Refractory Fetal Supraventricular Tachycardia with Hydrops Successfully Converted by Intraperitoneal Flecainide in the Fetus: A Case Report.

Introduction: Supraventricular tachycardia is the most common fetal tachyarrhythmia and if persistent often associated with fetal hydrops which can cause intrauterine and neonatal death.

Case Presentation: We present a case of early second trimester supraventricular tachycardia in a hydropic fetus, initially refractory to transplacental treatment.

Conclusion: The supraventricular tachycardia was successfully treated when supplemented with intraperitoneal flecainide in the fetus.