急性心肌梗死患者心电图QTc变化与临床预后

QTc changes of patients with acute myocardial infarction and clinical prognosis study

目的探讨急性心肌梗死患者QTc变化与临床预后的关系。方法分析110例急性心肌梗死（AMI）患者心电图QTc间期和住院期间临床预后。结果72例（65.8％）QTc延长；AMI时不同临床状态下（有无心律失常、衰竭、心源性休克和预后），QTc的值差异均有统计学意义（P〈0．05），恶性心律失常组QTc间期明显长于无心律失常组（P〈0．05）。结论QTc间期延长可作为评估和判断AMI预后的一项重要参考指标。

Objective To explore the QTc changes of patients with myocardial infarction and the relationship with clinical prognosis. Methods We analyzed the 110 electrocardiograms （ECG） of in - hospital patients with acute myocardial infarction and recorded in- hospital adverse cardiac events （arrhythmia, heart failure, cardiogenic shock, death）. Results The QTc of 72 patients （65.8%） was prolonged. The QTc was significantly different between different clinical situations depending on with or without adverse cardiac events （ P 〈 0.05 ）. The QTc of patients with arrhythmia was more longer than without arrhythmia （ P 〈 0. 05）. Conclusion QTc can be a very important marker to evaluate the prognosis of patients with myocardial infarction.