Fig. 4
From: Coronary stenosis is a risk marker for impaired cardiac function on cardiopulmonary exercise test
Distribution of abnormal pathophysiological patterns in different groups. Note : With healthy participants as controls, the abnormal pathophysiological patterns were compared in different groups. Low SV was defined as low VO2 peak or low VO2/WR slope or low VO2/HR; inefficient pulmonary gas change was defined as high VE/VCO2 or high Vd/Vt. In healthy participants, the mean value of VO2 peak was 21.61ml/min/kg, and the mean value of VO2/WR slope was 8.77, and the mean value of VO2/HR peak was 9.52, and the mean value of VE/VCO2slope was 25.56, and the mean value of Vd/Vt peak was 0.19