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Fig. 1 | Orphanet Journal of Rare Diseases

Fig. 1

From: Assessing the criteria for definition of perimembranous ventricular septal defects in light of the search for consensus

Fig. 1

The images show the features of perimembranous defects opening centrally to the base of the right ventricle (left hand panel), or extending so as to open primarily to the right ventricular inlet (central panel) or the right ventricular outlet (right hand panel). The defects were identified as being perimembranous because of the fibrous nature of their postero-inferior borders (see Fig. 2)

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