Fig. 5From: Breathing pattern, accessory respiratory muscles work, and gas exchange evaluation for prediction of NIV failure in moderate-to-severe COVID-19-associated ARDS after deterioration of respiratory failure outside ICU: the COVID-NIV observational studyPrediction of NIV failure after 48 h basing on gas exchange and respiratory pattern parameters (Odds ratios). Data presented as odds ratio and 95% confidence interval. Abbreviations: PaO2- partial pressure of oxygen in arterial blood; FiO2—inspiratory oxygen fraction; VDalv—alveolar dead space; VT- tidal volume; PetCO2- end-tidal partial pressure of carbon dioxide, RR—respiratory rateBack to article page