Paroxysmal atrial tachycardia in infancy: long-term follow-up study of 49 subjects.
A follow-up study of 49 individuals with paroxysmal atrial tachycardia in infancy is reported. Forty subjects had supraventricular tachycardia and nine had atrial flutter/fibrillation. The mean follow-up period was 24 years. Males whose ECGs showed preexcitation displayed the highest rate of recurrences (approximately 60%) in the long-term follow-up. Approximately 30% of the subjects without preexcitation in the ECG displayed episodes of supraventricular tachycardia in their third decade. Eight-six percent of the children of the subjects in the present series were males. The prognosis is good in the absence of congenital heart disease.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004562:Electrocardiography; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D008297:Male; D012008:Recurrence; D013614:Tachycardia, Paroxysmal / Q000175:diagnosis* / Q000503:physiopathology; D013997:Time Factors; D014927:Wolff-Parkinson-White Syndrome / Q000175:diagnosis