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急性心肌梗死恢复期心率震荡和心率变异性的研究 被引量:5

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摘要 目的通过对急性心肌梗死(AMI)恢复期患者心率震荡(HRT)和心率变异性(HRV)时域指标进行分析,探讨其变化机制和临床意义。方法随机选择AMI恢复期患者43例(A组)进行回顾性分析研究;原发性高血压患者35例(B组)和无器质性心脏病38例(C组)作为对照。所有病例均行24h动态心电图检测。结果A组震荡初始(TO)(0.38±1.62%)与B组(1.48±2.08%)、C组(2.40±2.62%)相比,A组明显升高,P<0.0001、0.002;A组SDNN、TI较其它两组明显降低,P<0.0001;PNN50、rMSSDA组与C组相比;A组下降明显,P<0.0001、0.01;与B组相比A组虽有所下降,但统计学无显著性差异,P>0.05。结论AMI恢复期的患者HRT现象明显变钝,甚至这种反应消失,说明HRT对预测心肌梗死患者的危险性具有重要的临床价值;HRV指标尤其是SDNN、TI显著降低,表明HRV下降与心肌梗死有关,HRT可以弥补HRV对预后评估的不准确性。
出处 《实用心电学杂志》 2006年第1期17-18,共2页 Journal of Practical Electrocardiology
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参考文献9

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