Fig. 3From: The short-term efficacy of high flow nasal oxygen therapy on cardiovascular surgical patients: a randomized crossover trialHFNC vs. VM (physiological data). HFNC, high flow nasal cannula; VM, venture mask; RR, respiratory rate; HR, heart rate; MAP, mean arterial pressure; CCI, continuous cardiac index; SvO2, mixed venous oxygen saturation. Horizontal lines indicate the mean value of each deviceBack to article page