A Case of Sudden Death Due to Persistent Severe Pulmonary Arterial Hypertension After Late Atrial Septal Defect Closure.

Atrial septal defects (ASDs) are one of the most prevalent congenital cardiac anomalies in adults. These interatrial communications can produce changes in the right heart (remodeling and failure) and the lungs (pulmonary hypertension). Most adults with ASDs are surgically treated with excellent results. However, a small fraction of patients is at risk for postoperative complications, particularly the persistence of pulmonary hypertension. A case of a 47-year-old woman who was found unresponsive in the bathroom of her house and died despite resuscitative efforts is described. According to medical records, the woman underwent a surgical repair of an atrial septal defect at the age of 37. At the autopsy, macroscopic and microscopic signs of advanced pulmonary hypertension were detected, highlighting the importance for the forensic pathologists to recognize pulmonary hypertension as a cause of sudden death in adults with a history of late surgical closure of an atrial septal defect.