Mean annual incidence of open valvular heart surgery according to underlying etiology for valve dysfunction in Salvador, Brazil, 2002–2005.

*Mean annual incidence of open valvular heart surgery per 100,000 population.†Includes 19 patients with rheumatic heart disease associated with endocarditis.‡Includes patients with calcific aortic stenosis and mitral annular calcification related to aging.§Includes one patient each with the following etiologies: mitral valve prolapse, systemic lupus erythematosus, Wegener’s granulomatosis, Marfan syndrome, alcoholic cardiomyopathy and traumatic injury.