Perimembranous ventricular septal defect and Gerbode defect.

A 27-year-old male presented with a known history of congenital ventricular septal defect (VSD). A Gerbode-type defect was discovered intraoperatively that was originally misinterpreted as pulmonary hypertension. The case report will review the Gerbode defect and the transesophageal echocardiography findings. It is important, in patients with history of perimembranous VSD, to consider Gerbode-type defect when the tricuspid regurgitation jet velocity is high.