• Four children with syncope had a prolonged QT interval on the electrocardiogram. Neurologic studies were negative. One patient had associated deaf mutism, one had a family history of sudden death and prolonged QT interval, and two had ventricular arrhythmias while being monitored in the hospital. Treatment with propranolol hydrochloride eliminated the syncope in all patients, although the ECGs remained abnormal.
(Am J Dis Child 130:320-322, 1976)
Frank JP, Friedberg DZ. Syncope With Prolonged QT Interval. Am J Dis Child. 1976;130(3):320–322. doi:10.1001/archpedi.1976.02120040098019
Customize your JAMA Network experience by selecting one or more topics from the list below.