急性心肌梗死窦性心率震荡与恶性室性心律失常关系的探讨

目的:探讨急性心肌梗死窦性心率震荡(HRT)与发生恶性室性心律失常的关系。方法:入选58例急性心肌梗死患者,计算震荡初始(TO)、震荡斜率(TS)。按室性期前收缩的Lown分级分为观察组28例与对照组30例。根据HRT表现形式(异常及明显异常)分析其与恶性室性心律失常发生的关系。结果:观察组TO 2.52(1.97,3.21)%、TS 0.81(0.39,1.28)ms/RR与对照组TO 1.01(0.46,1.71)%、TS 1.89(1.48,2.12)ms/RR比较,差异均有统计学意义(P<0.05)。HRT明显异常者恶性室性心律失常发生概率(82.35%)明显高于HRT异常者(14.63%)(P<0.01)。结论:急性心肌梗死患者HRT明显异常,发生恶性室性心律失常的概率增高。

The Relationship between Heart rate turbulence and Malignant Ventricular Arrhythmia in Patients with Acute Myocardial Infarction

Objective To evaluate the relationship between Heart rate turbulence（HRT） and malignant ventricular arrhythmia（VA） in patients with acute myocardial infarction（AMI）.Methods Fifty-eight patients with AMI were selected,turbulence onset（TO） and turbulence slope（TS） were calculated.According to the Lown classification of ventricular premature beat were divided into the observation group（n=28） and control group（n=30）.The relation of HRT and malignant ventricular arrhythmia（VA） was analyzed according to the HRT manifestation（abnormal and obviously abnormal）.Results The observation group TO：2.52（1.97,3.21）%,TS：0.81（0.39,1.28）ms/RR and To：1.01（0.46,1.71）%,TS：1.89（1.48,2.12）ms/RR in the control group,there were signiflcantly different between the observation group and the control group（P0.05）.Malignant VA occurred more frequently in patients with obviously abnormal HRT than those with abnormal HRT（82.35% and 14.63%,P0.05）.Conclusion The incidence of malignant VA increases with increased obviously abnormal HRT in patients with AMI.