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Fig. 1 | Critical Care

Fig. 1

From: The application of an oxygen mask, without supplemental oxygen, improved oxygenation in patients with severe COVID-19 already treated with high-flow nasal cannula

Fig. 1

Outcome. Mean oxygen saturation from arterial blood (SaO2) at baseline and with mask (a). Mean partial pressure of carbon dioxide (PaCO2) at baseline and with mask (b). Mean peripheral saturation from pulsoximetry (SpO2) at baseline, with mask and after mask removal (c) error bars = 95% confidence interval of the mean. *** = p < .001 from two-sided paired t test. Paired nonparametric tests were also performed to test robustness, with a similar degree of statistical significance (p < .001)

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Critical Care

ISSN: 1364-8535