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。