婴儿期的快速型心律失常,以室上性心动过速多见,其预后较好。但也有对各种药物无效的难治性病例。本文报告1例婴儿室上性心动过速,经用洋地黄、心得安、奎尼丁等约9个月,但未见效,后用异搏定口服而使病情控制。病婴为5个月男婴,于80年9月26日出生,生后2个月患上呼吸道感染,经治医生发现患婴心率快,每分钟200次左右,遂收留入院,诊断为室上性心动过速,使用洋地黄和心得安治疗,然而心率未减。81年3月入北海道大学附属医院住院,入院时体检, Tachycardia in infancy, more common in supraventricular tachycardia, the prognosis is good. But there are also refractory cases of various drugs ineffective. This article reports a case of infantile supraventricular tachycardia, with digitalis, propranolol, quinidine, etc. for about 9 months, but no effect, after treatment with verapamil and disease control. The sick baby is a 5-month-old baby boy born on September 26, 1980 and has respiratory tract infection 2 months after birth. The doctor found that the infants had a fast heart rate of about 200 beats per minute and admitted to hospital for diagnosis Tachycardia, use digitalis and propranolol treatment, however, the heart rate is not reduced. March 1981 Hospitalization Hokkaido University Hospital, admission medical examination,