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Updated: Jun 29, 2026

Fetal Echocardiography and Pulsed-wave Doppler Ultrasound in a Rabbit Model of Intrauterine Growth Restriction
Published on: June 29, 2013
Effect of prenatal antiarrhythmic treatment on cardiac function in a twin pregnancy
Peter Van Leeuwen1, Sven Schiermeier, Birgit Hailer
1Department of Biomagnetism, Grönemeyer Institute of Microtherapy, University of Witten/Herdecke, Bochum, Germany. petervl@microtherapy.de
Abstract:
We present a case of supraventricular tachycardia affecting one fetus in a twin pregnancy. Before and after treatment with flecainide and cardioversion, we examined conduction times and heart rate variability (HRV) in both twins on the basis of magnetocardiography. Cardiac conduction times increased in both fetuses but HRV showed opposing effects with a number of HRV measures. This case demonstrates that magnetocardiography not only enables identification of fetal arrhythmia, but also permits the investigation of the effects of antiarrhythmic treatment on the conductive system as well as on interaction with the autonomic nervous system.
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