紊乱性房性心动过速(简称CAT)是一种少见的心律失常。本文报道1973年1月～1984年5月所见33例CAT,其中男20例,女13例,年龄1天～12岁。主要伴发病为病毒性心肌炎、先天性心脏病和呼吸道感染。临床表现以呼吸道和消化道症状为主,婴幼儿多无症状,年长儿多述心悸、胸闷、头晕。33例心电图均符合紊乱性房性心动过速的心电图特征。33例进行抗感染和抗心律失常治疗结果:治愈13例,好转12例,无效6例,死亡2例。16例进行2～11年随访,除1例遗留房颤外,15例经心电图、超声心动图、X线摄片及左心功能测定均正常。 Disorders Atrial Tachycardia (CAT) is a rare arrhythmia. This article reports from January 1973 to May 1984 seen 33 cases of CAT, including 20 males and 13 females, aged 1 day to 12 years. The main associated with viral myocarditis, congenital heart disease and respiratory infections. Clinical manifestations of respiratory and gastrointestinal symptoms mainly infants and young children more than asymptomatic, elderly children described palpitations, chest tightness, dizziness. 33 cases of electrocardiogram are consistent with ECG characteristics of atrial tachycardia. 33 cases of anti-infective and anti-arrhythmia treatment results: 13 cases were cured, improved in 12 cases, 6 cases were ineffective, 2 cases died. 16 cases were followed up for 2 to 11 years. Except one case of residual AF, 15 cases were normal by electrocardiogram, echocardiography, X-ray and left ventricular function.