Association Between Peripheral Blood Oxygen Saturation (SpO 2)/Fraction of Inspired Oxygen (FiO 2) Ratio Time at Risk and Hospital Mortality in Mechanically Ventilated Patients

INTRODUCTION: Acute respiratory failure requiring mechanical ventilation is a leading cause of mortality in the intensive care unit. Although single peripheral blood oxygen saturation/fraction of inspired oxygen (SpO2/FiO2) ratios of hypoxemia have been evaluated to risk-stratify patients with acute respiratory distress syndrome, the utility of longitudinal SpO2/FiO2 ratios is unknown. OBJECTIVE: To assess time-based SpO2/FiO2 ratios