[Clinical characteristics related to mortality by COVID-19 in intensive care]

Josué Israel López-Valdés1, Rubén Alejandro Ponce-Mendoza1, Miguel Solís-Barraza2

  • 1Instituto Mexicano del Seguro Social, Hospital General Regional No. 66, Unidad de Cuidados Intensivos. Ciudad Juárez, Chihuahua, México.

Abstract

Insights

Older age, longer symptom duration, and lower oxygen saturation are key predictors of COVID-19 mortality in intensive care units (ICUs). Cardiovascular and renal complications, along with hyperglycemia, also significantly impact patient outcomes.

Area of Science:

  • Critical Care Medicine
  • Infectious Diseases
  • Epidemiology

Background:

  • The COVID-19 pandemic necessitated widespread hospital restructuring in Mexico.
  • There was limited information regarding COVID-19 patient development in second-level intensive care units (ICUs).

Purpose of the Study:

  • To identify clinical characteristics associated with COVID-19 mortality in a second-level ICU.
  • To analyze risk factors contributing to death in critically ill COVID-19 patients.

Main Methods:

  • An observational, retrospective cohort study was conducted from March to November 2020.
  • Data included demographics, medical history, clinical, ventilatory, and laboratory characteristics, and complications.
  • Cox regression analysis was used to determine significant risk factors for mortality.

Main Results:

  • In-hospital mortality was 55% among the studied ICU patients.
  • Older age, higher APACHE II scores, longer onset-to-ICU time, and lower oxygen saturation were significantly associated with mortality.
  • The average ICU stay was 8 days.

Conclusions:

  • Pre-admission factors for mortality risk include advanced age, delayed symptom-to-hospital admission, and low oxygenation.
  • In-hospital determinants of mortality involve cardiovascular complications, renal complications, and hyperglycemia.

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