Study note

Relative frequency of congenital cardiac malformations

THE CONTEXT

The table gives the percentage of all congenital heart defects represented by each lesion.

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Ventricular septal defect accounts for 30%, the largest individual proportion listed.

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Atrial septal defect and persistent ductus arteriosus each account for 10%.

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Pulmonary stenosis and coarctation of the aorta each account for 7%.

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Aortic stenosis and tetralogy of Fallot each account for 6%.

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Complete transposition of the great arteries accounts for 4%, while other defects collectively account for 20%.

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