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- W2390830146 abstract "Objective To assess the effect of different right ventricular pacing sites on cardiac function by echocardiography.Methods Thirty-eight patients with sick sinus syndrome and high-degree atrioventricular block were randomized to right ventricular apex(RVA) pacing group and right ventricular outflow tract(RVOT) pacing group.The changes of left ventricular diameter(LVDd),left ventricular ejection fraction(LVEF),E/Ea,Tei index were collected to evaluate the feasibility of RVOT pacing;meanwhile the correlation between QRS duration and Tei index was also analysed.Results Compared with pre-implantation,LVDd increased and LVEF decreased in RVA pacing,but there were no significant changes in RVOT pacing.RVOT pacing were better in E/Ea 12 and 18 months after the operation(10.21±2.53 8.4±2.24,10.74±2.64 8.61±2.16, 0.01),and there were significant differences in Tei index(0.67±0.15 0.56±0.14,0.68±0.15 0.57±0.13, 0.01).The QRS duration was significantly changed after ventricular pacing both in RVA pacing and RVOT pacing,but the increasment in RVA pacing was more than RVA pacing(49.27±14.74 32.6±11.03, 0.01).The QRS duration had a positive relationship with Tei index(=0.584, 0.01).Conclusions Compared with RVA pacing,RVOT pacing can provide smaller variation in the duration of QRS complex,LVDd,LVEF,E/Ea and Tei index.RVOT pacing can also slow down the deterioration of cardiac function.Conventional echocardiography can provide a better option for pacing location on clinical pacing therapy." @default.
- W2390830146 created "2016-06-24" @default.
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- W2390830146 date "2012-01-01" @default.
- W2390830146 modified "2023-09-28" @default.
- W2390830146 title "Effect of different right ventricular pacing sites on long-term cardiac function" @default.
- W2390830146 hasPublicationYear "2012" @default.
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