Clinical Outcomes and Independent Risk Factors for 90-day Mortality in Critically-ill Patients Infected with SARS CoV-2: A Multicenter Study in Turkish Intensive Care Units

Abstract

PurposeThere are limited data on long-term outcome of COVID-19 from different parts of the world. The aim of this study was to determine risk factors of 90-day mortality in critically-ill patients infected with SARS-CoV-2 in Turkish ICUs. MethodsPatients with COVID-19 from26 ICUs in Turkey were included in the study. Demographics, clinical characteristics, laboratory variables, treatment, and survival data were recorded. ResultsA total of 421 patients were included. The median age was 67 (IQR: 57-76) years, and 251 patients (59.6%) were men. 90-day mortality rate was 55.1%. Factors independently associated with 90-day mortality were invasive mechanical ventilation (HR 4.09 [95% CI: 2.20-7.63]), lactate level > 2 mmol/L (2.78 [1.93-4.01]), age ≥ 60 years (2.45 [1.48-4.06)]), cardiac arrhythmia during ICU stay (2.01 [1.27-3.20]), vasopressor treatment (1.94 [1.32-2.84]), positive fluid balance of ≥ 600 ml/per day (1.68 [1.21-2.34]), PaO2/FiO2 ratio of ≤ 150 mmHg (1.66 [1.18-2.32], and ECOG score ≥ 1 (1.42 [1.00-2.02]. ConclusionThis study has shown that long-term mortality was high in critically-ill COVID-19 patients in Turkish ICUs. Invasive mechanical ventilation, high lactate level, older age, presence of cardiac arrhythmia, need for vasopressor treatment, positive fluid balance, severe hypoxemia and not having fully-active performance were related with mortality.