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目的探讨急性心肌梗死(AMI)患者心率震荡(HRT)现象的特征及临床意义。方法测量和比较45例急性心肌梗死患者(AMI组)及35例健康者(对照组)窦性心率震荡初始(TO)及震荡斜率(TS)。结果 AMI组患者震荡初始(TO)较对照组增加(P<0.05),震荡斜率(TS)减低(P<0.001),TO及TS异常发生率高于对照组。TO及TS无相关性。结论心率震荡可能有预测心肌梗死患者发生恶性心律失常及心脏性猝死的作用。
Objective To investigate the characteristics and clinical significance of heart rate turbulence (HRT) in patients with acute myocardial infarction (AMI). Methods The sinusoidal heart rate (TO) and concussion slope (TS) were measured and compared in 45 patients with acute myocardial infarction (AMI group) and 35 healthy controls (control group). Results Compared with the control group, the TOI in the AMI group increased (P <0.05) and the concussion slope (TS) decreased (P <0.001). The incidence of TO and TS abnormalities in AMI group was higher than that in the control group. TO and TS no correlation. Conclusion Heart rate turbulence may predict malignant arrhythmia and sudden cardiac death in patients with myocardial infarction.