Fig. 4From: A pilot study of improvised CPAP (iCPAP) via face mask for the treatment of adult respiratory distress in low-resource settingsAirway pressure over time. Graphs reflect expiratory pressure (EP) and inspiratory pressure (IP) during the sampled periods within the first 5 min (0–5) and last 5 min (25–30) of each trial. Each line represents a single participantBack to article page