Successful Treatment of Supraventricular Tachycardia Exhibiting Hydrops fetalis with Flecainide Acetate.

AbstractBackground: The efficacy of flecainide acetate for the treatment of fetal supraventricular tachycardia with hydrops fetalis and changes in venous blood flow patterns in the fetus during treatment are reported. Case: Oral flecainide administration was started at 30 weeks of gestation. Cardioversion was achieved 6 days after treatment. Sustained abnormal venous Doppler indices were shown and complete normalization of venous returns was observed 6 days after cardioversion. A vigorous male baby was born, and he is now 1 year of age and in good condition with no medication. Conclusion: Reversible cardiac dysfunction was observed even after cardioversion in the fetus with supraventricular tachycardia, which could be assessed precisely by venous Doppler analysis.Copyright © 2003 S. Karger AG, Basel [ABSTRACT FROM AUTHOR]