Participants Participants
Age (year) Age (year) 71.4±9.9 71.4±9.9
Men Men 27(54%) 27(54%)
Atrioventricular block Atrioventricular block 38(76%) 38(76%)
Sick sinus syndrome Sick sinus syndrome 4(8%) 4(8%)
Dilated cardiomyopathy Dilated cardiomyopathy 8(16%) 8(16%)
Hypertrophic cardiomyopathy Hypertrophic cardiomyopathy 4(8%) 4(8%)
Ventricular tachycardia Ventricular tachycardia 4(8%) 4(8%)
Coronary atherosclerosis Coronary atherosclerosis 14(28%) 14(28%)
Heart failure 13(26%) 13(26%)
Hypertension 33(66%) 33(66%)
Diabetes 11(22%) 11(22%)
Chronic renal insufficiency 4(8%) 4(8%)
Old cerebral infarction 7(14%) 7(14%)
Preoperative LVEF(%) 58.8±13.9 58.8±13.9
Interventricular septal thickness(mm) 10.5±1.7 10.5±1.7
Left ventricular posterior wall thickness(mm) 9.8±1.3 9.8±1.3
Right ventricular posterior wall thickness(mm) 4.1±0.4 4.1±0.4
Preoperative QRS interval(ms) 124.9±32.6 124.9±32.6
Postoperative QRS interval(ms) 113.4±17.1 113.4±17.1
DDD 40(80%) 40(80%)
ICD 4(8%) 4(8%)
VVIR 4(8%) 4(8%)
CRT 2(4%) 2(4%)