扩张性心肌病(DCMP)是一种顽固性和预后不良的疾病。本文对33例年龄5～16岁的DCMP病儿(男19、女14),做了普通心电图(ECG)和昼夜监视ECG检查,将其结果作一比较分析。有24.2%病儿,从出现临床症状到住院的时间短于1年,24.2%病程1～3年,51.5%病程超过3年。67%主诉迅速疲劳、眩晕、心区疼痛、体力负担时呼吸困难,39.4%病儿心功能不全Ⅰ°,30.3%心功能不全Ⅱ°a,21.2%心功能不全Ⅲ°b。 Dilated cardiomyopathy (DCMP) is a refractory and poor prognosis of the disease. This article 33 cases of DCMP sick children aged 5 to 16 years old (male 19, female 14), done a normal ECG and circadian monitoring ECG, the results for a comparative analysis. There are 24.2% of sick children, from the clinical symptoms to hospitalization time of less than 1 year, 24.2% of the course of 1 to 3 years, 51.5% of the course of more than 3 years. 67% complained of rapid fatigue, dizziness, pain in the heart area, dyspnea in physical burden, heart failure in 39.4% of sick children Ⅰ °, heart failure in 30.3% Ⅱ ° a, heart failure in 21.2% Ⅲ ° b.