Profile of submitral left ventricular aneurysms in Indian patients.

Annular subvalvar aneurysms of the left ventricle initially described from Nigeria are considered to be rare in India. We report 6 such cases studied clinically and by noninvasive and invasive investigations during the last 8 years. In 4 cases morphologic documentation was available at surgery or autopsy. The clinical picture was dominated by congestive cardiac failure and mitral regurgitation and most of the patients were young. Echocardiographic studies provided the precise noninvasive diagnosis by demonstrating large aneurysms arising below the posterior mitral leaflet. In one case the submitral left ventricular aneurysm extended into the left atrium. The mortality was high in unoperated cases and operative repair under cardiopulmonary bypass is the most appropriate management.