What is ventricular septal defect, Biology

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What is Ventricular Septal Defect (VSD) ?

VSD accounts for 15-20 per cent of all CHDs. The ventricular septum may be divided into a small membranous portion and a large muscular portion. The muscular septum has three components: the inlet, the trabecular and the outlet septum. The trabecular septum is further divided into central, marginal and apical portions. A VSD may be classified into perimembranous, inlet, outlet, central muscular, marginal muscular and apical muscular defects.

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Figure: Ventricular septal defect


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