Methods:Intraventricular ectopic beats of ventricular tachycardia in 85 patients after acute myocardial infarction (AMI)were located with electrocardiogram(ECG)and vectorcardiogram(VCG).

• 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。