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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 relationship between the clinical significance of T wave peak (Tp) and T wave peak - end point (Tep (RR) (1/2)) in patients with acute myocardial infarction (AMI) and its clinical prognosis . Methods: Tpe and Tep (RR) (1/2) were measured and calculated in 186 patients with AMI (AMI group), compared with 100 patients without heart disease (control group). Results: Tpe and Tep (RR) (1/2) in AMI group were significantly higher than those in control group on admission, and were significantly higher in death group than those in survival group. The survival rate in hospitalization group was significantly higher than that on discharge (P <0.01). Tpe and Tep (RR) (1/2) in patients with ventricular tachycardia were significantly higher than those in patients with ventricular premature ventricular contractions and without ventricular arrhythmias (P <0.01). Mortality, multiple myocardial infarction, grade Ⅲ, Ⅳ, ventricular arrhythmia, grade Ⅱ, Ⅲ degree atrioventricular block in patients with Tep (RR) (1/2) ≥150 ms were significantly higher than those in patients with Tep ) (1/2) <150 ms (P <0.01 or <0.05). Conclusion: Tpe has important guiding value in judging the short-term prognosis of AMI patients.