室上性阵发性心动过速,是指冲动起沅于心房或房室结的一种阵发性、心律规则而快速的心律失常。由于二者在临床与心电图上难以区分,故统称之为室上性阵发性心动过速。在儿科心律失常中,室上性阵发性心动过速是常见的一种,更多见于4个月以内的婴儿。有资料报导见于新生儿,偶发生于胎儿。其临床特点为骤然发病,年令愈小,心率愈快,婴儿心率通常快达250～300次/分,儿童则多为150～250次/分。发作时间可持续数秒、数分钟至数天,往往突然终止。如发 Supraventricular paroxysmal tachycardia, refers to the impulsive Yuan Yuan in the atrium or atrioventricular node of a paroxysmal, rapid and regular cardiac arrhythmias. As the two are difficult to distinguish between clinical and ECG, it is collectively referred to as supraventricular paroxysmal tachycardia. In pediatric arrhythmias, supraventricular paroxysmal tachycardia is a common type, found more in infants less than 4 months old. Data reported in newborns, Occasionally occurred in the fetus. The clinical features of sudden onset, the smaller the year, the heart rate faster, baby heart rate is usually as fast as 250 to 300 beats / min, children are mostly 150 to 250 beats / min. Seizures can last for seconds, minutes, and days, often ending abruptly. As hair