Among 111 hearts with so-called "isolated" @entity1757 , 18 specimens were found to have a subaortic perimembranous defect with an overriding aortic valve but without @entity849 . The ventricular architecture was characterized by several abnormalities. A constant finding was the wide right ventricular outflow tract. The outlet septum had its normal continuity with the septomarginal trabecula, but its parietal extension was located relatively far anteriorly. Part of the aortic valve thus inserted to the right ventricular component of the ventriculo-infundibular fold in the gap between the outlet septum and the tricuspid valve. @entity1002 comprised mitral @entity340 in all cases. There was an anteroseptal twist (leftward thickening of the anterior part of the ventricular septum) in 16 cases. A bicuspid aortic valve and/or malformed cusps were observed in 4 cases. Because of the linking phenomenon of aortic override, we also examined 10 hearts with @entity215 and, in the latter, such abnormalities were not found. Our observations indicate that this seemingly simple type of defect is part of a complex @entity600 involving both septation and valve formation. Awareness of the existence of the @entity854 might make them accessible for echocardiographic diagnosis. It was noteworthy that 11 of the 18 @entity1 had @entity2008 , 9 of them presenting with @entity7440 .

Abnormal architecture of the ventricles in hearts with an overriding aortic valve and a perimembranous XXXX ("Eisenmenger VSD").

@entity1 :: ('9606', 'Species') :: ['patients'] @entity215 :: ('MESH:D013771', 'Disease') :: ['tetralogy of Fallot'] @entity1757 :: ('MESH:D006345', 'Disease') :: ['ventricular septal defect'] @entity600 :: ('MESH:D000014', 'Disease') :: ['malformation'] @entity849 :: ('MESH:D011666', 'Disease') :: ['pulmonary stenosis'] @entity854 :: ('MESH:D018376', 'Disease') :: ['architectural abnormalities'] @entity2008 :: ('MESH:D002869', 'Disease') :: ['chromosomal abnormalities'] @entity340 :: ('MESH:D006349', 'Disease') :: ['valve anomalies'] @entity7440 :: ('MESH:C580500', 'Disease') :: ['trisomy-18'] @entity1002 :: ('MESH:D018487', 'Disease') :: ['Left ventricular abnormalities']
@entity1757 :: (MESH:D006345,Disease) :: ['ventricular septal defect']
