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冠心病患者心率变异性的功率谱分析 被引量:3

Power spectral analysis of heart variability in patients with coronary heart disease
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摘要 目的 :比较不同类型冠心病患者心率变异性的差异 ,探讨心率变异性的频谱分析在缺血性心脏病诊断中的作用。方法 :对经冠状动脉造影证实的冠心病患者进行分组分析 ,比较各组间 RR、PR间期时域、频域差异。频域分析采用短时程心电信号经快速傅立叶转换成频域函数后进行。低频定义为 0 .0 4~ 0 .1 5 Hz,高频定义为 0 .1 5~ 0 .4Hz,并对其功率进行标准化。结果 :心绞痛组、心梗组 RR间期频谱低频成分明显高于正常组 ,而心梗组低频成分明显高于心绞痛组 ,心绞痛组、心梗组高频成分明显低于正常组而心梗组高频成分明显低于心绞痛组 ;心绞痛组、心梗组 PR间期频谱低频成分显著高于正常组而心绞痛组、心梗组无显著差异 ,心绞痛组、心梗组高频成分显著低于正常组而心绞痛组、心梗组无明显差异。结论 :PR、RR间期频谱低频、高频改变与冠脉血管病变密切相关 。
出处 《陕西医学杂志》 CAS 北大核心 2003年第4期324-326,共3页 Shaanxi Medical Journal
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同被引文献17

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