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Fig. 5 | Critical Care

Fig. 5

From: Helmet CPAP to treat hypoxic pneumonia outside the ICU: an observational study during the COVID-19 outbreak

Fig. 5

Helmet CPAP failure at 28 days. Probability of helmet CPAP failure at 28 days is presented stratifying the same population of patients depending on PaO2/FiO2 ratio measured either during standard oxygen (panel a) or during helmet CPAP (panel b). While a PaO2/FiO2 ratio below 100 mmHg with standard oxygen therapy is a weak predictor of failure (50% probability), showing the same oxygenation impairment during helmet CPAP is associated with a high probability of failure (80%, P < 0.001 by Log Rank for both)

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