The Protective Role of the Ratio of Arterial Partial Pressure of Oxygen and Fraction of Inspired Oxygen after Re-Supination in the Survival of Patients with Severe COVID-19 Pneumonia.

Background: The role of the ratio between the arterial partial pressure of oxygen and the inspired fraction of oxygen (PaO/FiO ratio) during the change in position is not fully established.

Methods: This retrospective, single-center cohort study included 98 patients with severe COVID-19 pneumonia.

Objective: This study aimed to evaluate the predictive value of the PaO/FiO ratio for survival in patients with severe COVID-19 pneumonia between changing from supine to prone positions and .

Acute kidney injury and mortality in patients with critical COVID-19 in Mexico: case-control study.

Objective: We aimed to test the association between acute kidney injury (AKI) and mortality in critically ill patients with Coronavirus disease 2019 (COVID-19).

Method: We conducted a single-center case-control study at the intensive care unit (ICU) of a second-level hospital in Mexico. We included 100 patients with critical COVID-19 from January to December 2021, and collected demographic characteristics, comorbidities, APACHE II, SOFA, NEWS2, and CO-RADS scores at admission, incidence of intrahospital complications, length of hospital and ICU stay, and duration of mechanical ventilation, among others.