急性心肌梗死患者心率变异性及QT离散度变化分析

ANALYSIS OF THE CHANGES OF ACUTE MYOCARDIAL INFARCTION PATIENTS' HEART RATE VARIABILITY AND QT INTERVAL DISPERSION

目的 探讨急性心肌梗死 (AMI)患者 1周内及半年后心率变异性 (HRV)及QT离散度 (QTd)的改变。方法 选择 4 0例AMI患者 1周内及半年后做 2 4小时HRV6项时域指标分析及 12导联同步QTd分析 ,并与健康对照组 (4 0例 )进行对比观察。结果 AMI1周内与半年后HRV显著降低 ,与健康对照组比较有显著意义 (P <0 0 1) ,AMI1周内QTd明显长于半年后及健康对照组 ,对比有显著意义 (P <0 0 1)。结论 HRV及QTd检测可作为判断AMI预后的无创伤性检测手段 ,AMI1周内及半年后HRV明显低于健康对照组 ,故AMI患者半年后仍是发生心源性猝死的高危人群。

Objective To study the changes of AMI patients' HRV and QTd within a week and six months later. Methods To test AMI patients' (40 cases) 24 hours HRV six indexes and QTd of 12-lead simultaneous recording of ECG within a week and six months later, and observe it compared with healthy subjects (40 cases). Results AMI patient's HRV is obviously low within a week and six months later, with significant difference than healthy subjects (P<0.01). AMI patients' QTd within a week is longer than six months later, the comparison is meaningful (P<0.01). Conclusion To detect HRV and QTd is a harmless detective way of forecasting prognosis. AMI patients' HRV within a week and six months later is lower than healthy subjects. So AMI patients six months later are still a group of high dangerous people to sudden cardiac death.