Risk factors for hospital mortality in valve replacement with porcine bioprosthesis at an universitary institution.

Objective: Study designed to identify characteristics of patients related to increased hospital mortality after valve replacement, assumed as risk factors.

Methods: Retrospective study including 808 patients submitted to the implant of St. Jude Biocor porcine bioprosthesis between 1994 and 2009 at Instituto de Cardiologia do Rio Grande do Sul.