Duration of the first prone positioning maneuver and its association with 90-day mortality in patients with acute respiratory failure due to COVID-19: A retrospective study of time terciles Alejandro González-Castro; Carmen Huertas Martín; Elena Cuenca Fito; Yhivian Peñasco; Camilo Gonzalez; Juan Carlos Rodríguez Borregán;

Invasive mechanical ventilation and prolonged prone position during the COVID-19 pandemic P. Concha; M. Treso-Geira; C. Esteve-Sala; C. Prades-Berengué; J. Domingo-Marco; F. Roche-Campo;

Is hemodynamic instability an absolute contraindication for prone position? Marina Busico; Fernando Villarejo;