“…Whether acquired or congenital, this defect differs from the atrioventricular shunting frequently found in atrioventricular septal defects with common atrioventricular junction in that the essence of the Gerbode defect is the presence of discrete right and left atrioventricular junctions. 7 The congenital form of the defect occurs in less than 0.1% of all patients with congenitally malformed hearts. 8 The acquired Gerbode defect, also exceedingly rare, has been described as the result of endocarditis, aneurysm, trauma, myocardial infarction, and replacement of either the mitral or aortic valves.…”