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房室结慢径消融术对AVNRT患者冠状静脉窦电生理的影响 被引量:1

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摘要 目的:探讨房室结折返性心动过速(AVNRT)患者房室结慢径消融术前、后冠状静脉窦(CS)电生理的改变。方法:48例均经心内电生理检查确诊为AVNRT患者,分别测量房室结慢径消融术前、后CS近端(CSp)CS9~10,CS中端(CSm)CS5~6,CS远端(CSd)CS1~2的有效不应期(ERP),应用程序刺激S1S1500,400,350,300,280 ms分别起搏CSp及CSd,分别测量CSp^CSd及CSd^CSp的A波传导时间。结果:(1)房室结慢径消融术前、后CS不同部位的ERP分别为CSp(213.75±24.98)ms,(223.54±16.44)ms(P<0.000 01);CSm(222.71±22.67)ms,(230.00±14.14)ms(P<0.001);CSd(229.17±36.83)ms,(235.83±22.86)ms(P<0.05)。CS的ERP离散度分别为(26.88±25.94)ms,(20.83±13.81)ms(P<0.05)。(2)应用程序刺激S1S1500,400,350,300,280ms分别起搏CSp及CSd,分别测量房室结慢径消融术前、后CSp^CSd及CSd^CSp的A波传导时间,差异均无统计学意义(均P>0.05)。结论:AVNRT患者房室结慢径消融术前、后CSp,CSm,CSd的ERP均延长,CS的ERP离散度减小,而CS的A波传导时间无明显改变,可能与房室结慢径消融术导致的迷走神经功能改变有关。
出处 《广西医科大学学报》 CAS 2015年第1期101-103,共3页 Journal of Guangxi Medical University
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