Right Ventricular Apical Pacing Impairs Left Ventricular Twist as Well as Synchrony: Acute Effects of Right Ventricular Apical Pacing
Right Ventricular Apical Pacing Impairs Left Ventricular Twist as Well as Synchrony: Acute Effects of Right Ventricular Apical Pacing
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DOI：
10.1016/j.echo.2009.05.001
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发表时间：
2009-08-01
影响因子：
6.5
通讯作者：
Yamada, Yoshio
中科院分区：
文献类型：
--
作者：
Matsuoka, Ken;Nishino, Masami;Yamada, Yoshio
背景资料：本研究的目的是比较旋转的左心室（LV）的顶点和底部，LV同步之间的LV心尖和基底旋转，LV扭转，改变从固有的房室传导到右心室心尖（RVA）pacemaking.Methods：连续30例患者病窦综合征谁经历了DDD起搏器植入进行了研究。从固有房室传导改变为RVA起搏，评估了对超声心动图参数的急性影响，包括LV旋转和扭转以及LV顶部-底部旋转延迟。RVA起搏时，左室心尖部和基底部的峰旋转值以及左室扭转值均显著低于内源性房室传导时（分别为P = .007、P = .003和P < .0001）。RVA起搏时心尖-基底旋转延迟显著长于固有房室传导（P =.结论：右室心尖部起搏降低了左室心尖部和基底部旋转，导致左室心尖部-基底部旋转延迟，从而损害左室扭转。（J Am Soc Echocardiogr 2009; 22：914-9.）
Background: This study was designed to compare the rotation of the left ventricular (LV) apex and base, LV synchrony between LV apical and basal rotation, and LV twist, changing from intrinsic atrioventricular conduction to right ventricular apical (RVA) pacing.Methods: Thirty consecutive patients with sick sinus syndrome who had undergone DDD pacemaker implantation were studied. Changing from intrinsic atrioventricular conduction to RVA pacing, the acute effect on echocardiographic parameters, including LV rotation and twist and LV apical-basal rotation delay, was assessed.Results: During RVA pacing, values of peak rotation in the LV apex and base and LV twist were significantly lower than during intrinsic atrioventricular conduction (P = .007, P = .003, and P < .0001, respectively). Apical-basal rotation delay during RVA pacing was significantly longer than during intrinsic atrioventricular conduction(P =. 02).Conclusions: RVA pacing decreases apical and basal LV rotation and induces LV apical-basal rotation delay, resulting in impairment of LV twist. (J Am Soc Echocardiogr 2009; 22: 914-9.)