Fig. 7

Changes of right ventricular function and myocardial work. a Right ventricular global work index (RV GWI); b Right ventricular global work efficiency (RV GWE); c Right ventricular global constructed work (RV GCW); d Right ventricular global wasted work (RV GWW). *p < 0.05; **p < 0.01; ***p < 0.001. red asterisk: 0 ppm group compared to baseline; blue asterisk: 20 ppm group compared to baseline; black asterisk: between groups at specific time-point