急性心肌梗死T波峰-末间期的临床意义

Clinical significance of T peak-T end interval in patients with acute myocardial infarction

目的:探讨急性心肌梗死(AMI)患者T波峰-末间期(Tpe)及校正心率后的T波峰-末间期(Tep(RR)(1/2))的临床意义与近期临床预后的关系。方法:测量并计算186例AMI患者(AMI组)的Tpe和Tep(RR)(1/2),与100例无心脏病健康者(对照组)进行比较。结果:入院时AMI组Tpe和Tep(RR)(1/2)显著高于对照组,死亡组显著高于生存组,生存组入院时显著高于出院时(P<0·01)。室性心动过速组Tpe和Tep(RR)(1/2)明显高于室性期前收缩组和无室性心律失常组(P<0·01)。Tep(RR)(1/2)≥150ms者病死率、多发心肌梗死、心功能Ⅲ、Ⅳ级、室性心律失常、Ⅱ、Ⅲ度房室传导阻滞的发生率均明显高于Tep(RR)(1/2)<150ms者(P<0·01或<0·05)。结论:Tpe对判断AMI患者的近期预后具有重要的指导价值。

Objective：To investigate the clinical significances of T peak-T end interval （Tpe） before and after correcting heart rate （Tep√RR（1/2）） in patient with acute myocardial infarction （AMI） and its relationship to the short term prognosis.Methods：Tpe and Tep√RR（1/2） from 186 cases of patients with AMI were measured and counted. They were compared to those from 100 healthy people （controls）. Results：Tpe and Tep√RR（1/2） of the AMI patients admitted to hospital were apparently higher than those of the controls （P〈0.01）. Furthermore, in AMI group, Tpe andTepRR of the patients who died later were obviously higher than those of the survived ones （P〈0.01）. And in the survived patients, Tpe and Tep√RR（1/2） were also found higher at the time of admission than that of discharge （P〈0.01）. For the patients with Tep√RR（1/2） ≥150 ms, the incidences of death, multiple infarction, pump function decreased to Ⅲ-Ⅳ classes, ventricular arrhythmia and Ⅱ-Ⅲ OA-V Block were markedly higher than those with Tep√RR（1/2）〈 150 ms （P〈0.05 or P〈0.01）.Conclusion：Tpe has a short term prognostic value in patients with acute myocardial infarction.