On echocardiography performed at baseline and post treatment ( median 1.16 days ) , final left ventricular volumes were lower in the ivabradine group both for left ventricular end-diastolic volume ( LVEDV ) ( 87.1 28.2 vs 117.8 21.4 ml , p = 0.01 ) and left ventricular end-systolic volume ( LVESV ) ( 42.5 19.0 versus 59.1 11.3 ml , p = 0.03 ) without differences in volume change or left ventricular ejection fraction .