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Obesity and mortality in critically ill COVID-19 patients with respiratory failure
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Obesity and mortality in critically ill COVID-19 patients with respiratory failure
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Obesity and mortality in critically ill COVID-19 patients with respiratory failure
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Journal Article
Obesity and mortality in critically ill COVID-19 patients with respiratory failure
2021
Overview
BackgroundPatients with obesity are at increased risk of severe COVID-19, requiring mechanical ventilation due to acute respiratory failure. However, conflicting data are obtained for intensive care unit (ICU) mortality.ObjectiveTo analyze the relationship between obesity and in-hospital mortality of ICU patients with COVID-19.Subjects/methodsPatients admitted to the ICU for COVID-19 acute respiratory distress syndrome (ARDS) were included retrospectively. The following data were collected: comorbidities, body mass index (BMI), the severity of ARDS assessed with PaO2/FiO2 (P/F) ratios, disease severity measured by the Simplified Acute Physiology Score II (SAPS II), management and outcomes.ResultsFor a total of 222 patients, there were 34 patients (15.3%) with normal BMI, 92 patients (41.4%) who were overweight, 80 patients (36%) with moderate obesity (BMI:30–39.9 kg/m2), and 16 patients (7.2%) with severe obesity (BMI ≥ 40 kg/m2). Overall in-hospital mortality was 20.3%. Patients with moderate obesity had a lower mortality rate (13.8%) than patients with normal weight, overweight or severe obesity (17.6%, 21.7%, and 50%, respectively; P = 0.011. Logistic regression showed that patients with a BMI ≤ 29 kg/m2 (odds ratio [OR] 3.64, 95% CI 1.38–9.60) and those with a BMI > 39 kg/m2 (OR 10.04, 95% CI 2.45–41.09) had a higher risk of mortality than those with a BMI from 29 to 39 kg/m2. The number of comorbidities (≥2), SAPS II score, and P/F < 100 mmHg were also independent predictors for in-hospital mortality.ConclusionsCOVID-19 patients admitted to the ICU with moderate obesity had a lower risk of death than the other patients, suggesting a possible obesity paradox.
Publisher
Nature Publishing Group
Subject
