期前收缩后心肌复极异常的临床意义探讨

Research and discussion on unusual changes of irregular myocardium repolarization after ventricular premature beats and their clinical significance

目的探讨期前收缩后心肌复极异常的临床意义。方法分析247例期前收缩后心肌复极的变化情况。结果期前收缩后伴与不伴有心肌复极异常的病因 ,心血管病分别为68/78例与58/169例 ,其中冠心病分别38/78例与18/169例 ,差异均有非常显著性意义 (P<0.01) ,冠心病期前收缩后T波倒置加深、ST段改变、T波改变伴ST段和/或U波异常较其它各疾病组明显增高 ,差异均具有显著性意义 (P<0.05) ;频发与偶发室上性期前收缩及室性期前收缩所出现的各类型心肌复极异常差异均无显著性意义 (P>0.05)。结论期前收缩后伴心肌复极异常主要见于心血管疾病 ,可提示为器质性期前收缩 ,有助于与功能性期前收缩相鉴别 。

Objective To reveal clinical significance and its causes of myocardium repolarization. Methods We analyzed 247 cases of unusual changes of myocardium repolarization after ventricular premature beats. Results Among 78 patients with irregular myocardium repolarization there were 68 with cardioangiopathy,and 38 who suffered from coronary artery disease and among 169 patients without irregular myocardium repolarization there were 58 with cardioangiopathy,and 18 who had coronary artery disease,comparision of two groups were quite different(P<0.01),so it could obvionsly seen that ,deepening of inverted T wave and ST segment and/or irregular U wave are frequency(P<0.05)compared to those above.All types of myocardium repolarization were statistically same,whether supraventricular premature beats and ventricular premature beats occurred frequently or accidently(P>0.05). Conclusion Irregular myocardium repolarization after premature beat were mainly seen among patients with cardioangiopathy,which could tell an organic premature beat from a functional one,so it is beneficial to diagnose with coronary artery disease.