心房扑动系小儿时期罕见的心律失常。多发生在婴儿期。现报道我院2例婴儿患者。[例1]高×,女,5个月。因烦躁、面色苍白2个月,于1977年9月26日入院。其母妊娠38(1/2)周检查发现胎心为160次/分钟,4小时内增至200次/分钟,乃紧急剖腹产。产后患儿心率下降至140次/分钟。体检:面色苍白,心律不齐,无杂音及心力衰竭。心电图示心房扑动,房率375/分,室率188/分,2:1～3:1传导。X 线胸片示心影正常。治疗以地戈辛60微克/公斤体重,2天内饱和量。疗效不显,3天后加用异搏停10毫克,每天3次,并以地戈辛40微克/公斤体重,每天2次维持。患儿于第七天心律转为窦性,室率110～120次,P-R 间 Atrial flutter is a rare arrhythmia in infancy. Occur in infancy. Now reported in our hospital 2 cases of infant patients. [Example 1] high ×, female, 5 months. Because of irritability, pale for 2 months, on September 26, 1977 admission. The mother’s pregnancy 38 (1/2) weeks examination found that fetal heart rate was 160 beats / min, 4 hours increased to 200 beats / min, is an emergency caesarean section. Postpartum children’s heart rate dropped to 140 beats / min. Physical examination: pale, arrhythmia, no noise and heart failure. ECG showed atrial flutter, room rate 375 / min, room rate 188 / min, 2: 1 ~ 3: 1 conduction. X-ray showed normal heart shadow. Treatment with digoxin 60 micrograms / kg body weight, 2 days of saturation. The curative effect is not obvious, after 3 days plus verapamil 10 mg, 3 times a day, and digoxin 20 μg / kg body weight, 2 times a day to maintain. Children on the seventh day into the sinus rhythm, ventricular rate 110 to 120 times, P-R