Older COVID-19 patients with higher APACHE II scores on admission, those who developed AKI grades II or III and/or septic shock during ICU stay had an increased risk-of-death. ICU mortality was 31%.

A total of 663 patients were included.

Overall ICU mortality was 31% (203 patients).

At ICU admission non-survivors were more hypoxemic and with higher sequential organ failure assessment score.

Complications were more frequent in non-survivors: acute respiratory distress syndrome (ARDS), acute kidney injury (AKI), shock, and arrhythmias.

Respiratory super-infection, bloodstream infection and septic shock were higher in non-survivors, respectively.

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