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.