Share
array:23 [ "pii" => "S2173572714000113" "issn" => "21735727" "doi" => "10.1016/j.medine.2012.09.009" "estado" => "S300" "fechaPublicacion" => "2014-03-01" "aid" => "520" "copyright" => "Elsevier España, S.L. and SEMICYUC" "copyrightAnyo" => "2012" "documento" => "article" "crossmark" => 0 "subdocumento" => "sco" "cita" => "Med Intensiva. 2014;38:111-21" "abierto" => array:3 [ "ES" => true "ES2" => true "LATM" => true ] "gratuito" => true "lecturas" => array:2 [ "total" => 6282 "formatos" => array:3 [ "EPUB" => 154 "HTML" => 4822 "PDF" => 1306 ] ] "Traduccion" => array:1 [ "es" => array:19 [ "pii" => "S0210569112003038" "issn" => "02105691" "doi" => "10.1016/j.medin.2012.09.007" "estado" => "S300" "fechaPublicacion" => "2014-03-01" "aid" => "520" "copyright" => "Elsevier España, S.L. y SEMICYUC" "documento" => "article" "crossmark" => 0 "subdocumento" => "sco" "cita" => "Med Intensiva. 2014;38:111-21" "abierto" => array:3 [ "ES" => true "ES2" => true "LATM" => true ] "gratuito" => true "lecturas" => array:2 [ "total" => 24594 "formatos" => array:3 [ "EPUB" => 233 "HTML" => 19259 "PDF" => 5102 ] ] "es" => array:13 [ "idiomaDefecto" => true "cabecera" => "<span class="elsevierStyleTextfn">Puesta al día en Medicina Intensiva: Ventilación mecánica en diferentes entidades</span>" "titulo" => "Ventilación mecánica no invasiva en la enfermedad pulmonar obstructiva crónica y en el edema agudo de pulmón cardiogénico" "tienePdf" => "es" "tieneTextoCompleto" => "es" "tieneResumen" => array:2 [ 0 => "es" 1 => "en" ] "paginas" => array:1 [ 0 => array:2 [ "paginaInicial" => "111" "paginaFinal" => "121" ] ] "titulosAlternativos" => array:1 [ "en" => array:1 [ "titulo" => "Noninvasive mechanical ventilation in chronic obstructive pulmonary disease and in acute cardiogenic pulmonary edema" ] ] "contieneResumen" => array:2 [ "es" => true "en" => true ] "contieneTextoCompleto" => array:1 [ "es" => true ] "contienePdf" => array:1 [ "es" => true ] "resumenGrafico" => array:2 [ "original" => 0 "multimedia" => array:7 [ "identificador" => "fig0005" "etiqueta" => "Figura 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 1598 "Ancho" => 2170 "Tamanyo" => 202021 ] ] "descripcion" => array:1 [ "es" => "<p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">Fisiopatología de la insuficiencia respiratoria aguda hipercápnica en la EPOC y los procesos que quedan bloqueados por la acción de la ventilación mecánica (representada en negro).</p> <p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">FR: frecuencia respiratoria; PEEPext: presión positiva al final de la espiración programada por el respirador; PEEPi: PEEP intrínseca; Tesp: tiempo espiratorio; VM: ventilación mecánica; VNPP: ventilación no invasiva con soporte inspiratorio.</p>" ] ] ] "autores" => array:1 [ 0 => array:2 [ "autoresLista" => "G. Rialp Cervera, A. del Castillo Blanco, O. Pérez Aizcorreta, L. Parra Morais" "autores" => array:5 [ 0 => array:2 [ "nombre" => "G." "apellidos" => "Rialp Cervera" ] 1 => array:2 [ "nombre" => "A." "apellidos" => "del Castillo Blanco" ] 2 => array:2 [ "nombre" => "O." "apellidos" => "Pérez Aizcorreta" ] 3 => array:2 [ "nombre" => "L." "apellidos" => "Parra Morais" ] 4 => array:1 [ "colaborador" => "por el GT-IRA de la SEMICYUC" ] ] ] ] ] "idiomaDefecto" => "es" "Traduccion" => array:1 [ "en" => array:9 [ "pii" => "S2173572714000113" "doi" => "10.1016/j.medine.2012.09.009" "estado" => "S300" "subdocumento" => "" "abierto" => array:3 [ "ES" => true "ES2" => true "LATM" => true ] "gratuito" => true "lecturas" => array:1 [ "total" => 0 ] "idiomaDefecto" => "en" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S2173572714000113?idApp=WMIE" ] ] "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S0210569112003038?idApp=WMIE" "url" => "/02105691/0000003800000002/v1_201402201019/S0210569112003038/v1_201402201019/es/main.assets" ] ] "itemAnterior" => array:19 [ "pii" => "S2173572714000125" "issn" => "21735727" "doi" => "10.1016/j.medine.2013.01.008" "estado" => "S300" "fechaPublicacion" => "2014-03-01" "aid" => "558" "copyright" => "Elsevier España, S.L. and SEMICYUC" "documento" => "article" "crossmark" => 0 "subdocumento" => "fla" "cita" => "Med Intensiva. 2014;38:73-82" "abierto" => array:3 [ "ES" => true "ES2" => true "LATM" => true ] "gratuito" => true "lecturas" => array:2 [ "total" => 2018 "formatos" => array:3 [ "EPUB" => 157 "HTML" => 1171 "PDF" => 690 ] ] "en" => array:12 [ "idiomaDefecto" => true "cabecera" => "<span class="elsevierStyleTextfn">Original</span>" "titulo" => "Oxidative stress in immunocompetent patients with severe community-acquired pneumonia. A pilot study" "tienePdf" => "en" "tieneTextoCompleto" => "en" "tieneResumen" => array:2 [ 0 => "en" 1 => "es" ] "paginas" => array:1 [ 0 => array:2 [ "paginaInicial" => "73" "paginaFinal" => "82" ] ] "titulosAlternativos" => array:1 [ "es" => array:1 [ "titulo" => "Estrés oxidativo en pacientes inmunocompetentes con neumonía comunitaria grave. Un estudio piloto" ] ] "contieneResumen" => array:2 [ "en" => true "es" => true ] "contieneTextoCompleto" => array:1 [ "en" => true ] "contienePdf" => array:1 [ "en" => true ] "autores" => array:1 [ 0 => array:2 [ "autoresLista" => "S. Trefler, A. Rodríguez, I. Martín-Loeches, V. Sanchez, J. Marín, M. Llauradó, M. Romeu, E. Díaz, R. Nogués, M. Giralt" "autores" => array:10 [ 0 => array:2 [ "nombre" => "S." "apellidos" => "Trefler" ] 1 => array:2 [ "nombre" => "A." "apellidos" => "Rodríguez" ] 2 => array:2 [ "nombre" => "I." "apellidos" => "Martín-Loeches" ] 3 => array:2 [ "nombre" => "V." "apellidos" => "Sanchez" ] 4 => array:2 [ "nombre" => "J." "apellidos" => "Marín" ] 5 => array:2 [ "nombre" => "M." "apellidos" => "Llauradó" ] 6 => array:2 [ "nombre" => "M." "apellidos" => "Romeu" ] 7 => array:2 [ "nombre" => "E." "apellidos" => "Díaz" ] 8 => array:2 [ "nombre" => "R." "apellidos" => "Nogués" ] 9 => array:2 [ "nombre" => "M." "apellidos" => "Giralt" ] ] ] ] ] "idiomaDefecto" => "en" "Traduccion" => array:1 [ "en" => array:9 [ "pii" => "S0210569113000077" "doi" => "10.1016/j.medin.2013.01.004" "estado" => "S300" "subdocumento" => "" "abierto" => array:3 [ "ES" => true "ES2" => true "LATM" => true ] "gratuito" => true "lecturas" => array:1 [ "total" => 0 ] "idiomaDefecto" => "en" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S0210569113000077?idApp=WMIE" ] ] "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S2173572714000125?idApp=WMIE" "url" => "/21735727/0000003800000002/v1_201404170156/S2173572714000125/v1_201404170156/en/main.assets" ] "en" => array:18 [ "idiomaDefecto" => true "cabecera" => "<span class="elsevierStyleTextfn">Update in intensive care medicine: MECHANICAL VENTILATION</span>" "titulo" => "Noninvasive mechanical ventilation in chronic obstructive pulmonary disease and in acute cardiogenic pulmonary edema" "tieneTextoCompleto" => true "paginas" => array:1 [ 0 => array:2 [ "paginaInicial" => "111" "paginaFinal" => "121" ] ] "autores" => array:1 [ 0 => array:4 [ "autoresLista" => "G. Rialp Cervera, A. del Castillo Blanco, O. Pérez Aizcorreta, L. Parra Morais" "autores" => array:5 [ 0 => array:4 [ "nombre" => "G." "apellidos" => "Rialp Cervera" "email" => array:1 [ 0 => "grialp@gmail.com" ] "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">¿</span>" "identificador" => "cor0005" ] ] ] 1 => array:2 [ "nombre" => "A." "apellidos" => "del Castillo Blanco" ] 2 => array:2 [ "nombre" => "O." "apellidos" => "Pérez Aizcorreta" ] 3 => array:2 [ "nombre" => "L." "apellidos" => "Parra Morais" ] 4 => array:1 [ "colaborador" => "on behalf of the GT-IRA of the SEMICYUC" ] ] "afiliaciones" => array:1 [ 0 => array:2 [ "entidad" => "Servicio de Medicina Intensiva, Hospital Son Llàtzer, Palma de Mallorca, Illes Balears, Spain" "identificador" => "aff0005" ] ] "correspondencia" => array:1 [ 0 => array:3 [ "identificador" => "cor0005" "etiqueta" => "⁎" "correspondencia" => "Corresponding author." ] ] ] ] "titulosAlternativos" => array:1 [ "es" => array:1 [ "titulo" => "Ventilación mecánica no invasiva en la enfermedad pulmonar obstructiva crónica y en el edema agudo de pulmón cardiogénico" ] ] "resumenGrafico" => array:2 [ "original" => 0 "multimedia" => array:7 [ "identificador" => "fig0005" "etiqueta" => "Figure 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 1598 "Ancho" => 2170 "Tamanyo" => 195380 ] ] "descripcion" => array:1 [ "en" => "<p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">Physiopathology of hypercapnic acute respiratory failure in COPD and the processes that are blocked by the action of mechanical ventilation (represented in black). RF, respiratory frequency; PEEPext, positive end-expiratory pressure programmed by the ventilator; PEEPi, intrinsic PEEP; Texp, expiratory time; MV, mechanical ventilation; NIPPV, noninvasive positive pressure ventilation.</p>" ] ] ] "textoCompleto" => "<span class="elsevierStyleSections"><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0025">Introduction</span><p id="par0005" class="elsevierStylePara elsevierViewall">Since its introduction in the 1980s, the use of noninvasive ventilation (NIV) in patients with acute respiratory failure (ARF) has gradually increased as an alternative to endotracheal intubation in the Intensive Care Unit (ICU).<a class="elsevierStyleCrossRefs" href="#bib0005"><span class="elsevierStyleSup">1–3</span></a> According to some reports, the use of NIV has actually doubled over a period of 7 years.<a class="elsevierStyleCrossRefs" href="#bib0005"><span class="elsevierStyleSup">1,3</span></a> NIV is employed in 11–23% of all the ventilated patients,<a class="elsevierStyleCrossRefs" href="#bib0005"><span class="elsevierStyleSup">1,3,4</span></a> which means an 8–13% utilization rate among all patients admitted to the ICU.<a class="elsevierStyleCrossRefs" href="#bib0005"><span class="elsevierStyleSup">1,3,4</span></a></p><p id="par0010" class="elsevierStylePara elsevierViewall">Noninvasive ventilation is regarded as the first choice management along with conventional treatment in hypercapnic ARF in the context of chronic obstructive pulmonary disease (COPD) and in ARF related to acute cardiogenic pulmonary edema (ACPE) or immune depression, in the absence of contraindications. It is important to underscore that NIV failure potentially may be associated with prolonged invasive mechanical ventilation<a class="elsevierStyleCrossRef" href="#bib0025"><span class="elsevierStyleSup">5</span></a> and an increased mortality rate. In this context, mortality rates of over 45% have been reported in non-selected patient populations.<a class="elsevierStyleCrossRef" href="#bib0005"><span class="elsevierStyleSup">1</span></a> Correct patient selection for the use of NIV is essential, since use of the technique is not intended to delay endotracheal intubation but to avoid it.</p><p id="par0015" class="elsevierStylePara elsevierViewall">The present review focuses on the application of NIV in two very prevalent types of ARF in our setting, and in which NIV has shown clear benefits, i.e., in patients with COPD and patients with ACPE.</p><p id="par0020" class="elsevierStylePara elsevierViewall">The present review uses the term NIV in reference to any type of noninvasive ventilatory assistance, whether inspiratory, expiratory or both, and including continuous positive airway pressure (CPAP) for the application of positive end-expiratory pressure (PEEP) in a noninvasive manner (using a mask with its own CPAP system or connected to MV) and noninvasive positive pressure ventilation (NIPPV) for the application of NIV with inspiratory support (pressure support, proportional assist ventilation (PAV), BiPAP, PS S/T, etc.) with or without PEEP.</p></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0030">Use of noninvasive ventilation in patients with chronic obstructive pulmonary disease</span><span id="sec0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0035">Epidemiology</span><p id="par0025" class="elsevierStylePara elsevierViewall">Chronic obstructive pulmonary disease is associated with important morbidity–mortality and affects up to 10% of the Spanish population according to the EPI-SCAN study.<a class="elsevierStyleCrossRef" href="#bib0030"><span class="elsevierStyleSup">6</span></a> The exacerbation of COPD is the cause of 20% of all emergency care consultations, and it is estimated that about 25% of the affected patients present acidosis upon arrival. Management of the exacerbations is based on drug treatment and ventilatory support. Evidence of the benefits of NIV in hypercapnic ARF among patients with COPD has been widely documented in the scientific literature, and the technique is warranted both by a high degree of recommendation in the different clinical guides<a class="elsevierStyleCrossRef" href="#bib0035"><span class="elsevierStyleSup">7</span></a> and by the progressive increase in its use by specialists in recent years. A registry of hospitals in the United States during the period 1998–2008 referred to the use of MV in patients with COPD exacerbation revealed a progressive 462% increase in the use of NIV over the years (from 1% to 4.5% of all admissions), together with a 42% decrease in the use of invasive MV (from 6% to 3.5% of all admissions).<a class="elsevierStyleCrossRef" href="#bib0040"><span class="elsevierStyleSup">8</span></a> In Europe, during the year 2008 a study on the use of NIV found the management of hypercapnic ARF to be the main indication of the technique (48% of the cases).<a class="elsevierStyleCrossRef" href="#bib0045"><span class="elsevierStyleSup">9</span></a></p></span><span id="sec0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0040">Physiopathological effects</span><p id="par0030" class="elsevierStylePara elsevierViewall">Chronic obstructive pulmonary disease exacerbation is characterized by an increase in mechanical loading due to the high airflow resistances and dynamic hyperinsufflation which initially give rise to an increase in respiratory effort and intrinsic PEEP. In later stages the condition evolves toward muscle fatigue and consequent clinical and blood gas deterioration. Dynamic hyperinsufflation occurs because of an expiratory time that is too short to reach the resting volume of the respiratory system, and increases with each successive respiration. Under these circumstances, NIPPV has beneficial effects, which will be summarized below and are represented in <a class="elsevierStyleCrossRef" href="#fig0005">Fig. 1</a>. On one hand, application of a positive inspiratory pressure reduces respiratory labor with an increase in alveolar ventilation and a lowering of the respiratory frequency–this in turn produces a prolongation of the expiratory time with lesser air trapping. In relation to gas exchange, and due to the increase in minute volume, we observe a lowering of PaCO<span class="elsevierStyleInf">2</span> and an increase in pH. On the other hand, the application of external PEEP counters the inspiratory effort needed to surpass the intrinsic PEEP due to the dynamic hyperinsufflation and which can originate up to 60% of the increase in respiratory effort–thereby reducing muscle work. <a class="elsevierStyleCrossRef" href="#fig0010">Fig. 2</a> proposes an interventional algorithm for patients presenting COPD with hypercapnic ARF.</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia><elsevierMultimedia ident="fig0010"></elsevierMultimedia></span><span id="sec0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0045">Clinical effects</span><p id="par0035" class="elsevierStylePara elsevierViewall">Hypercapnic ARF in patients with COPD is the main indication of NIPPV–the first studies having been published over two decades ago.<a class="elsevierStyleCrossRef" href="#bib0050"><span class="elsevierStyleSup">10</span></a></p><p id="par0040" class="elsevierStylePara elsevierViewall">Brochard et al.<a class="elsevierStyleCrossRef" href="#bib0050"><span class="elsevierStyleSup">10</span></a> evaluated the physiological benefits of NIPPV in patients with exacerbated COPD and observed significant improvement of dyspnea, respiratory frequency and gas exchange, with favorable changes in pH, PaCO<span class="elsevierStyleInf">2</span> and PaO<span class="elsevierStyleInf">2</span>. After comparing the results with an oxygen therapy control group, the use of NIPPV was seen to be associated with a lesser need for intubation (7% vs 77%, <span class="elsevierStyleItalic">p</span><span class="elsevierStyleHsp" style=""></span><<span class="elsevierStyleHsp" style=""></span>0.001) and a shorter stay in the ICU (7 vs 19<span class="elsevierStyleHsp" style=""></span>days, <span class="elsevierStyleItalic">p</span><span class="elsevierStyleHsp" style=""></span><<span class="elsevierStyleHsp" style=""></span>0.01).</p><p id="par0045" class="elsevierStylePara elsevierViewall">Posteriorly, the same group conducted a randomized study of 85 patients with exacerbated COPD,<a class="elsevierStyleCrossRef" href="#bib0055"><span class="elsevierStyleSup">11</span></a> comparing the use of NIPPV with conventional oxygen therapy. The NIPPV group showed significant improvement in blood gases (pH, PaCO<span class="elsevierStyleInf">2</span> and PaO<span class="elsevierStyleInf">2</span>) and respiratory frequency, together with a significant decrease in the need for intubation (26% vs 74%, <span class="elsevierStyleItalic">p</span><span class="elsevierStyleHsp" style=""></span>=<span class="elsevierStyleHsp" style=""></span>0.001), the presence of complications, hospital stay (23 vs 35<span class="elsevierStyleHsp" style=""></span>days, <span class="elsevierStyleItalic">p</span><span class="elsevierStyleHsp" style=""></span>=<span class="elsevierStyleHsp" style=""></span>0.02) and hospital mortality (9% vs 29%, <span class="elsevierStyleItalic">p</span><span class="elsevierStyleHsp" style=""></span>=<span class="elsevierStyleHsp" style=""></span>0.02).</p><p id="par0050" class="elsevierStylePara elsevierViewall">Since then, many studies have confirmed the benefits of NIPPV in patients with COPD and hypercapnic ARF in terms of a lesser need for intubation, diminished hospital mortality and a shortened hospital stay.<a class="elsevierStyleCrossRef" href="#bib0060"><span class="elsevierStyleSup">12</span></a> Different metaanalyses have examined these results, revealing significant decreases in the need for intubation (18–28%) and in hospital mortality (10–13%),<a class="elsevierStyleCrossRefs" href="#bib0065"><span class="elsevierStyleSup">13,14</span></a> together with a significant shortening of hospital stay (2–5<span class="elsevierStyleHsp" style=""></span>days)<a class="elsevierStyleCrossRefs" href="#bib0070"><span class="elsevierStyleSup">14–17</span></a> (<a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a>).</p><elsevierMultimedia ident="tbl0005"></elsevierMultimedia><p id="par0055" class="elsevierStylePara elsevierViewall">Most of the patients included in the abovementioned studies had respiratory acidosis. On considering the studies that included patients with less severe exacerbations (initial pH<span class="elsevierStyleHsp" style=""></span>><span class="elsevierStyleHsp" style=""></span>7.30), NIPPV did not show advantages with respect to conventional oxygen therapy,<a class="elsevierStyleCrossRefs" href="#bib0090"><span class="elsevierStyleSup">18,19</span></a> as has been confirmed in a metaanalysis<a class="elsevierStyleCrossRef" href="#bib0065"><span class="elsevierStyleSup">13</span></a> on evaluating the subgroup of patients with pH<span class="elsevierStyleHsp" style=""></span>><span class="elsevierStyleHsp" style=""></span>7.30. In contrast, another metaanalysis that did not include the study of Keenan et al.<a class="elsevierStyleCrossRef" href="#bib0090"><span class="elsevierStyleSup">18</span></a> detected a significant reduction in the percentage of intubations and in mortality in this subgroup of patients<a class="elsevierStyleCrossRef" href="#bib0075"><span class="elsevierStyleSup">15</span></a> (<a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a>).</p><p id="par0060" class="elsevierStylePara elsevierViewall">In sum, the application of NIPPV together with regular medical treatment in patients with COPD and hypercapnic ARF reduces the incidence of orotracheal intubation, hospital mortality and hospital stay.</p></span><span id="sec0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0050">Postextubation noninvasive ventilation</span><p id="par0065" class="elsevierStylePara elsevierViewall">Invasive mechanical ventilation for over three days in patients with COPD is associated with complications such as muscle atrophy and an increased risk of nosocomial pneumonia. It therefore seems prudent to design strategies to shorten the duration of MV. On the contrary, nosocomial pneumonia is associated with increased patient mortality. NIPPV could be used as ventilatory support after invasive MV in three contexts: to facilitate weaning from invasive MV, to prevent postextubation ARF, or for the management of postextubation ARF.</p><span id="sec0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0055">Noninvasive ventilation to facilitate weaning from invasive mechanical ventilation</span><p id="par0070" class="elsevierStylePara elsevierViewall">Nava et al.<a class="elsevierStyleCrossRef" href="#bib0100"><span class="elsevierStyleSup">20</span></a> evaluated the impact of NIPPV in patients with COPD exacerbation requiring invasive MV for at least 36–48<span class="elsevierStyleHsp" style=""></span>h and who failed the spontaneous breathing test. The patients were randomized to two groups: the usual weaning process was continued in one group, while in the other group the patients were extubated and NIPPV was immediately applied. The group that received NIPPV showed a lesser incidence of pneumonia, a shorter stay in the ICU (15 vs 24<span class="elsevierStyleHsp" style=""></span>days, <span class="elsevierStyleItalic">p</span><span class="elsevierStyleHsp" style=""></span>=<span class="elsevierStyleHsp" style=""></span>0.02), and increased survival after 90 days (92% vs 72%, <span class="elsevierStyleItalic">p</span><span class="elsevierStyleHsp" style=""></span><<span class="elsevierStyleHsp" style=""></span>0.01).</p><p id="par0075" class="elsevierStylePara elsevierViewall">Another study involving a more heterogeneous patient population (58% with COPD) with MV weaning test failure during three consecutive days compared extubation and the application of NIPPV vs conventional weaning.<a class="elsevierStyleCrossRef" href="#bib0105"><span class="elsevierStyleSup">21</span></a> The group treated with NIPPV showed a lesser incidence of nosocomial pneumonia and a lesser need for tracheostomy, as well as a shorter stay both in the ICU and in hospital, and superior survival in the ICU and after 90 days.</p><p id="par0080" class="elsevierStylePara elsevierViewall">The recently published VENISE study<a class="elsevierStyleCrossRef" href="#bib0110"><span class="elsevierStyleSup">22</span></a> included 208 patients with hypercapnic ARF (69% with COPD) in which a first weaning test had failed. The patients were randomized to three treatment groups: a first group underwent conventional weaning (based on daily weaning tests or progressive reduction of pressure support); a second group was extubated followed by conventional oxygen therapy; and a third group was extubated and connected to NIPPV. No significant inter-group differences were observed in the percentage of reintubations after 7 days (30%, 37% and 32%, respectively). It should be noted that the use of NIPPV as rescue technique was allowed, with rescue therapy success rates of 45% in the conventional weaning group and 58% in the oxygen therapy group. However, a significant decrease was recorded in the risk of postextubation ARF in the NIPPV group (54%, 71% and 33%, respectively, <span class="elsevierStyleItalic">p</span><span class="elsevierStyleHsp" style=""></span><<span class="elsevierStyleHsp" style=""></span>0.001). The fact that a group was subjected to extubation after MV weaning test failure, followed by oxygen therapy without adherence to any weaning protocol, has been criticized from the ethical perspective.</p></span><span id="sec0040" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0060">Noninvasive ventilation in the prevention of postextubation acute respiratory failure</span><p id="par0085" class="elsevierStylePara elsevierViewall">Noninvasive positive pressure ventilation applied immediately after protocolized extubation could reduce the risk of postextubation ARF and avoid the need for reintubation–the latter being an independent risk factor for nosocomial pneumonia and mortality.</p><p id="par0090" class="elsevierStylePara elsevierViewall">The different studies made to assess the efficacy of NIPPV in preventing postextubation ARF have obtained disparate results,<a class="elsevierStyleCrossRefs" href="#bib0115"><span class="elsevierStyleSup">23–25</span></a> with the observation of possible benefits in highly selected patients with a high risk of developing postextubation ARF (<a class="elsevierStyleCrossRef" href="#tbl0010">Table 2</a>). In this sense, Nava et al.,<a class="elsevierStyleCrossRef" href="#bib0120"><span class="elsevierStyleSup">24</span></a> in patients with reintubation risk, of which 32% had COPD, reported that the use of NIPPV immediately after extubation compared with conventional management is associated with a lesser percentage of reintubations, and results in a 10% reduction of the risk of death in the ICU. In this same line, Ferrer et al.,<a class="elsevierStyleCrossRef" href="#bib0125"><span class="elsevierStyleSup">25</span></a> in patients at a high risk of developing postextubation ARF, of which 51% had COPD, reported a significant decrease in postextubation ARF in the group treated with NIPPV (16% vs 33%, <span class="elsevierStyleItalic">p</span><span class="elsevierStyleHsp" style=""></span>=<span class="elsevierStyleHsp" style=""></span>0.029), together with a decrease in mortality in the ICU (2% vs 12%, <span class="elsevierStyleItalic">p</span><span class="elsevierStyleHsp" style=""></span>=<span class="elsevierStyleHsp" style=""></span>0.015) that did not persist after 90 days. In this same study, a sub-analysis comparing patients with and without hypercapnia during the spontaneous breathing test found the application of NIPPV to reduce mortality both in the ICU and after 90 days in the patients with hypercapnia. For this reason, these investigators, in a more recent study involving 106 intubated patients with chronic respiratory diseases (62% with COPD) and hypercapnic ARF in the MV weaning phase and a well-tolerated weaning test, compared treatment with postextubation NIPPV vs conventional oxygen therapy.<a class="elsevierStyleCrossRef" href="#bib0130"><span class="elsevierStyleSup">26</span></a> Here again, the group receiving NIPPV showed a lesser incidence of postextubation ARF (15% vs 48%, <span class="elsevierStyleItalic">p</span><span class="elsevierStyleHsp" style=""></span><<span class="elsevierStyleHsp" style=""></span>0.0001) and a decrease in mortality after 90 days (<span class="elsevierStyleItalic">p</span><span class="elsevierStyleHsp" style=""></span>=<span class="elsevierStyleHsp" style=""></span>0.015).</p><elsevierMultimedia ident="tbl0010"></elsevierMultimedia></span><span id="sec0045" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0065">Noninvasive ventilation in the treatment of postextubation acute respiratory failure</span><p id="par0095" class="elsevierStylePara elsevierViewall">The studies made on the use of NIPPV in the management of postextubation ARF offer disappointing results,<a class="elsevierStyleCrossRefs" href="#bib0135"><span class="elsevierStyleSup">27,28</span></a> observing even increased mortality in relation to the use of NIPPV.<a class="elsevierStyleCrossRef" href="#bib0135"><span class="elsevierStyleSup">27</span></a> Nevertheless, mention should be made of the low percentage of patients with COPD included in both studies (about 10%)–a fact that could warrant the conduction of new studies in this subgroup of patients.</p></span></span><span id="sec0050" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0070">Ventilation modes</span><p id="par0100" class="elsevierStylePara elsevierViewall">The pressure support mode has commonly been used in NIV applied to hypercapnic ARF in COPD patients. Since a constant level of inspiratory support is provided, a decrease is observed in the variability of the respiratory pattern, and this in turn may be associated with asynchronies and overdistension. More recent modes have been introduced that use a more physiological inspiratory support system in order to improve synchronization between the patient and the ventilator. One of these modes is proportional assist ventilation (PAV), in which inspiratory support proportional to the inspiratory flow is provided. The degree of support is programmed according to the resistance of the airway and compliance. However, although this mode is interesting, it has not yet been able to demonstrate advantages with respect to pressure support.<a class="elsevierStyleCrossRef" href="#bib0145"><span class="elsevierStyleSup">29</span></a> Another recently introduced ventilation mode is the neurally adjusted ventilatory assist mode (NAVA), which is based on the detection of diaphragm contraction through esophageal electrodes. NIV with this mode appears to reduce the severe asynchronies observed with pressure support, while affording similar results in terms of gas exchange.<a class="elsevierStyleCrossRef" href="#bib0150"><span class="elsevierStyleSup">30</span></a></p></span><span id="sec0055" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0075">Predictors of noninvasive ventilation success and failure</span><p id="par0105" class="elsevierStylePara elsevierViewall">The percentage of failure of NIPPV in patients with COPD and hypercapnic ARF that finally need endotracheal intubation is less than 25%.<a class="elsevierStyleCrossRefs" href="#bib0055"><span class="elsevierStyleSup">11,12,31,32</span></a> The parameters associated with success and failure of the technique are summarized in <a class="elsevierStyleCrossRef" href="#tbl0015">Table 3</a>. An adequate level of patient consciousness at the start of NIPPV, and the improvement of pH, PaCO<span class="elsevierStyleInf">2</span> and level of consciousness after one hour of NIPPV are related to a good response to NIPPV in hypercapnic ARF in patients with COPD.<a class="elsevierStyleCrossRef" href="#bib0160"><span class="elsevierStyleSup">32</span></a> In patients in whom NIV fails, a recent observational study indicates that the range of time on NIV prior to intubation is very wide and that an increase in the duration of NIV prior to intubation is associated with a decrease in hospital survival–though only in the group of patients without previous cardiac or respiratory disease<a class="elsevierStyleCrossRef" href="#bib0165"><span class="elsevierStyleSup">33</span></a>–hence the importance of the time window for evaluating the success or failure of the technique, with a view to avoiding delays in intubation that could worsen the prognosis.</p><elsevierMultimedia ident="tbl0015"></elsevierMultimedia><p id="par0110" class="elsevierStylePara elsevierViewall">On the other hand, earliness in the introduction of NIPPV is fundamental for the success of the technique. Patient extenuation, which is associated with intense respiratory acidosis and possible encephalopathy, is to be avoided since these conditions are characterized by a high failure risk. Likewise, the presence of pneumonia or acute respiratory distress syndrome (ARDS) is also associated with failure of the technique.<a class="elsevierStyleCrossRef" href="#bib0170"><span class="elsevierStyleSup">34</span></a></p><p id="par0115" class="elsevierStylePara elsevierViewall">Poor tolerance of the technique is associated with NIPPV failure–asynchrony being one of the most relevant factors in this sense. Asynchrony is defined by the presence of an ineffective trigger, double trigger, auto-trigger, premature cycling or late cycling, and is present in up to 43% of all patients–the level of pressure support and the magnitude of leakage being the main factors responsible for severe asynchronies.<a class="elsevierStyleCrossRef" href="#bib0175"><span class="elsevierStyleSup">35</span></a></p><p id="par0120" class="elsevierStylePara elsevierViewall">The type of mask used also plays an important role in defining patient tolerance of the technique. The current main interfaces comprise nasal, oronasal, facial or helmet masks. In this context, oronasal masks are the preferred option in the presence of ARF for both patients and specialists.<a class="elsevierStyleCrossRef" href="#bib0045"><span class="elsevierStyleSup">9</span></a><a class="elsevierStyleCrossRef" href="#tbl0020">Table 4</a> describes the main advantages and inconveniences of the different interfaces.</p><elsevierMultimedia ident="tbl0020"></elsevierMultimedia><p id="par0125" class="elsevierStylePara elsevierViewall">Although most studies on NIPPV have been carried out in ICUs, the use of the technique has spread in recent years to Emergency Care Departments and Pneumology wards, with equally satisfactory results.<a class="elsevierStyleCrossRef" href="#bib0075"><span class="elsevierStyleSup">15</span></a> In a European registry published in 2008,<a class="elsevierStyleCrossRef" href="#bib0045"><span class="elsevierStyleSup">9</span></a> the use of NIPPV was found to be more widespread among pneumologists than among intensivists or anesthetists. In patients with NIV failure risk (<a class="elsevierStyleCrossRef" href="#tbl0015">Table 3</a>), the technique should be used in units that have expert professionals and are able to react quickly in the event of failure of the technique.<a class="elsevierStyleCrossRefs" href="#bib0155"><span class="elsevierStyleSup">31,36</span></a> These requirements are met by Intensive or Semicritical Care Units. When NIPPV is started outside this setting and gas exchange, respiratory frequency or dyspnea fails to improve; the degree of encephalopathy worsens; or hemodynamic deterioration is moreover observed, then transfer of these patients to such units should be considered.</p></span></span><span id="sec0060" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0080">Use of noninvasive ventilation in patients with acute cardiogenic pulmonary edema</span><span id="sec0065" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0085">Epidemiology</span><p id="par0130" class="elsevierStylePara elsevierViewall">Heart failure affects 2–3% of the population, and its prevalence progressively increases with age–reaching 10–20% among patients between 70 and 80 years of age. The mean age of patients with heart failure in the industrialized world is 75 years. The disease is the cause of 5% of all emergency hospital admissions and occupies 10% of the global hospital beds.<a class="elsevierStyleCrossRef" href="#bib0185"><span class="elsevierStyleSup">37</span></a> On the other hand, NIV is used in 80% of the episodes of acute cardiogenic pulmonary edema (ACPE).<a class="elsevierStyleCrossRef" href="#bib0155"><span class="elsevierStyleSup">31</span></a></p></span><span id="sec0070" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0090">Physiological effects of noninvasive ventilation</span><p id="par0135" class="elsevierStylePara elsevierViewall">Acute cardiogenic pulmonary edema is characterized by an increase in left ventricle filling pressures that retrogradely generate a rise in pulmonary capillary pressure, followed by fluid extravasation toward the pulmonary interstitial compartment and alveolar spaces. All these in turn produce an increase in airway resistances, a decrease in lung diffusion capacity, a drop in functional residual capacity, and an increased intrapulmonary shunt effect. The result is the development of hypoxemia with an increase in respiratory effort.</p><p id="par0140" class="elsevierStylePara elsevierViewall">The application of intrathoracic positive pressure in patients with lung edema, particularly with PEEP, whether with or without inspiratory support, on one hand produces a decrease in venous return and in right ventricle preload, and on the other reduces left ventricle postload secondary to a decrease in transmural pressure (<span class="elsevierStyleItalic">transmural pressure</span><span class="elsevierStyleHsp" style=""></span>=<span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleItalic">intraventricular pressure</span><span class="elsevierStyleHsp" style=""></span>−<span class="elsevierStyleHsp" style=""></span><span class="elsevierStyleItalic">intrathoracic pressure</span>), thereby improving cardiac output and myocardial contractility. Furthermore, in these patients, the application of positive pressure favors alveolar recruitment and increases functional residual capacity, lung compliance and alveolar ventilation, with a reduction of the intrapulmonary shunt and respiratory effort, and improved oxygenation (<a class="elsevierStyleCrossRef" href="#tbl0025">Table 5</a>).</p><elsevierMultimedia ident="tbl0025"></elsevierMultimedia><p id="par0145" class="elsevierStylePara elsevierViewall">Separate mention is required of situations of cardiogenic shock or right ventricular failure, in which the application of NIV may prove deleterious.<a class="elsevierStyleCrossRef" href="#bib0185"><span class="elsevierStyleSup">37</span></a></p></span><span id="sec0075" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0095">Clinical effects</span><p id="par0150" class="elsevierStylePara elsevierViewall">Faster clinical (reduction of respiratory frequency and of dyspneic sensation) and blood gas improvements (increased PaO<span class="elsevierStyleInf">2</span>, reduction of PaCO<span class="elsevierStyleInf">2</span> and of acidosis) have been observed with the application of NIV compared with conventional oxygen therapy,<a class="elsevierStyleCrossRef" href="#bib0190"><span class="elsevierStyleSup">38</span></a> with both CPAP<a class="elsevierStyleCrossRefs" href="#bib0195"><span class="elsevierStyleSup">39,40</span></a> and NIPPV<a class="elsevierStyleCrossRefs" href="#bib0205"><span class="elsevierStyleSup">41,42</span></a>–the differences being manifest from 30<span class="elsevierStyleHsp" style=""></span>min of application of the technique.</p><p id="par0155" class="elsevierStylePara elsevierViewall">Both NIPPV and CPAP show rapid response times (from 30<span class="elsevierStyleHsp" style=""></span>min)<a class="elsevierStyleCrossRef" href="#bib0215"><span class="elsevierStyleSup">43</span></a>–clinical resolution generally being faster with the application of NIPPV,<a class="elsevierStyleCrossRefs" href="#bib0220"><span class="elsevierStyleSup">44,45</span></a> reaching differences of almost one hour between the two techniques.<a class="elsevierStyleCrossRef" href="#bib0220"><span class="elsevierStyleSup">44</span></a> Likewise, studies with a physiological basis have shown that although the use of CPAP is associated with a decrease in respiratory effort among patients with ACPE, this effect is greater when NIPPV is applied.<a class="elsevierStyleCrossRef" href="#bib0230"><span class="elsevierStyleSup">46</span></a></p><p id="par0160" class="elsevierStylePara elsevierViewall">Other studies report that NIV in ACPE may be especially beneficial for patients with hypercapnia, by reducing the percentage of intubations with respect to non-hypercapnic individuals.<a class="elsevierStyleCrossRefs" href="#bib0205"><span class="elsevierStyleSup">41,47</span></a> However, in the study published by Nava et al.,<a class="elsevierStyleCrossRef" href="#bib0205"><span class="elsevierStyleSup">41</span></a> 72% of the subgroup of hypercapnic patients consisted of individuals who moreover had COPD, while in the non-hypercapnic subgroup these individuals represented only 11%. This suggests that it is probably the underlying disease, not hypercapnia alone, that constitutes the marker of success. Nouira et al.<a class="elsevierStyleCrossRef" href="#bib0220"><span class="elsevierStyleSup">44</span></a> conducted a sub-analysis of the patients with hypercapnia. In these subjects the authors compared CPAP vs NIPPV, and no differences in patient course were seen between the two techniques.</p></span><span id="sec0080" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0100">Effects on hospital stay</span><p id="par0165" class="elsevierStylePara elsevierViewall">The mean duration of NIV in ACPE is between 2 and 4<span class="elsevierStyleHsp" style=""></span>h.<a class="elsevierStyleCrossRef" href="#bib0240"><span class="elsevierStyleSup">48</span></a> Hospital stay is not modified by the use of NIV vs conventional treatment, and is reported to be 8–14 days.<a class="elsevierStyleCrossRefs" href="#bib0190"><span class="elsevierStyleSup">38,39,41,42,48</span></a></p></span><span id="sec0085" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0105">Effects on the need for endotracheal intubation</span><p id="par0170" class="elsevierStylePara elsevierViewall">The percentage of endotracheal intubation in patients with ACPE subjected to conventional oxygen therapy is 10–28%, depending on the series. However, when using NIV, this percentage drops to 3–12%, with both CPAP and NIPPV.<a class="elsevierStyleCrossRef" href="#bib0245"><span class="elsevierStyleSup">49</span></a></p><p id="par0175" class="elsevierStylePara elsevierViewall">The largest study to date on the effects of NIV in ACPE was published by Gray et al. in 2008.<a class="elsevierStyleCrossRef" href="#bib0190"><span class="elsevierStyleSup">38</span></a> This study randomized 1069 patients to three treatment groups: CPAP, NIPPV and a control group administered conventional oxygen therapy. The authors observed faster improvement of dyspneic sensation and of pH with the use of CPAP or NIPPV in comparison with conventional oxygen therapy, with no significant differences in mortality or in the need for intubation between the groups. Likewise, no differences were recorded in hospital stay or in the incidence of myocardial infarction. It must be noted that this study excluded the more seriously ill patients (which are the subjects who possibly could derive greater benefit from the technique), with a global percentage of intubations of under 3%, and that moreover 15% of the patients in the conventional oxygen therapy group were rescued with NIV.</p><p id="par0180" class="elsevierStylePara elsevierViewall">Most randomized studies report a clear tendency toward a lesser need for intubation with NIV.<a class="elsevierStyleCrossRefs" href="#bib0200"><span class="elsevierStyleSup">40,48,50,51</span></a> The different metaanalyses<a class="elsevierStyleCrossRefs" href="#bib0245"><span class="elsevierStyleSup">49,52–57</span></a> coincide in reporting a significant decrease in the percentage of intubations with the application of NIV, in comparison with conventional oxygen therapy (as can be seen in <a class="elsevierStyleCrossRef" href="#tbl0030">Table 6</a>), on considering both CPAP and NIPPV–with calculation of an absolute reduction of the need for intubation of 22% and 18%, respectively.<a class="elsevierStyleCrossRef" href="#bib0270"><span class="elsevierStyleSup">54</span></a></p><elsevierMultimedia ident="tbl0030"></elsevierMultimedia><p id="par0185" class="elsevierStylePara elsevierViewall">On separately analyzing the effect of the application of NIPPV or CPAP vs conventional oxygen therapy, both techniques have demonstrated their efficacy in reducing the need for intubation, particularly when CPAP is used. The global studies published to date have been unable to demonstrate the superiority of one technique over the other (<a class="elsevierStyleCrossRef" href="#tbl0030">Table 6</a>), and in this sense similar intubation percentages are seen with the use of both CPAP and NIPPV in application to ACPE.</p></span><span id="sec0090" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0110">Effects on hospital mortality</span><p id="par0190" class="elsevierStylePara elsevierViewall">There is controversy regarding the impact of NIV upon hospital mortality in patients with ACPE. Although most randomized studies report a tendency toward lesser mortality in the groups treated with NIV, they have been unable to demonstrate significant reductions in patient mortality,<a class="elsevierStyleCrossRefs" href="#bib0190"><span class="elsevierStyleSup">38,48,51,58</span></a> probably because of the limited statistical power involved. The mortality rate among the patients receiving conventional oxygen therapy is about 16%, vs 10% in those who receive NIV.<a class="elsevierStyleCrossRef" href="#bib0245"><span class="elsevierStyleSup">49</span></a></p><p id="par0195" class="elsevierStylePara elsevierViewall">The effect of NIV upon hospital mortality has been reflected in different metaanalyses comparing the technique with conventional oxygen therapy.<a class="elsevierStyleCrossRefs" href="#bib0245"><span class="elsevierStyleSup">49,52–57</span></a> Although these analyses are based on studies with a limited number of patients and with variable methodological designs, they agree that the use of NIV is associated with a significant decrease in hospital mortality (<a class="elsevierStyleCrossRef" href="#tbl0030">Table 6</a>).</p><p id="par0200" class="elsevierStylePara elsevierViewall">On separately analyzing the two ventilation modes, the application of CPAP is seen to maintain a significant reduction in mortality compared with conventional treatment, with an absolute reduction of 13%,<a class="elsevierStyleCrossRef" href="#bib0270"><span class="elsevierStyleSup">54</span></a> while the application of NIPPV only reveals a tendency toward decreased mortality (absolute reduction 7%).<a class="elsevierStyleCrossRef" href="#bib0270"><span class="elsevierStyleSup">54</span></a> Nevertheless, no significant differences are observed on comparing the two techniques (<a class="elsevierStyleCrossRef" href="#tbl0030">Table 6</a>).</p></span><span id="sec0095" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0115">Use of noninvasive ventilation in acute coronary syndrome</span><p id="par0205" class="elsevierStylePara elsevierViewall">The concern about acute myocardial infarction (AMI) during the application of NIV is mainly attributable to a randomized study involving patients with ACPE in which a comparison was made of NIPPV vs CPAP–a tendency toward more frequent AMI being observed in the group of patients treated with NIPPV. However, this study only included a total of 27 patients, and the NIPPV treatment group had a greater proportion of patients with chest pain and left bundle block at the start of the study.<a class="elsevierStyleCrossRef" href="#bib0225"><span class="elsevierStyleSup">45</span></a> Posteriorly, numerous randomized studies have been unable to confirm these results,<a class="elsevierStyleCrossRefs" href="#bib0205"><span class="elsevierStyleSup">41,43,44,48,58,59</span></a> though it is true that most of them excluded patients with acute coronary syndrome (ACS) as a cause of ACPE<a class="elsevierStyleCrossRefs" href="#bib0215"><span class="elsevierStyleSup">43,44,59</span></a>–particularly those patients amenable to immediate revascularization.<a class="elsevierStyleCrossRefs" href="#bib0205"><span class="elsevierStyleSup">41,48,58</span></a></p><p id="par0210" class="elsevierStylePara elsevierViewall">The different metaanalyses likewise have not detected a relationship between AMI and the use of NIV in patients with ACPE<a class="elsevierStyleCrossRefs" href="#bib0245"><span class="elsevierStyleSup">49,53–55,57</span></a> either on comparing NIV with conventional oxygen therapy or on comparing the two NIV techniques with each other, both during treatment with NIV<a class="elsevierStyleCrossRefs" href="#bib0245"><span class="elsevierStyleSup">49,53,54,57</span></a> and after its application<a class="elsevierStyleCrossRef" href="#bib0285"><span class="elsevierStyleSup">57</span></a> (<a class="elsevierStyleCrossRef" href="#tbl0030">Table 6</a>).</p><p id="par0215" class="elsevierStylePara elsevierViewall">On the basis of the existing results, the recommendation is to use NIV in ACPE in the absence of shock or ACS amenable to urgent revascularization, and making no distinction between CPAP and NIPPV.<a class="elsevierStyleCrossRef" href="#bib0035"><span class="elsevierStyleSup">7</span></a></p></span><span id="sec0100" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0120">Use of noninvasive ventilation in the pre-hospital setting</span><p id="par0220" class="elsevierStylePara elsevierViewall">Treatment in ACPE must be provided on an early basis. This therefore also applies to NIV, which has been shown to be cost-effective provided it is introduced early. In the pre-hospital setting, a randomized study of 71 patients with ARF (67% of whom had ACPE) compared the use of conventional oxygen therapy vs CPAP (10<span class="elsevierStyleHsp" style=""></span>cmH<span class="elsevierStyleInf">2</span>O). A significant reduction was observed in the percentage of intubations and in patient mortality in the group treated with CPAP.<a class="elsevierStyleCrossRef" href="#bib0300"><span class="elsevierStyleSup">60</span></a> In another study in the pre-hospital setting involving 124 patients with ACPE, a comparison was made of the effects of the immediate application of CPAP during the first 15<span class="elsevierStyleHsp" style=""></span>min, followed by the addition of conventional treatment (oxygen and medication), vs the immediate provision of conventional treatment followed 15<span class="elsevierStyleHsp" style=""></span>min later by the addition of CPAP.<a class="elsevierStyleCrossRef" href="#bib0250"><span class="elsevierStyleSup">50</span></a> The early CPAP group showed faster improvement of the physiological parameters (dyspnea, respiratory frequency, PaCO<span class="elsevierStyleInf">2</span> and PaO<span class="elsevierStyleInf">2</span>), a lesser need for inotropic drugs and intubation, and a tendency toward lesser mortality.</p></span><span id="sec0105" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0125">Ventilation modes</span><p id="par0225" class="elsevierStylePara elsevierViewall">In applying CPAP, we usually employ CPAP masks without the need for a respirator–a fact that simplifies treatment. This is particularly interesting in the pre-hospital setting or in Departments with limited resources. The PEEP values used in the treatment of ACPE vary from 5 to 12.5<span class="elsevierStyleHsp" style=""></span>cmH<span class="elsevierStyleInf">2</span>O, depending on the study.</p><p id="par0230" class="elsevierStylePara elsevierViewall">In applying NIPPV, a respirator is essential. For the treatment of ACPE, the PEEP values (in the same way as in CPAP) should not be less than 5<span class="elsevierStyleHsp" style=""></span>cmH<span class="elsevierStyleInf">2</span>O, and the inspiratory support can vary between 6 and 15<span class="elsevierStyleHsp" style=""></span>cmH<span class="elsevierStyleInf">2</span>O in order to secure tidal volumes of about 8<span class="elsevierStyleHsp" style=""></span>ml/kg. <a class="elsevierStyleCrossRef" href="#fig0010">Fig. 2</a> proposes an interventional ventilation algorithm for patients with ACPE.</p><p id="par0235" class="elsevierStylePara elsevierViewall">As we have explained in this review, on choosing a ventilation mode in ACPE it has not been possible to demonstrate the superiority of one technique over the other in terms of the need for intubation, hospital mortality, hospital stay or the incidence of myocardial infarction. The technique chosen should firstly depend on equipment availability. In the equal availability of resources, and in the absence of confirmation of differences in patient outcome between the two techniques, we preferentially should use NIPPV instead of CPAP, since shortening of the time to clinical resolution in itself should be a primary objective in the management of these patients.</p></span></span><span id="sec0110" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0130">Conclusions</span><p id="par0240" class="elsevierStylePara elsevierViewall">The use of NIV is currently regarded as a first-line management option in patients with hypercapnic ARF in the context of COPD or in ACPE.</p><p id="par0245" class="elsevierStylePara elsevierViewall">In patients with COPD and hypercapnic ARF, the use of NIPPV has been shown to reduce the time to clinical and blood gas resolution, with fewer intubations, lesser hospital mortality and a shorter hospital stay. As such, the technique is currently included within the conventional treatment of ARF in these patients. The prophylactic use of NIPPV in weaning from invasive MV can be considered in high-risk COPD patients.</p><p id="par0250" class="elsevierStylePara elsevierViewall">Likewise, in ACPE, NIV has been found to shorten the time to clinical resolution, with faster improvement of gas exchange, and reduces the need for endotracheal intubation. A tendency toward lesser mortality is also observed with the use of both CPAP and NIPPV. The indicated ventilation mode in ACPE fundamentally depends on the available resources, though NIPPV is to be preferred due to its greater effect in reducing respiratory effort and faster clinical improvement.</p></span><span id="sec0115" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0135">Conflicts of interest</span><p id="par0255" class="elsevierStylePara elsevierViewall">The authors declare that they have no conflicts of interest.</p></span></span>" "textoCompletoSecciones" => array:1 [ "secciones" => array:10 [ 0 => array:2 [ "identificador" => "xres332268" "titulo" => "Abstract" ] 1 => array:2 [ "identificador" => "xpalclavsec314110" "titulo" => "Keywords" ] 2 => array:2 [ "identificador" => "xres332267" "titulo" => "Resumen" ] 3 => array:2 [ "identificador" => "xpalclavsec314111" "titulo" => "Palabras clave" ] 4 => array:2 [ "identificador" => "sec0005" "titulo" => "Introduction" ] 5 => array:3 [ "identificador" => "sec0010" "titulo" => "Use of noninvasive ventilation in patients with chronic obstructive pulmonary disease" "secciones" => array:6 [ 0 => array:2 [ "identificador" => "sec0015" "titulo" => "Epidemiology" ] 1 => array:2 [ "identificador" => "sec0020" "titulo" => "Physiopathological effects" ] 2 => array:2 [ "identificador" => "sec0025" "titulo" => "Clinical effects" ] 3 => array:3 [ "identificador" => "sec0030" "titulo" => "Postextubation noninvasive ventilation" "secciones" => array:3 [ 0 => array:2 [ "identificador" => "sec0035" "titulo" => "Noninvasive ventilation to facilitate weaning from invasive mechanical ventilation" ] 1 => array:2 [ "identificador" => "sec0040" "titulo" => "Noninvasive ventilation in the prevention of postextubation acute respiratory failure" ] 2 => array:2 [ "identificador" => "sec0045" "titulo" => "Noninvasive ventilation in the treatment of postextubation acute respiratory failure" ] ] ] 4 => array:2 [ "identificador" => "sec0050" "titulo" => "Ventilation modes" ] 5 => array:2 [ "identificador" => "sec0055" "titulo" => "Predictors of noninvasive ventilation success and failure" ] ] ] 6 => array:3 [ "identificador" => "sec0060" "titulo" => "Use of noninvasive ventilation in patients with acute cardiogenic pulmonary edema" "secciones" => array:9 [ 0 => array:2 [ "identificador" => "sec0065" "titulo" => "Epidemiology" ] 1 => array:2 [ "identificador" => "sec0070" "titulo" => "Physiological effects of noninvasive ventilation" ] 2 => array:2 [ "identificador" => "sec0075" "titulo" => "Clinical effects" ] 3 => array:2 [ "identificador" => "sec0080" "titulo" => "Effects on hospital stay" ] 4 => array:2 [ "identificador" => "sec0085" "titulo" => "Effects on the need for endotracheal intubation" ] 5 => array:2 [ "identificador" => "sec0090" "titulo" => "Effects on hospital mortality" ] 6 => array:2 [ "identificador" => "sec0095" "titulo" => "Use of noninvasive ventilation in acute coronary syndrome" ] 7 => array:2 [ "identificador" => "sec0100" "titulo" => "Use of noninvasive ventilation in the pre-hospital setting" ] 8 => array:2 [ "identificador" => "sec0105" "titulo" => "Ventilation modes" ] ] ] 7 => array:2 [ "identificador" => "sec0110" "titulo" => "Conclusions" ] 8 => array:2 [ "identificador" => "sec0115" "titulo" => "Conflicts of interest" ] 9 => array:1 [ "titulo" => "References" ] ] ] "pdfFichero" => "main.pdf" "tienePdf" => true "PalabrasClave" => array:2 [ "en" => array:1 [ 0 => array:4 [ "clase" => "keyword" "titulo" => "Keywords" "identificador" => "xpalclavsec314110" "palabras" => array:8 [ 0 => "Chronic obstructive pulmonary disease" 1 => "Congestive heart failure" 2 => "Noninvasive positive-pressure ventilation" 3 => "Continuous positive airway pressure" 4 => "Mortality" 5 => "Intubation" 6 => "Treatment outcome" 7 => "Review" ] ] ] "es" => array:1 [ 0 => array:4 [ "clase" => "keyword" "titulo" => "Palabras clave" "identificador" => "xpalclavsec314111" "palabras" => array:8 [ 0 => "Enfermedad pulmonar obstructiva crónica" 1 => "Insuficiencia cardiaca congestiva" 2 => "Ventilación no invasiva con presión positiva" 3 => "Presión positiva continua de aire" 4 => "Mortalidad" 5 => "Intubación" 6 => "Resultado del tratamiento" 7 => "Revisión" ] ] ] ] "tieneResumen" => true "resumen" => array:2 [ "en" => array:2 [ "titulo" => "Abstract" "resumen" => "<p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">Noninvasive ventilation (NIV) with conventional therapy improves the outcome of patients with acute respiratory failure due to hypercapnic decompensation of chronic obstructive pulmonary disease (COPD) or acute cardiogenic pulmonary edema (ACPE). This review summarizes the main effects of NIV in these pathologies. In COPD, NIV improves gas exchange and symptoms, reducing the need for endotracheal intubation, hospital mortality and hospital stay compared with conventional oxygen therapy. NIV may also avoid reintubation and may decrease the length of invasive mechanical ventilation. In ACPE, NIV accelerates the remission of symptoms and the normalization of blood gas parameters, reduces the need for endotracheal intubation, and is associated with a trend toward lesser mortality, without increasing the incidence of myocardial infarction. The ventilation modality used in ACPE does not affect patient prognosis.</p>" ] "es" => array:2 [ "titulo" => "Resumen" "resumen" => "<p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">La ventilación no invasiva (VNI) junto con el tratamiento convencional mejora la evolución de los pacientes con insuficiencia respiratoria aguda por descompensación hipercápnica de la enfermedad pulmonar obstructiva crónica (EPOC) o por edema agudo de pulmón cardiogénico (EAPC). Esta revisión resume los principales efectos de la VNI en dichas enfermedades. En la EPOC la VNI mejora el intercambio de gases y la clínica, reduce la necesidad de intubación endotraqueal, la mortalidad hospitalaria y la estancia hospitalaria en comparación con la oxigenoterapia convencional. Además, puede evitar la reintubación y disminuir el tiempo de ventilación mecánica invasiva. En el EAPC el tratamiento con VNI acelera la remisión de los síntomas y la normalización gasométrica, reduce la necesidad de intubación endotraqueal y se asocia a una tendencia a menor mortalidad sin aumentar la incidencia de infarto de miocardio. La modalidad ventilatoria utilizada en el EAPC no afecta el pronóstico de los pacientes.</p>" ] ] "NotaPie" => array:1 [ 0 => array:2 [ "etiqueta" => "☆" "nota" => "<p class="elsevierStyleNotepara" id="npar0005">Please cite this article as: Rialp Cervera G, del Castillo Blanco A, Pérez Aizcorreta O, Parra Morais L, por el GT-IRA de la SEMICYUC. Ventilación mecánica no invasiva en la enfermedad pulmonar obstructiva crónica y en el edema agudo de pulmón cardiogénico. Med Intensiva. 2014;38:111–121.</p>" ] ] "multimedia" => array:8 [ 0 => array:7 [ "identificador" => "fig0005" "etiqueta" => "Figure 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 1598 "Ancho" => 2170 "Tamanyo" => 195380 ] ] "descripcion" => array:1 [ "en" => "<p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">Physiopathology of hypercapnic acute respiratory failure in COPD and the processes that are blocked by the action of mechanical ventilation (represented in black). RF, respiratory frequency; PEEPext, positive end-expiratory pressure programmed by the ventilator; PEEPi, intrinsic PEEP; Texp, expiratory time; MV, mechanical ventilation; NIPPV, noninvasive positive pressure ventilation.</p>" ] ] 1 => array:7 [ "identificador" => "fig0010" "etiqueta" => "Figure 2" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr2.jpeg" "Alto" => 1709 "Ancho" => 2503 "Tamanyo" => 260688 ] ] "descripcion" => array:1 [ "en" => "<p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">Application of noninvasive ventilation in acute respiratory failure in chronic obstructive pulmonary disease with hypercapnic decompensation, and in acute cardiogenic pulmonary edema. The ventilatory parameters used are orientative according to tolerance of the technique and the presence of leakage. CPAP, continuous positive airway pressure; ACPE, acute cardiogenic pulmonary edema; COPD, chronic obstructive pulmonary disease; RF, respiratory frequency; PEEP, positive end-expiratory pressure; NIPPV, noninvasive ventilation with inspiratory support (PS, pressure support; BiPAP, proportional assist ventilation, etc.); TV, tidal volume.</p>" ] ] 2 => array:7 [ "identificador" => "tbl0005" "etiqueta" => "Table 1" "tipo" => "MULTIMEDIATABLA" "mostrarFloat" => true "mostrarDisplay" => false "tabla" => array:2 [ "leyenda" => "<p id="spar0030" class="elsevierStyleSimplePara elsevierViewall">MD, mean difference; CI, confidence interval; RR, relative risk.</p>" "tablatextoimagen" => array:1 [ 0 => array:2 [ "tabla" => array:1 [ 0 => """ <table border="0" frame="\n \t\t\t\t\tvoid\n \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black"> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">Intubation RR (95% CI) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">Hospital mortality RR (95% CI) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">Hospital stay MD (95% CI) \t\t\t\t\t\t\n \t\t\t\t</td></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleItalic">Quon et al. (2008)</span><a class="elsevierStyleCrossRef" href="#bib0080"><span class="elsevierStyleSup">16</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.35 (0.26–0.47) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.45 (0.30–0.66) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">−1.94 d (−3.87 to −0.01) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " colspan="4" align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleVsp" style="height:0.5px"></span></td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " colspan="4" align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleItalic">Ram et al. (2004)</span><a class="elsevierStyleCrossRef" href="#bib0075"><span class="elsevierStyleSup">15</span></a></td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Global \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.42 (0.33–0.53) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.52 (0.35–0.76) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">−3.24 d (−4.42 to −2.06) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>pH 7.30–7.35 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.54 (0.32–0.89) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.45 (0.26–0.80) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">−0.89 d (−2.92 to 1.14) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>pH <7.30 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.40 (0.30–0.53) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.51 (0.29–0.90) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">−4.43 d (−5.88 to −2.98) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " colspan="4" align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleVsp" style="height:0.5px"></span></td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleItalic">Fernández Guerra et al. (2003)</span><a class="elsevierStyleCrossRef" href="#bib0085"><span class="elsevierStyleSup">17</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.29 (0.19–0.44) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.38 (0.23–0.63) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">– \t\t\t\t\t\t\n \t\t\t\t</td></tr></tbody></table> """ ] "imagenFichero" => array:1 [ 0 => "xTab488069.png" ] ] ] ] "descripcion" => array:1 [ "en" => "<p id="spar0025" class="elsevierStyleSimplePara elsevierViewall">Results of different metaanalyses on the effects of the application of noninvasive ventilation on intubation, hospital mortality and hospital stay in patients with COPD and hypercapnic acute respiratory failure.</p>" ] ] 3 => array:7 [ "identificador" => "tbl0010" "etiqueta" => "Table 2" "tipo" => "MULTIMEDIATABLA" "mostrarFloat" => true "mostrarDisplay" => false "tabla" => array:1 [ "tablatextoimagen" => array:1 [ 0 => array:2 [ "tabla" => array:1 [ 0 => """ <table border="0" frame="\n \t\t\t\t\tvoid\n \t\t\t\t" class=""><tbody title="tbody"><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleItalic">Nava et al. (2005)</span><a class="elsevierStyleCrossRef" href="#bib0120"><span class="elsevierStyleSup">24</span></a> \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>More than one consecutive MV weaning test failure \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Antecedents of heart failure \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>PaCO<span class="elsevierStyleInf">2</span> >45<span class="elsevierStyleHsp" style=""></span>mmHg postextubation \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>More than one comorbid condition \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Upper airway stridor not requiring immediate reintubation \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Non-productive cough or bronchorrhea \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleVsp" style="height:0.5px"></span> \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleItalic">Ferrer et al. (2006)</span><a class="elsevierStyleCrossRef" href="#bib0125"><span class="elsevierStyleSup">25</span></a> \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Age over 65 years \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Heart failure as cause of intubation \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>APACHE II >12 points on day of extubation \t\t\t\t\t\t\n \t\t\t\t</td></tr></tbody></table> """ ] "imagenFichero" => array:1 [ 0 => "xTab488068.png" ] ] ] ] "descripcion" => array:1 [ "en" => "<p id="spar0035" class="elsevierStyleSimplePara elsevierViewall">Risk factors for postextubation acute respiratory failure.</p>" ] ] 4 => array:7 [ "identificador" => "tbl0015" "etiqueta" => "Table 3" "tipo" => "MULTIMEDIATABLA" "mostrarFloat" => true "mostrarDisplay" => false "tabla" => array:2 [ "leyenda" => "<p id="spar0045" class="elsevierStyleSimplePara elsevierViewall">RF, respiratory frequency.</p>" "tablatextoimagen" => array:1 [ 0 => array:2 [ "tabla" => array:1 [ 0 => """ <table border="0" frame="\n \t\t\t\t\tvoid\n \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">Success \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">Failure \t\t\t\t\t\t\n \t\t\t\t</td></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Lesser age \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Asynchrony with respirator \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Initial pH 7.5–7.35 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Intolerance of mask \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Adequate initial level of consciousness \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Initial pH <7.20 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " rowspan="3" align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Satisfactory response after one hour of NIV (improvement of pH, PaCO<span class="elsevierStyleInf">2</span> and RF)</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Diagnosis of pneumonia \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Abundant respiratory secretions \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Encephalopathy \t\t\t\t\t\t\n \t\t\t\t</td></tr></tbody></table> """ ] "imagenFichero" => array:1 [ 0 => "xTab488072.png" ] ] ] ] "descripcion" => array:1 [ "en" => "<p id="spar0040" class="elsevierStyleSimplePara elsevierViewall">Predictors of noninvasive ventilation success and failure.</p>" ] ] 5 => array:7 [ "identificador" => "tbl0020" "etiqueta" => "Table 4" "tipo" => "MULTIMEDIATABLA" "mostrarFloat" => true "mostrarDisplay" => false "tabla" => array:1 [ "tablatextoimagen" => array:1 [ 0 => array:2 [ "tabla" => array:1 [ 0 => """ <table border="0" frame="\n \t\t\t\t\tvoid\n \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black"> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">Advantages \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">Inconveniences \t\t\t\t\t\t\n \t\t\t\t</td></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " rowspan="3" align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Nasal mask</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " rowspan="3" align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Allows food intake, verbal communication and expectoration</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Presence of leakage \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Need for nasal permeability \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Facial bedsores \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " rowspan="4" align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Oronasal mask</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Allows breathing through nose and mouth \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Difficulty for verbal communication and expectoration \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " rowspan="3" align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Less need for patient collaboration than with nasal mask</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Vomiting \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Claustrophobia \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Facial bedsores \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " rowspan="3" align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Total face mask</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Reduction of leakage \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Difficulty for verbal communication and expectoration \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Less need for patient collaboration than with oronasal mask \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Vomiting \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Better adaptation in patients with facial deformities \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Claustrophobia \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " rowspan="6" align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Helmet</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Reduction of leakage \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Vomiting \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " rowspan="5" align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Absence of facial bedsores</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Claustrophobia \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Reinhalation \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Noise \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Asynchrony \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Axillary bedsores \t\t\t\t\t\t\n \t\t\t\t</td></tr></tbody></table> """ ] "imagenFichero" => array:1 [ 0 => "xTab488071.png" ] ] ] ] "descripcion" => array:1 [ "en" => "<p id="spar0050" class="elsevierStyleSimplePara elsevierViewall">Principal advantages and inconveniences of the main interfaces for the application of noninvasive ventilation.</p>" ] ] 6 => array:7 [ "identificador" => "tbl0025" "etiqueta" => "Table 5" "tipo" => "MULTIMEDIATABLA" "mostrarFloat" => true "mostrarDisplay" => false "tabla" => array:1 [ "tablatextoimagen" => array:1 [ 0 => array:2 [ "tabla" => array:1 [ 0 => """ <table border="0" frame="\n \t\t\t\t\tvoid\n \t\t\t\t" class=""><tbody title="tbody"><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleItalic">Cardiovascular effects</span> \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Decreased right ventricle preload \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Decreased left ventricle postload \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Increased myocardial contractility \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Increased cardiac output \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleVsp" style="height:0.5px"></span> \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleItalic">Pulmonary effects</span> \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Alveolar recruitment \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Increased functional residual capacity \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Increased lung compliance \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Decreased intrapulmonary shunt \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Decreased respiratory effort \t\t\t\t\t\t\n \t\t\t\t</td></tr></tbody></table> """ ] "imagenFichero" => array:1 [ 0 => "xTab488067.png" ] ] ] ] "descripcion" => array:1 [ "en" => "<p id="spar0055" class="elsevierStyleSimplePara elsevierViewall">Physiological effects of positive pressure ventilation in patients with acute cardiogenic pulmonary edema.</p>" ] ] 7 => array:7 [ "identificador" => "tbl0030" "etiqueta" => "Table 6" "tipo" => "MULTIMEDIATABLA" "mostrarFloat" => true "mostrarDisplay" => false "tabla" => array:2 [ "leyenda" => "<p id="spar0065" class="elsevierStyleSimplePara elsevierViewall">CPAP, continuous positive airway pressure; CI, confidence interval; O<span class="elsevierStyleInf">2</span>, conventional oxygen therapy; RR, relative risk; ACS, acute coronary syndrome; NIV, noninvasive ventilation; NIPPV, noninvasive positive pressure ventilation.</p>" "tablatextoimagen" => array:1 [ 0 => array:2 [ "tabla" => array:1 [ 0 => """ <table border="0" frame="\n \t\t\t\t\tvoid\n \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black"> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">IntubationRR (95% CI) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">Hospital mortalityRR (95% CI) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" style="border-bottom: 2px solid black">Appearance of ACSRR (95% CI) \t\t\t\t\t\t\n \t\t\t\t</td></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " colspan="4" align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleItalic">CPAP vs O</span><span class="elsevierStyleInf"><span class="elsevierStyleItalic">2</span></span></td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Weng et al. (2010)<a class="elsevierStyleCrossRef" href="#bib0245"><span class="elsevierStyleSup">49</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.44 (0.32–0.66) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.64 (0.44–0.92) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">1.07 (0.84–1.37) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Vital et al. (2008)<a class="elsevierStyleCrossRef" href="#bib0285"><span class="elsevierStyleSup">57</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.46 (0.32–0.65) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.58 (0.38–0.88) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.91 (0.37–2.24) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Peter et al. (2006)<a class="elsevierStyleCrossRef" href="#bib0265"><span class="elsevierStyleSup">53</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.44 (0.29–0.66) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.59 (0.38–0.90) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.83 (0.43–1.61) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Masip et al. (2005)<a class="elsevierStyleCrossRef" href="#bib0260"><span class="elsevierStyleSup">52</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.40 (0.27–0.58) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.53 (0.35–0.81) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">– \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " colspan="4" align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleVsp" style="height:0.5px"></span></td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " colspan="4" align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleItalic">NIPPV vs O</span><span class="elsevierStyleInf">2</span></td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Weng et al. (2010)<a class="elsevierStyleCrossRef" href="#bib0245"><span class="elsevierStyleSup">49</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.54 (0.33–0.86) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.82 (0.58–1.15) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">1.09 (0.87–1.37) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Vital et al. (2008)<a class="elsevierStyleCrossRef" href="#bib0285"><span class="elsevierStyleSup">57</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.68 (0.27–1.73) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.70 (0.40–1.23) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.00 (0.00–0.00) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Peter et al. (2006)<a class="elsevierStyleCrossRef" href="#bib0265"><span class="elsevierStyleSup">53</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.50 (0.27–0.90) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.63 (0.37–1.10) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">1.19 (0.68–2.10) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Masip et al. (2005)<a class="elsevierStyleCrossRef" href="#bib0260"><span class="elsevierStyleSup">52</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.48 (0.30–0.76) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.60 (0.34–1.05) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">– \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " colspan="4" align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleVsp" style="height:0.5px"></span></td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " colspan="4" align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleItalic">NIPPV vs CPAP</span></td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Weng et al. (2010)<a class="elsevierStyleCrossRef" href="#bib0245"><span class="elsevierStyleSup">49</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">1.23 (0.72–2.10) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">1.06 (0.72–1.57) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">1.09 (0.82–1.46) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Vital et al. (20080<a class="elsevierStyleCrossRef" href="#bib0285"><span class="elsevierStyleSup">57</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.92 (0.36–2.32) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.84 (0.26–2.78) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">1.78 (3.70–0.83) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Collins et al. (2006)<a class="elsevierStyleCrossRef" href="#bib0280"><span class="elsevierStyleSup">56</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">1.00 (0.15–6.66) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.81 (0.30–2.17) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">– \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Peter et al. (2006)<a class="elsevierStyleCrossRef" href="#bib0265"><span class="elsevierStyleSup">53</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.94 (0.48–1.86) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.75 (0.40–1.43) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">1.49 (0.92–2.42) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Ho et al. (2006)<a class="elsevierStyleCrossRef" href="#bib0275"><span class="elsevierStyleSup">55</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.80 (0.33–1.94) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.76 (0.32–1.78) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">2.10 (0.91–4.84) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " colspan="4" align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleVsp" style="height:0.5px"></span></td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " colspan="4" align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleItalic">NIV vs O</span><span class="elsevierStyleInf"><span class="elsevierStyleItalic">2</span></span></td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Vital et al. (2008)<a class="elsevierStyleCrossRef" href="#bib0285"><span class="elsevierStyleSup">57</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.53 (0.34–0.83) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.62 (0.45–0.84) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">1.24 (0.79–1.95) \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Collins et al. (2006)<a class="elsevierStyleCrossRef" href="#bib0280"><span class="elsevierStyleSup">56</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.43 (0.21–0.87) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.61 (0.41–0.89) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">– \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t"><span class="elsevierStyleHsp" style=""></span>Masip et al. (2005)<a class="elsevierStyleCrossRef" href="#bib0260"><span class="elsevierStyleSup">52</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.43 (0.32–0.57) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="char" valign="\n \t\t\t\t\ttop\n \t\t\t\t">0.55 (0.40–0.78) \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="" valign="\n \t\t\t\t\ttop\n \t\t\t\t"> \t\t\t\t\t\t\n \t\t\t\t</td></tr></tbody></table> """ ] "imagenFichero" => array:1 [ 0 => "xTab488070.png" ] ] ] ] "descripcion" => array:1 [ "en" => "<p id="spar0060" class="elsevierStyleSimplePara elsevierViewall">Results of different metaanalyses on the application of noninvasive ventilation in patients with acute cardiogenic pulmonary edema. Effects upon intubation, hospital mortality and the appearance of acute coronary syndrome.</p>" ] ] ] "bibliografia" => array:2 [ "titulo" => "References" "seccion" => array:1 [ 0 => array:2 [ "identificador" => "bibs0005" "bibliografiaReferencia" => array:60 [ 0 => array:3 [ "identificador" => "bib0005" "etiqueta" => "1" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Evolution of mechanical ventilation in response to clinical research" "autores" => array:1 [ 0 => array:2 [ "etal" => true "autores" => array:6 [ 0 => "A. Esteban" 1 => "N.D. Ferguson" 2 => "M.O. Meade" 3 => "F. Frutos-Vivar" 4 => "C. Apezteguia" 5 => "L. Brochard" ] ] ] ] ] "host" => array:1 [ 0 => array:2 [ "doi" => "10.1164/rccm.200706-893OC" "Revista" => array:6 [ "tituloSerie" => "Am J Respir Crit Care Med" "fecha" => "2008" "volumen" => "177" "paginaInicial" => "170" "paginaFinal" => "177" "link" => array:1 [ 0 => array:2 [ "url" => "https://www.ncbi.nlm.nih.gov/pubmed/17962636" "web" => "Medline" ] ] ] ] ] ] ] ] 1 => array:3 [ "identificador" => "bib0010" "etiqueta" => "2" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Secular trends in nosocomial infections and mortality associated with noninvasive ventilation in patients with exacerbation of COPD and pulmonary edema" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:5 [ 0 => "E. Girou" 1 => "C. Brun-Buisson" 2 => "S. Taillé" 3 => "F. Lemaire" 4 => "L. Brochard" ] ] ] ] ] "host" => array:1 [ 0 => array:2 [ "doi" => "10.1001/jama.290.22.2985" "Revista" => array:6 [ "tituloSerie" => "JAMA" "fecha" => "2003" "volumen" => "290" "paginaInicial" => "2985" "paginaFinal" => "2991" "link" => array:1 [ 0 => array:2 [ "url" => "https://www.ncbi.nlm.nih.gov/pubmed/14665660" "web" => "Medline" ] ] ] ] ] ] ] ] 2 => array:3 [ "identificador" => "bib0015" "etiqueta" => "3" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Increased use of noninvasive ventilation in French intensive care units" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:5 [ 0 => "A. Demoule" 1 => "E. Girou" 2 => "J.C. Richard" 3 => "S. Taillé" 4 => "L. Brochard" ] ] ] ] ] "host" => array:1 [ 0 => array:2 [ "doi" => "10.1007/s00134-006-0229-z" "Revista" => array:6 [ "tituloSerie" => "Intensive Care Med" "fecha" => "2006" "volumen" => "32" "paginaInicial" => "1747" "paginaFinal" => "1755" "link" => array:1 [ 0 => array:2 [ "url" => "https://www.ncbi.nlm.nih.gov/pubmed/16799775" "web" => "Medline" ] ] ] ] ] ] ] ] 3 => array:3 [ "identificador" => "bib0020" "etiqueta" => "4" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Benchmark data from more than 240,000 adults that reflect the current practice of critical care in the United States" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:4 [ 0 => "C.M. Lilly" 1 => "I.H. Zuckerman" 2 => "O. Badawi" 3 => "R.R. Riker" ] ] ] ] ] "host" => array:1 [ 0 => array:2 [ "doi" => "10.1378/chest.11-0718" "Revista" => array:6 [ "tituloSerie" => "Chest" "fecha" => "2011" "volumen" => "140" "paginaInicial" => "1232" "paginaFinal" => "1242" "link" => array:1 [ 0 => array:2 [ "url" => "https://www.ncbi.nlm.nih.gov/pubmed/21868469" "web" => "Medline" ] ] ] ] ] ] ] ] 4 => array:3 [ "identificador" => "bib0025" "etiqueta" => "5" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Modelo de probabilidad de ventilación mecánica prolongada" "autores" => array:1 [ 0 => array:2 [ "etal" => true "autores" => array:6 [ 0 => "J.M. Añón" 1 => "V. Gómez-Tello" 2 => "E. González-Higueras" 3 => "J.J. Oñoro" 4 => "V. Córcoles" 5 => "M. Quintana" ] ] ] ] ] "host" => array:1 [ 0 => array:2 [ "doi" => "10.1016/j.medin.2012.01.003" "Revista" => array:6 [ "tituloSerie" => "Med Intensiva" "fecha" => "2012" "volumen" => "36" "paginaInicial" => "488" "paginaFinal" => "495" "link" => array:1 [ 0 => array:2 [ "url" => "https://www.ncbi.nlm.nih.gov/pubmed/22386270" "web" => "Medline" ] ] ] ] ] ] ] ] 5 => array:3 [ "identificador" => "bib0030" "etiqueta" => "6" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Geographical variations in the prevalence of COPD in Spain: relationship to smoking, death rates and other determining factors" "autores" => array:1 [ 0 => array:2 [ "etal" => true "autores" => array:6 [ 0 => "J.B. Soriano" 1 => "M. Miravitlles" 2 => "L. Borderías" 3 => "E. Duran-Tauleria" 4 => "F. García Río" 5 => "J. Martínez" ] ] ] ] ] "host" => array:1 [ 0 => array:2 [ "doi" => "10.1016/j.arbres.2010.06.008" "Revista" => array:6 [ "tituloSerie" => "Arch Bronconeumol" "fecha" => "2010" "volumen" => "46" "paginaInicial" => "522" "paginaFinal" => "530" "link" => array:1 [ 0 => array:2 [ "url" => "https://www.ncbi.nlm.nih.gov/pubmed/20832926" "web" => "Medline" ] ] ] ] ] ] ] ] 6 => array:3 [ "identificador" => "bib0035" "etiqueta" => "7" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Clinical practice guidelines for the use of noninvasive positive-pressure ventilation and noninvasive continuous positive airway pressure in the acute care setting" "autores" => array:1 [ 0 => array:2 [ "etal" => true "autores" => array:6 [ 0 => "S.P. Keenan" 1 => "T. Sinuff" 2 => "K.E. Burns" 3 => "J. Muscedere" 4 => "J. Kutsogiannis" 5 => "S. Mehta" ] ] ] ] ] "host" => array:1 [ 0 => array:2 [ "doi" => "10.1503/cmaj.100071" "Revista" => array:6 [ "tituloSerie" => "CMAJ" "fecha" => "2011" "volumen" => "183" "paginaInicial" => "E195" "paginaFinal" => "E214" "link" => array:1 [ 0 => array:2 [ "url" => "https://www.ncbi.nlm.nih.gov/pubmed/21324867" "web" => "Medline" ] ] ] ] ] ] ] ] 7 => array:3 [ "identificador" => "bib0040" "etiqueta" => "8" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Outcomes of noninvasive ventilation for acute exacerbations of chronic obstructive pulmonary disease in the United States, 1998–2008" "autores" => array:1 [ 0 => array:2 [ "etal" => true "autores" => array:6 [ 0 => "D. Chandra" 1 => "J.A. Stamm" 2 => "B. Taylor" 3 => "R.M. Ramos" 4 => "L. Satterwhite" 5 => "J.A. Krishnan" ] ] ] ] ] "host" => array:1 [ 0 => array:2 [ "doi" => "10.1164/rccm.201106-1094OC" "Revista" => array:6 [ "tituloSerie" => "Am J Respir Crit Care Med" "fecha" => "2012" "volumen" => "185" "paginaInicial" => "152" "paginaFinal" => "159" "link" => array:1 [ 0 => array:2 [ "url" => "https://www.ncbi.nlm.nih.gov/pubmed/22016446" "web" => "Medline" ] ] ] ] ] ] ] ] 8 => array:3 [ "identificador" => "bib0045" "etiqueta" => "9" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "A European survey of noninvasive ventilation practices" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:5 [ 0 => "C. Crimi" 1 => "A. Noto" 2 => "P. Princi" 3 => "A. Esquinas" 4 => "S. Nava" ] ] ] ] ] "host" => array:1 [ 0 => array:2 [ "doi" => "10.1183/09031936.00123509" "Revista" => array:6 [ "tituloSerie" => "Eur Respir J" "fecha" => "2010" "volumen" => "36" "paginaInicial" => "362" "paginaFinal" => "369" "link" => array:1 [ 0 => array:2 [ "url" => "https://www.ncbi.nlm.nih.gov/pubmed/20075052" "web" => "Medline" ] ] ] ] ] ] ] ] 9 => array:3 [ "identificador" => "bib0050" "etiqueta" => "10" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Reversal of acute exacerbations of chronic obstructive lung disease by inspiratory assistance with a face mask" "autores" => array:1 [ 0 => array:2 [ "etal" => true "autores" => array:6 [ 0 => "L. Brochard" 1 => "D. Isabey" 2 => "J. Piquet" 3 => "P. Amaro" 4 => "J. Mancebo" 5 => "A.A. Messadi" ] ] ] ] ] "host" => array:1 [ 0 => array:2 [ "doi" => "10.1056/NEJM199011293232204" "Revista" => array:6 [ "tituloSerie" => "N Engl J Med" "fecha" => "1990" "volumen" => "323" "paginaInicial" => "1523" "paginaFinal" => "1530" "link" => array:1 [ 0 => array:2 [ "url" => "https://www.ncbi.nlm.nih.gov/pubmed/2122253" "web" => "Medline" ] ] ] ] ] ] ] ] 10 => array:3 [ "identificador" => "bib0055" "etiqueta" => "11" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Noninvasive ventilation for acute exacerbations of chronic obstructive pulmonary disease" "autores" => array:1 [ 0 => array:2 [ "etal" => true "autores" => array:6 [ 0 => "L. Brochard" 1 => "J. Mancebo" 2 => "M. Wysocki" 3 => "F. Lofaso" 4 => "G. Conti" 5 => "A. Rauss" ] ] ] ] ] "host" => array:1 [ 0 => array:2 [ "doi" => "10.1056/NEJM199509283331301" "Revista" => array:6 [ "tituloSerie" => "N Engl J Med" "fecha" => "1995" "volumen" => "333" "paginaInicial" => "817" "paginaFinal" => "822" "link" => array:1 [ 0 => array:2 [ "url" => "https://www.ncbi.nlm.nih.gov/pubmed/7651472" "web" => "Medline" ] ] ] ] ] ] ] ] 11 => array:3 [ "identificador" => "bib0060" "etiqueta" => "12" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Early use of non-invasive ventilation for acute exacerbations of chronic obstructive pulmonary disease on general respiratory wards: a multicentre randomised controlled trial" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:3 [ 0 => "P.K. Plant" 1 => "J.L. Owen" 2 => "M.W. Elliott" ] ] ] ] ] "host" => array:1 [ 0 => array:1 [ "Revista" => array:6 [ "tituloSerie" => "Lancet" "fecha" => "2000" "volumen" => "355" "paginaInicial" => "1931" "paginaFinal" => "1935" "link" => array:1 [ 0 => array:2 [ "url" => "https://www.ncbi.nlm.nih.gov/pubmed/10859037" "web" => "Medline" ] ] ] ] ] ] ] ] 12 => array:3 [ "identificador" => "bib0065" "etiqueta" => "13" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Which patients with acute exacerbation of chronic obstructive pulmonary disease benefit from noninvasive positive-pressure ventilation? A systematic review of the literature" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:4 [ 0 => "S.P. Keenan" 1 => "T. Sinuff" 2 => "D.J. Cook" 3 => "N.S. Hill" ] ] ] ] ] "host" => array:1 [ 0 => array:1 [ "Revista" => array:6 [ "tituloSerie" => "Ann Intern Med" "fecha" => "2003" "volumen" => "138" "paginaInicial" => "861" "paginaFinal" => "870" "link" => array:1 [ 0 => array:2 [ "url" => "https://www.ncbi.nlm.nih.gov/pubmed/12779296" "web" => "Medline" ] ] ] ] ] ] ] ] 13 => array:3 [ "identificador" => "bib0070" "etiqueta" => "14" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Noninvasive ventilation in acute respiratory failure – a meta-analysis update" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:4 [ 0 => "J.V. Peter" 1 => "J.L. Moran" 2 => "J. Phillips-Hughes" 3 => "D. Warn" ] ] ] ] ] "host" => array:1 [ 0 => array:1 [ "Revista" => array:6 [ "tituloSerie" => "Crit Care Med" "fecha" => "2002" "volumen" => "30" "paginaInicial" => "555" "paginaFinal" => "562" "link" => array:1 [ 0 => array:2 [ "url" => "https://www.ncbi.nlm.nih.gov/pubmed/11990914" "web" => "Medline" ] ] ] ] ] ] ] ] 14 => array:3 [ "identificador" => "bib0075" "etiqueta" => "15" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Non-invasive positive pressure ventilation for treatment of respiratory failure due to exacerbations of chronic obstructive pulmonary disease" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:4 [ 0 => "F.S. Ram" 1 => "J. Picot" 2 => "J. Lightowler" 3 => "J.A. Wedzicha" ] ] ] ] ] "host" => array:1 [ 0 => array:2 [ "doi" => "10.1002/14651858.CD004104.pub3" "Revista" => array:3 [ "tituloSerie" => "Cochrane Database Syst Rev" "fecha" => "2004" "paginaInicial" => "CD004104" ] ] ] ] ] ] 15 => array:3 [