Clinical study
Quadricuspid semilunar valve

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Abstract

Clinical and necropsy findings are described in 10 patients with quadricuspid semilunar valves, and previous reports of 197 cases are reviewed. Quadricuspid semilunar valves occur infrequently, and usually the pulmonic valve is affected. The quadricuspid pulmonic valve typically functions normally. The quadricuspid aortic valve was functionally abnormal in 5 of 11 cases studied.

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