Epstein's anomaly. Yes, it is possible. It can eventually cause right heart failure and even sudden cardiac death. It is very important to be followed by a cardiologist that specializes in adult congenital defects on a regular basis. It is highly variable though. Some patients have a normal life span without many if any symptoms. Http://my. Clevelandclinic. Org/services/heart/disorders/arrhythmia/Ebsteins-Anomaly.