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Annals of Intensive Care
Fig. 3 | Annals of Intensive Care

Fig. 3

From: Continuous positive airway pressure for respiratory support during COVID-19 pandemic: a frugal approach from bench to bedside

Fig. 3

Clinical study. Flowchart of the study. COVID-19-related AHRF was defined as acute dyspnea (with a respiratory rate > 25 breaths/min and/or active contraction of accessory respiratory muscles), with escalating oxygen therapy ≥ 6 L/min with a non-rebreather facemask to maintain SpO2 > 90%, and new pulmonary infiltrates on chest X-rays [5] in a patient diagnosed with COVID-19. FF-CPAP filter frugal continuous positive airway pressure (see text for definition).

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