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Fig. 1 | Critical Care

Fig. 1

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

Fig. 1

PaO2/FiO2 ratio increase with helmet CPAP therapy. The number of patients showing severe and moderate-to-severe gas exchange impairment is reduced shortly after start of helmet CPAP therapy (P < 0.001 by Chi-Square, panel a). PaO2/FiO2 ratio increase was higher among patients showing a more severe gas exchange impairment (P < 0.001 for helmet CPAP effect and for its interaction with severity class by RM Anova, panel b)

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Critical Care

ISSN: 1364-8535