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Fig. 4 | BMC Anesthesiology

Fig. 4

From: 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 study

Fig. 4

Prediction of NIV failure after 48 h basing on gas exchange and respiratory pattern parameters (ROC curves). A PaO2/FiO2. B Respiratory Rate. C ROX index. D End-tidal carbon dioxide. E Alveolar dead space to tidal volume ratio. F Patrick score. 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

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BMC Anesthesiology

ISSN: 1471-2253

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