Echocardiographic parameters of mice with ischemia-induced heart failure. Representative M-mode measurement (A) and echocardiographic results of left ventricular end-diastolic diameter (LVEDD) (B), end-systolic diameter (LVESD) (C), and ejection fraction (LVEF) (D) in the various treatment groups. Measurements made 1 week after surgery for sham groups and 1 week and 4 weeks after surgery for the MI groups. n = 8-10 for all treatment groups. *p<0.01, MI+saline versus sham + saline; #p<0.05, ##p<0.01, MI+NaHS versus sham+NaHS. NaHS, sodium hydrosulfide; MI, myocardial infarction; NS, not significant; w, week.