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右室心尖部起搏和右室流出道起搏最佳房室延迟的比较

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摘要 目的:对右室流出道(RVOT)起搏的房室延迟(AVD)优化进行探讨,并对RVOT起搏与右室心尖部(RVA)起搏患者的最佳AVD进行比较。方法:入选因高度或Ⅲ度房室传导阻滞植入DDD起搏器的患者50例,其中RVA起搏组25例,RVOT起搏组25例。通过心脏超声测得主动脉血流速度时间积分(AVTI)及左室充盈时间(LVFT),以产生最大的AVTI及最长的LVFT对应的AVD为最佳的AVD。结果:以AVTI优化AVD后,RVA起搏组[(22.57±5.00)cmvs(25.05±4.45)cm,P<0.001]及RVOT组[(21.99±4.78)cmvs(25.18±4.37)cm,P<0.001]的AVTI均增加,两组的AVTI增加量差异无显著性[(2.50±1.86)cmvs(3.14±1.45)cm,P>0.05]。以LVFT优化AVD后,RVA起搏组[(22.57±5.00)cmvs(24.34±4.12)cm,P<0.001]及RVOT组[(21.99±4.78)cmvs(24.88±3.84)cm,P<0.001]的AVTI也均增加,两组的AVTI增加量差异也无统计学意义[(1.89±1.74)cmvs(2.03±1.58)cm,P>0.05]。直线相关分析显示,AVTI优化的AVD与LVFT优化的AVD显著相关(R=0.79,P<0.0001),但AVTI优化的AVD比LVFT优化的AVD明显长[(134.63±34.46)msvs(114.30±31.28)ms,P<0.001]。RVA起搏组及RVOT起搏组AVTI优化的AVD差异无显著性[(136.47±39.36)msvs(132.78±29.64)ms,P>0.05],LVFT优化的AVD也无统计学差异[(119.23±35.03)msvs(109.36±27.35)ms,P>0.05]。结论:AVD优化能使RVA起搏和RVOT起搏患者均获益,RVOT起搏与RVA起搏相比最佳的AVD差异无显著性。
作者 陈大祥 陈超
出处 《实用医学杂志》 CAS 北大核心 2012年第13期2251-2253,共3页 The Journal of Practical Medicine
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参考文献7

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