Taquiarritmia fetal com conduçäo atrioventricular 1: 1. Infusäo em veia umbilical de adenosina como teste diagnóstico / Fetal tachyarrhythmia with 1: 1 atrioventricular conduction. Adenosine infusion in the umbilical vein as a diagnostic test

RESUMO

This is the report of a case of fetal tachyarrhythmia with 11 atrioventricular conduction detected by pre-natal echocardiography in a fetus at 25-weeks gestation. Adenosine infusion via cordocentesis was performed as a diagnostic test to differentiate between atrioventricular nodal reentrant supraventricular tachyarrhythmia and atrial flutter. After infusion, transient 21 atrioventricular dissociation was obtained and the diagnosis of atrial flutter was made. Transplacental therapy with digoxin and amiodarone was then successfully used.