On echocardiography performed at baseline and post treatment ( median @ days ) , final left ventricular volumes were lower in the ivabradine group both for left ventricular end-diastolic volume ( LVEDV ) ( @ @ vs @ @ ml , p = @ ) and left ventricular end-systolic volume ( LVESV ) ( @ @ versus @ @ ml , p = @ ) without differences in volume change or left ventricular ejection fraction .