The incidence rate of ventricular premature was96.5%,frequent ventricular premature75.4%,pair ventricular premature77.2%,ventricular tachycardia59.6%,atrial premature82.2%in subnormal DCG of chronic patents.

• 慢型DCG异常检出率室早最高；为96.；5%25；其中频发室早75