Ultrasound recognition and treatment of fetal supraventricular tachycardia with hydrops: a case report.

To manage fetal tachyarrhythmia induced hydrops, both a correct diagnosis and adequate intrauterine therapy are fundamentally important. We present a 32-week-gestational-age hydropic fetus with supraventricular tachycardia who responded dramatically after transplacental administration of high dose digoxin (1 mg intravenously daily). The baby was born at 36 weeks' gestation followed by a successful postnatal conversion. Prenatal fetal echocardiography is emphasized in determining appropriate treatment and monitoring fetal well-being which in this case resulted in a good outcome.