本文报道24例儿童和青年窦房结功能不全的心电图表现。男性15例,女性9例,年龄3天～25岁。6例无心脏病。16例患先天性心脏病,其中11例系在心脏矫治手术后出现窦房结功能不全。2例为急性病毒性心肌炎后发生窦房结功能不全。根据心电图类型,这24例慢性窦房结功能不全可分为三组:第一组有持久或反复发作的不正常窦性心动过缓,心率<50次/分,静脉注射阿托品(0.01毫克/公斤)或作次极量运动未能使心率提高≥20％或达到58次/分以上,共10例;第二组为反复发作窦性静止,共12例(第一 This article reports 24 cases of children and young sinus dysfunction electrocardiogram performance. 15 males and 9 females, aged 3 days to 25 years old. 6 cases without heart disease. 16 cases of congenital heart disease, of which 11 cases after sinus surgery sinus node dysfunction. Two cases had sinus node dysfunction after acute viral myocarditis. According to the type of ECG, these 24 cases of chronic sinus node dysfunction can be divided into three groups: the first group of persistent or recurrent abnormal sinus bradycardia, heart rate <50 beats / min, intravenous atropine (0.01 mg / Kg) or submaximal exercise failed to raise the heart rate ≥ 20% or up to 58 beats / min, a total of 10 cases; the second group was recurrent sinus rest, a total of 12 cases (the first