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

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