PARTIAL TYPE OF COMMON ATRIOVENTRICULAR-CANAL DEFECT ASSOCIATED WITH MITRAL-STENOSIS

We report a 63-year-old woman, with a partial type of common atriovent ricular canal and mitral stenosis, who was hospitalized because of dys pnea on exertion, Two-dimensional echocardiogram showed an ostium prim um atrial septal defect with two well-formed AV valves located at the same level, However, both anterior and posterior mitral leaflets were markedly thickened with a thickened subvalvular apparatus, and the com misures were fused, Echocardiographic measurements demonstrated a mitr al valve area of 1.48 cm(2) with mild mitral regurgitation, Cardiac ca theterization demonstrated mild pulmonary artery hypertension with a l arge left to right shunt (72%) at the atrial, level, The combination o f the partial type of common atrioventricular canal and mitral stenosi s is rare; only one similar case has been reported previously in the l iterature.