The median was 11.5 (3) In the group of heart diseases the incidence of SVE and VE detected by 24 hrs DCG monitoring was 5.7 and 3.7times higher than that of the routine ECG exam respectively.

• 心脏疾病组24小时DCG与常规心电图比较；SVE及VE的阳性检出数前者比后者分别高5.；7及3