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肥厚型心肌病病人心率变异性及心律失常分析 被引量:6

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摘要 目的探讨肥厚型心肌病病人心率变异性及心律失常的情况。方法入选非梗阻性肥厚型心肌病(nonobstructive hypertrophic cardiomyopathy,NOHCM)病人30例,梗阻性肥厚型心肌病(hypertrophic obstructive cardiomyopathy,HOCM)病人25例,健康正常者40名为对照组。通过24 h动态心电图,比较3组心率变异性时域指标及心律失常的差异,心率变异性时域指标包括24h全部窦性R-R间期标准差(SDNN)、每5 min窦性R-R间期均值的标准差(SDANN)、24 h内连续5 min窦性R-R间期标准差的均值(SDNN Index)、所有邻近窦性R R间期差值的均方根(r MSSD)、相邻两个窦性R-R间期差值大于50 ms的心搏数占全部心搏数的百分比(PNN50)。结果与对照组相比较,HOCM组及NOHCM组的心率变异性各指标均显著降低,其差异有统计学意义(P<0.05);HOCM组在心率变异性指标SDNN、SDANN、SDNN-Index、PNN 50上低于NOHCM组,其差异有统计学意义(P<0.05)。rMSSD在HOCM组及NOHCM组之间差异无统计学意义(P>0.05)。HOCM组及NOHCM组的各项心律失常发生率均高于对照组(P<0.05)。频发房性早搏、频发室性早搏、成对室性早搏、多源室性早搏、R on T现象、房性心动过速、室性心动过速的发生率在HOCM组均高于NOHCM组(P<0.05)。房室传导阻滞的发生率在HOCM组与NOHCM组之间差异无统计学意义(P>0.05)。结论 HOCM病人心率变异性显著降低,提示交感神经与迷走神经功能平衡降低,心律失常发生率增加,特别是房性、室性心律失常发生率明显增加。
作者 付生弟
出处 《中西医结合心脑血管病杂志》 2016年第13期1549-1551,共3页 Chinese Journal of Integrative Medicine on Cardio-Cerebrovascular Disease
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