Respiratory syncytial virus and supraventricular tachycardia in an infant.

A 7-week infant admitted with bronchiolitis proven to be caused by respiratory syncytial virus developed a supraventricular tachycardia which responded to digitalization. She has remained well and no longer requires medication 6 months later, her electrocardiogram now being normal. The course of the illness suggests an association between infection with respiratory syncytial virus and the development of the tachycardia.