Ventricular Septal Defect
N C Joshi
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Ventricular Septal Defect - Types
- Supracristal
- Membranous
- Posterior
- Muscular

Figure 1: Anatomical locations of various ventricular septal defects, viewed with the right ventricular free wall removed
A= perimembranous inlet (" AV canal - type") VSD
B= Perimembranous trabecular (typical membranous) VSD
C= Perimembranous infundibular ("tetralogy-type") VSD
D= Inlet muscular VSD
E= Trabecular muscular VSD
F= Infundibular (or outlet) muscular VSD
G= Subarterial infundibular ("supracristal") VSD
Black area represents the membranous ventricular septum


Locations of various ventricular septal defects



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