本文报道85例小儿心肌炎,按病因分为病毒性(70.6%)、中毒性(18.7%)及风湿性心肌炎(11.7%)三组。病毒性心肌炎症状轻重悬殊,以心律不齐为主要体征,心电图以异位心律(83.3%)为多,其次为传导阻滞(35%);中毒性心肌炎常被原发疾病所掩盖,53.3%存在第一心音低钝,心电图ST-T改变(46.6%)较多;风湿性心肌炎多有关节疼痛(80%),发热(70%),第一心音低钝(60%),心尖部双期杂音(60%)及心脏扩大(70%),心电图以传导阻滞(80%)和ST-T改变(50%)为主,X线检查心脏扩大占80%。 This article reports 85 cases of pediatric myocarditis, divided into viral (70.6%), toxic (18.7%) and rheumatic myocarditis (11.7%) three groups according to the cause. Viral myocarditis severity of disparity, with arrhythmia as the main sign, the ectopic ECG (83.3%), followed by conduction block (35%); toxic myocarditis is often covered by primary disease, 53.3% There was a low blunted heart sound, ST-T electrocardiogram (46.6%) was more; rheumatoid myocarditis and more joint pain (80%), fever (70%), the first heart sound low blunt (60% (60%) and enlargement of the heart (70%). The electrocardiogram mainly consisted of conduction block (80%) and ST-T changes (50%).