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Annals of Intensive Care
Fig. 2 | Annals of Intensive Care

Fig. 2

From: Effects of CPAP and FiO2 on respiratory effort and lung stress in early COVID-19 pneumonia: a randomized, crossover study

Fig. 2

Effects of positive pressure on respiratory effort and lung stress. Differences in respiratory effort (A), dynamic B, static C and total lung stress D between NRB and Helmet-CPAP in COVID-19 patients and Healthy subjects. Of note, measurement of airway pressure was missing in one patientBlack dots: single patients; Red bars: mean values; NRB Non-rebreather mask

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