A Case of Fetal Supraventricular Tachycardia with Fetal Ascites Treated by Antiarrhythmic Agent

We experienced a case of fetal supraventricular tachycardia (SVT) with fetal ascites diagnosed at 29 weeks of gestation in 29 year-old primigravida woman. Transplacental fetal therapy with maternal oral antiarrhythmic agent (verapamil, diltiazem) resulted in restoration of normal fetal sinus rhythm and disappearance of fetal ascites. At birth, the infant did not show any cardiac arrhythmia and hydropic appearance.