[Wolff-Parkinson-White syndrome with paroxysmal supraventricular tachycardias of the fetus and the newborn--case report].

Paroxysmal supraventricular tachycardia causing an intrauterine congestive heart failure was diagnosed in a fetus at 33 week's gestation. After maternal digitalization the tachycardias and the signs of heart failure disappears. Postpartum a Wolff-Parkinson-White syndrome was recognised by electrocardiography. The paroxysmal supraventricular tachycardias of the newborn was terminated abruptly by intravenous application of propafenon. Recurrences were prevented by the oral administration of propafenon.