微伏级T波电交替与急性心肌梗死患者恶性心律失常的相关性研究

Microvolt T Wave Alternans and Acute Myocardial Infarction in Patients with Malignant Arrhythmia Correlation Research

目的评估微伏级T波电交替与急性心肌梗死(AMI)患者恶性心律失常的相关性。方法入选89例AMI患者,并根据住院期间是否发生恶性心律失常分为恶性心律失常亚组及无恶性心律失常亚组,另选来我院健康体检的非心肌梗死患者80例入选对照组,对比分析其MTWA最大值、LVEF、心率变异性SDNN值。结果急性心肌梗死组MTWA最大值高于对照组,而LVEF值、心率变异性SDNN值低于对照组。急性心肌梗死两亚组间比较,恶性心律失常亚组MTWA最大值高于无恶性心律失常亚组,而LVEF值、心率变异性SDNN值低于无恶性心律失常亚组。差异有统计学意义(P>0.05)。结论 MTWA最大值、LVEF和心率变异性与AMI患者住院期间恶性心律失常的发生有相关性,可用于AMI患者的危险分层。

Objective Research microvolt T wave altemans and acute myocardial infarction patients with malignant arrhythmia correlation. Methods 89 cases AMI patients, according to whether the occurrence of malignant arrhythmia during hospitalization for malignant arrhythmias subgroup and no malignant arrhythmia subgroup, at the same time, choice of health examination for patients with myocardial infarction in 80 cases in control group, comparative analysis of the maximal value of MTWA, LVEF, heart rate variability/ SDNN value. Results The maximal value of MTWA of acute myocardial infarction group is higher than that of the control group, while the LVEF value, heart rate variability/SDNN value lower than that of control group. Acute myocardial infarction in two sub groups, malignant arrhythrnia subgroup MTWA maximum value is higher than that without malignant arrhythmias subgroup, and the LVEF values, heart rate variability below/SDNN value lower than that of control group. There were significant differences （ P 〉 0.05）. Conclusions The maximum MTWA, LVEF and heart rate variability in the patients with AMI during hospitalization of malignant arrhythmia have very big dependency, hopeful as predictive markers for risk stratification of patients on AMI.