陈旧性心肌梗死室性早搏与QT离散度及心率变异性的关系  

Relationship among ventricular premature beat and heart rate variability, QT dispersion in patients with old myocar-dial infarction/L

作　　者：李迪俊[1] 林毓群[1] 张云[1] 

机构地区：[1]汕头大学医学院附一院心电图室,广东汕头市515041

出　　处：《心血管康复医学杂志》2005年第1期70-72,共3页Chinese Journal of Cardiovascular Rehabilitation Medicine

摘　　要：目的:探讨陈旧性心肌梗死(OMI)患者室性早搏Lown's分级与QT离散度及心率变异性(HRV)的关系。方法:82例OMI患者,按室性早搏Lown's级别分组:A组:Lown's 1-3级,60例;B组:Lown's 4-5级,22例;检测各组HRV时域指标和QTd,并与正常对照组比较。结果:(1)A组的QTd与正常对照组比较无显著差异(P>0.05);而B组的QTd显著增加,明显大于A组和正常对照组(P<0.01);(2)与正常对照组和A组比较,B组的HRV各项时域参数指标显著降低(P<0.001)。结论:室性早搏Lown's 4-5级OMI患者的QTd明显增大、HRV显著降低;预示其发生恶性室性心律失常的危险性增高。Objective: To understand the relationship among Lown's stratification of ventricular premature beat (VPB) and heart rate variability (HRV), QT dispersion (QTd) in patients with old myocardial infarction (OMI). Methods: A total of 82 patients with OMI were divided two groups according to Lown's stratification of VPB: Group A: Lown's 1-3 stratification, 60 cases; Group B: Lown's 4-5 stratification. 22 cases. Comparing differences of HRV parameters and QTd between two groups and also comparing them with normal group. Results: (1) The QTd was no significantly difference between normal group and group A (P>0. 05); The QTd of group B was much higher than normal group and group A (P<0. 01); (2) Comparing with normal group and group A, HRV parameters of group B significantly decreased (P<0. 001). Conclusion: The QTd obviously increase and HRV parameters significantly decrease in OMI patients with Lown's 4-5 stratification VPB. They prognosticate the risk for malignant ventricular arrhythmias events.

关 键 词：对照组 正常 室性早搏 HRV 陈旧性心肌梗死 OMI 患者 QT离散度 心率变异性 恶性室性心律失常 

分 类 号：R542.22[医药卫生—心血管疾病] R541[医药卫生—内科学]