septal defect (ventricular)

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A ventricular septal defect is a left to right shunt that occurs through a defect in the intraventricular septum of the heart.

Septal defects may be congenital or they may be acquired during later life, as the result of a myocardial infarction (occurring in 1-3% of all infarcts) or trauma.

Defects may be single or multiple and vary greatly in size. In about 70% of cases the size of the defect is relatively small.

Last reviewed 01/2018

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