Cluster of multiple atrial tachycardias limited to pregnancy after radiofrequency ablation following senning operation

This case report describes a female patient with a cluster of four supraventricular tachycardias during the third trimester of pregnancy. The patient was surgically corrected with a Senning operation at the age of 15. Due to numerous monomorphic atrial tachycardias at the age of 28 an ablation using the noncontact mapping system EnSite© 3000 was successfully performed. She remained free of tachycardias for 2 years until the third trimester of pregnancy, where 4 electrical cardioversions and eventually a caesarean section were performed. Subsequently, the patient was free of tachycardias during a 36 month follow-up and the child is healthy.