Experience using propranolol for the management of supraventricular tachycardia in patients younger than 1 year.

Objective: To assess the results and adverse events of propranolol therapy in infants younger than 1 year with supraventricular tachycardia.

Population And Methods: Infants younger than 1 year with documented supraventricular tachycardia who received oral treatment and prophylaxis with propranolol. Sex and age, associated congenital heart disease, ventricular preexcitation in the base line electrocardiogram, on-treatment recurrence, and adverse events were analyzed.