Congenital Complete Heart Block Complicated by Atrial Flutter Diagnosis and Management.

Seventeen-month-old child was diagnosed in utero to have congenital complete heart block. The mother has Sjogren's syndrome with high Anti Ro antibodies. The baby was delivered at term with a heart rate of 55-60 beats per minute. Echocardiography revealed a structurally normal heart with a small atrial septal defect and moderate patent ductus arteriosus. At the age of 17 months, he developed atrial flutter which was aborted using electrical cardioversion in the Cath lab. No recurrence of the atrial flutter during a one-year follow-up.