Bioprosthetic vs mechanical mitral valve replacement for infective endocarditis in patients aged 50 to 69 years.

Mechanical valve prostheses were associated with better survival, lower rates of reoperation compared with bioprostheses within 15 years after MVR in IE patients aged 50 to 69. These findings suggest mechanical valve prostheses may be a more reasonable alternative to bioprostheses in this patient group.