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Original article
Available online 11 March 2026

Factors associated with mortality in adults with oncologic disease admitted to the intensive care unit: A single-center retrospective cohort study

Factores asociados con la mortalidad en adultos con enfermedad oncológica ingresados a la unidad de cuidados intensivos: un estudio de cohorte retrospectiva
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David Sandoval Castellanosa,b,
Corresponding author
dasandovalca@unal.edu.co

Corresponding author.
, Kevin Maldonado Cañónb, Jairo Antonio Pérez Celyb,c, Heider Alexis Bautista Miera,b, Jimena del Pilar Moreno Chavesa
a Departamento de Medicina Interna, Hospital Universitario Nacional de Colombia, Bogotá, Colombia
b Departamento de Medicina Interna, Facultad de Medicina, Universidad Nacional de Colombia, Bogotá, Colombia
c Unidad de Cuidado Intensivo, Hospital Universitario Nacional de Colombia, Bogotá, Colombia
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Abstract
Objective

To identify sociodemographic, clinical, and laboratory variables associated with in-hospital mortality among adult oncological patients admitted to the intensive care unit (ICU) between 2019 and 2023.

Design

Retrospective cohort study.

Setting

ICU of the Hospital Universitario Nacional de Colombia, Bogotá.

Patients

A total of 264 adults with confirmed solid or hematologic malignancies were selected from an initial cohort of 927 cases.

Interventions

ICU usual care was analyzed.

Main variables of interest

In-hospital mortality was the primary outcome, with sociodemographic characteristics, clinical history, previous oncologic treatment, laboratory parameters, complications, and prognostic scores as explanatory variables. Descriptive, bivariate, and multivariate analyses were performed using robust Poisson regression to estimate adjusted relative risks (RRs) and 95% confidence intervals (95% CIs).

Results

In-hospital mortality was 46.2%. Independent predictors of mortality included higher SAPS 3 score (RR 1.45; 95%CI: 1.27–1.64; p < 0.001), poor functional status (ECOG 3–4) (RR 1.66; 95%CI: 1.28–2.16; p < 0.001), circulatory shock (RR 1.49; 95%CI: 1.20–1.86; p < 0.001), invasive mechanical ventilation (RR 1.42; 95%CI: 1.14–1.78; p = 0.002), and longer ICU stay (RR 1.22; 95%CI: 1.12–1.32; p < 0.001). Previous oncologic treatment was associated with a lower risk of mortality (RR 0.60; 95% CI: 0.47–0.77; p < 0.001).

Conclusions

This study identifies ECOG 3 and 4, SAPS 3, circulatory shock, and mechanical ventilation as key predictors of mortality, whereas prior oncologic treatment was protective, supporting the need for individualized ICU admission criteria for oncological patients.

Keywords:
Intensive care unit
Neoplasms
Mortality
Risk factors
Functional status
Shock
Resumen
Objetivo

Identificar variables clínicas, sociodemográficas y de laboratorio asociadas con la mortalidad intrahospitalaria en pacientes adultos con enfermedad oncológica ingresados a la unidad de cuidados intensivos (UCI) entre 2019 y 2023.

Diseño

estudio observacional de cohorte retrospectiva.

Ámbito

Unidad de Cuidados Intensivos del Hospital Universitario Nacional de Colombia.

Pacientes

264 adultos con diagnóstico confirmado de neoplasia sólida o hematológica, seleccionados de una cohorte inicial de 927 casos.

Intervenciones

Se analizó la atención habitual en la UCI.

Variables de interés principales

Mortalidad intrahospitalaria como desenlace primario, con características sociodemográficas, antecedentes clínicos, tratamiento oncológico previo, variables de laboratorio, complicaciones y escalas pronósticas como variables explicativas. Se realizaron análisis descriptivos, bivariados y multivariados mediante regresión de Poisson robusta para estimar los riesgos relativos (RR) ajustados e intervalos de confianza del 95% (IC95%).

Resultados

La mortalidad intrahospitalaria fue del 46,2%. Los predictores independientes de mortalidad fueron: SAPS 3 elevado (RR 1.45; IC95%: 1.27–1.64; p < 0.001), estado funcional deteriorado (ECOG 3–4) (RR 1.66; IC95%: 1.28–2.16; p < 0.001), choque circulatorio (RR 1.49; IC95%: 1.20–1.86; p < 0.001), ventilación mecánica invasiva (RR 1.42; IC95%: 1.14–1.78; p = 0.002) y mayor estancia en UCI (RR 1.22; IC95%: 1.12–1.32; p < 0.001). El tratamiento oncológico previo se asoció con menor riesgo de mortalidad (RR 0.60; IC95%: 0.47–0.77; p < 0.001).

Conclusiones

Este estudio identifica como predictores de mortalidad el ECOG 3–4, el SAPS 3, el choque circulatorio y la ventilación mecánica, y el tratamiento oncológico previo como protector, apoyando criterios de admisión a la UCI individualizados para los pacientes oncológicos.

Palabras clave:
Unidades de Cuidados Intensivos
Neoplasias
Mortalidad
Factores de riesgo
Estado funcional
Choque

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