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Figure 5 | Orphanet Journal of Rare Diseases

Figure 5

From: Ventricular septal defect

Figure 5

The right ventricle has been windowed in this heart to show a perimembranous ventricular septal defect opening to the outlet of the right ventricle, with malalignment of the muscular outlet septum so that a small part of the aortic root overrides the crest of the muscular ventricular septum. The yellow dots mark the fibrous continuity between the leaflets of the tricuspid and the aortic valves, the feature which marks the defect as being perimembranous. Note that, despite the anterior deviation of the muscular outlet septum, which forms the cranial margin of the defect, there is no subpulmonary stenosis. This is an example of the so-called Eisenmenger defect.

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