Fig. 6From: Assessing the criteria for definition of perimembranous ventricular septal defects in light of the search for consensusThe image shows a perimembranous defect opening to the outlet of the right ventricle with antero-cephalad malalignment of the muscular outlet septum. There is no obstruction, however, of the right ventricular outflow tract. This is an example of the so-called Eisenmenger defectBack to article page