All Roads Lead to Rome: Results of Non-Invasive Respiratory Therapies Applied in a Tertiary-Care Hospital Without an Intermediate Care Unit During the COVID-19 Pandemic

Introduction: Non-invasive respiratory therapies (NRT) were widely used in the first wave of the COVID-19 pandemic in different settings, depending on availability The objective of our study was to present 90-day survival and associated factors in patients treated with NRT in a tertiary hospital without an Intermediate Respiratory Care Unit The secondary objective was to compare the outcomes of the different therapies Methods: Observational study of patients treated with NRT outside of an intensive care or intermediate respiratory care unit setting, diagnosed with COVID-19 and acute respiratory distress syndrome by radiological criteria and SpO2/FiO2 ratio A multivariate logistic regression model was developed to determine independently associated variables, and the outcomes of high flow nasal cannula and continuous positive airway pressure were compared Results: In total, 107 patients were treated and 85 (79 4%) survived at 90 days Before starting NRT, the mean SpO2/FiO2 ratio was 119 8 ± 59 4 A higher SOFA score was significantly associated with mortality (OR 2,09;95% CI 1 34-3 27), while self-pronation was a protective factor (OR 0 23;95% CI 0 06-0 91) High flow nasal cannula was used in 63 subjects (58 9%), and continuous positive airway pressure in 41 (38 3%), with no differences between them Conclusion: Approximately 4 out of 5 patients treated with NRT survived to 90 days, and no significant differences were found between high flow nasal cannula and continuous positive airway pressure