摘要
Abstract
Objective Toexploretheeffectsofrightventricularoutflowtract(RVOT)septumpacingandrightven-tricularapexonleftventriclefunctioninelderlypatientswithsichsinussyndrome(SSS).Methods Thedataof65SSSelderly patients,including 40 males,25 females,aged 62 ~76 years,meanly(70. 6 ± 10. 8)years old,admitted to Department of Cardiology,Central Hospital of Songjiang District from march 2012 to march 2013 were analyzed retrospectively,and divided, according to sites of right ventricular pacing,into groups RVOT(n=33),RVA(n=32). QRS wave time limit before,dur-ing operation,6 months after operation,left ventricle function indicators〔left ventricular end diastolic diameter( LVEDD), left ventricle end systolic diameter(LVESD),left ventricular ejection fraction(LVEF)〕before operation and 6 months after operation,accumulative total right ventricular pacing percentage 6 months after operation were compared between 2 groups. Re-sults TheQRSwavetimelimitafteroperationwassignificantlydifferentfromthat6monthsafteroperationbetween2groups(P﹤0. 05). There was no difference in QRS wave limit between 2 groups(P﹥0. 05),QRS wave limit was shorter in group RVOT than in RVA group during operation,6 months after operation(P﹤0. 05). Accumulative total right ventricular pacing percent-age of RVOT group was(56 ± 44)%,that of RVA group was(53 ± 46)% 6 months after operation,the difference was not sig-nificant(t=0. 735,P=0. 962). There was no difference in LVEDD,LVESD,LVEF between 2 groups before operation(P﹥0. 05). LVEDD was greater,LVEF lower in RVA group than in RVOT group 6 months after operation(P﹤0. 05). There was no difference in LVEDD,LVESD,LVEF between pre-operation,6 months after operation in RVOT group(P﹥0. 05). LVEDDwasgreater,LVEFlower6monthsafteroperationthanbeforeoperationingroupRVA(P﹤0.05).Conclusion RV-OT is superior to RVA in protection of left ventricle function,which provides a basis for clinical choice of pacing sites.关键词
右室流出道/右室心尖部/心脏起搏/心室功能,左/病态窦房结综合征Key words
Rightventricularoutflowtract/Rightventricularapical/Cardiacpacing/Ventricularfunction,left/Sick sinus syndrome分类
医药卫生
