不稳定性心绞痛心率变异性与QT离散度分析

Analysis of unstable angina pectoris heart rate variability and QT interval dispersion

目的 探讨心率变异性 (HRV )和 QT离散度 (QTd)与不稳定性心绞痛 (UAP)的关系。方法 测定 U AP组 (6 4)例 )和健康对照组 (30例 )的 HRV6项时域指标及与 QTd、校正的 QTd(QTcd) ,并作对比分析。结果 UAP患者的 2 4小时时域指标及 QTd、QTcd健康对照组比较均有非常显著差异 (P<0 .0 0 1或 P<0 .0 1)。结论 HRV与 QTd检测是判定 UAP患者心肌缺血、自主神经功能损害程度及预测预后的较有价值的无创性检测手段。

Objective To study the relationship of heart rate variability(HRV) and QT interval dispersion(QTd) and unstable angina pectoris(UAP).Methods to test HRV six indexes QTd,corrective QTd (QTcd) between UAP subjects (64 cases) and healthy subjects(30 cases),and analysis them too.Results The 24 hours time zone indexes and QTd、QTcd of UAP patients are lower than healthy subjects obviously(mean P <0.001 or P< 0.01).Conclusion To detect HRV and QTd is a valuable,harmless detective way of judging UAP patients myocardial ischemia,the harm extent about autonomic nervous functions and forecasting prognosis.