Case Report

Pediatric Cardiology

, Volume 32, Issue 5, pp 678-680

First online:

Tachycardia-Induced Cardiomyopathy After Functional Closure of the Foramen Ovale in a Fetus

  • Elisabeth MlczochAffiliated withDivision of Pediatric Cardiology, Medical University of Vienna Email author 
  • , Ulrike Salzer-MuharAffiliated withDivision of Pediatric Cardiology, Medical University of Vienna
  • , Barbara UlmAffiliated withDivision of Fetomaternal Medicine, Medical University of Vienna
  • , Manfred MarxAffiliated withDivision of Pediatric Cardiology, Medical University of Vienna

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Abstract

Although fetal tachyarrhythmias are relatively rare, they are an important causes of fetal morbidity and mortality. We report a 30-week pregnant woman with fetal tachycardia, fetal hydrops and ascites. Fetal heart rate was 230 bpm. Fetal heart rate was 230 bpm. M-mode echocardiography revealed a tachycardia with a 1:1 relationship between atrial and ventricular conduction and a short time interval between ventricular and atrial contraction. These findings suggested a diagnosis of atrioventricular re-entrant tachycardia. On the third day digoxin treatment, the fetal heart rate was still 225 bpm with a 1:1 relationship between atrial and ventricular conduction. At this time, no flow across the foramen ovale was detected. Functional closure of the foramen ovale was suspected.

Keywords

Fetal tachycardia Tachycardia induced cardiomyopathy Closed foramen ovale