急性心肌梗死后室性快速心律失常室内异位激动点ECG、VCG定位分析

探讨急性心肌梗死（ＡＭＩ）后室性快速心律失常室内异位激动点与梗死部位关系。方法：用心电图 （ＥＣＧ）、心电向量图（ＶＣＧ）方法，对８５例ＡＭＩ后室性快速心律失常室内异位激动点进行定位。结果：共确定出室内 异位激动点１０１个，其中左室发出的异位激动点８６个；右室发出的异位激动点１５个。在左室发出的异位激动点 中，左室前壁发出２５个，占ＡＭＩ人数２９．４１％，占室内异位激动点总数的２４．７５％；左室基底部发出２０个，占ＡＭＩ人 数的２３．５２％，占室内异位激动点总数的１９．８０％；左室间隔部发出１７个，占ＡＭＩ人数２０％，占室内异位激动点总数 的１６．８３％；左室后壁发出１５个，占ＡＭＩ人数１７．６５％，占室内异位激动点总数的１４．８５％，其他部位发出的均较少。 结论：ＡＭＩ后室性快速心律失常室内异位激动点部位与ＡＭＩ部位是一致的。

Location analysis on intraventricular ectopic beats of ventricular tachycardia in patients after acute myocardial infarction

Aim:To investigate association of location of myocardial infarction with intraventricular ectopic beats of ventricular taceycardia.Methods:Intraventricular ectopic beats of ventricular tachycardia in 85 patients after acute myocardial infarction (AMI)were located with electrocardiogram(ECG)and vectorcardiogram(VCG).Results:A total of 101 intraventricular ectopic beats were determined ,86 of them from left ventricle and 15 from right ventricle.In 86 intraventricular ectopic beats rom left ventricle,25came from anterior wall,which accounted for 29.41% of total patients and 24.75% of total intraventricular ectopic beats;20from left ventricular base,which accounted for 23.52%of total patients and 19.80% of total intraventricular ectopic beats;17from left ventricular septum,which accounted for 20% of total patients and 16.83% of total intraventricular ectopic beats;15from posterior wall,which accouted for 17.65% of total patients and 14.85% of total intraventricular ectopic beats,and few from other positions.Conclusion:The locations of intraventricular ectopic beats of ventricular tachycardia in patients after AMI are consistent with those of AMI.