Paroxysmal Supraventricular Tachycardia (PST) in Infants and Children.

PST is a life-threatening medical emergency, and the pediatrician should be aware of its signs and symptoms. Digoxin is very effective in terminating PST and relieving the cardiac failure which is usually present-especially when the attack has lasted 24 hours or longer. Prophylactic medication with either Digoxin or quinidine sulfate is of questionable value. It is best to treat each recurrence as if it were an initial episode of PST. [ABSTRACT FROM AUTHOR]