Conclusion
Fetal AF is a serious and threatening second commonest fetal tachyarrhythmia with an associated mortality rate of 10%. Adequate diagnosis, awareness of association including fetal hydrops and cardiac anomaly, and multidisciplinary team involvement often ensure optimal outcome. Postnatal cardioversion a successful way of achieving sinus rhythm and antiarrhythmic prophylaxis is often necessary especially for the neonatal period. It is essential fetal AF is not managed as ‘fetal distress’ by general obstetricians and midwives. Call for help when in doubt.