Key result
Aortic porcine bioprostheses are linked to ~53% greater 15-year freedom from structural valve deterioration versus mitral.
Why the study?
What are the long-term outcomes and durability of porcine bioprostheses for aortic and mitral valve replacement?
Population
2,879 patients who underwent aortic or mitral valve replacement between 1971 and 1990, age range 16-94 years.
Design
Cohort
Follow-up
up to 20 years
Authors
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May guide position-specific bioprosthesis selection; leaves open need for randomized durability confirmation.
Cohort (n=2,879)
What are the long-term outcomes and durability of porcine bioprostheses for aortic and mitral valve replacement?
Absolute Event Rate: 49% vs 32%
p-value: p=<0.05
Porcine bioprostheses demonstrate satisfactory long-term durability up to 20 years, particularly in older patients and those undergoing aortic valve replacement, though younger age remains a significant risk factor for structural deterioration.
Fann et al. (1996) conducted a cohort in Aortic or mitral valve replacement (n=2,879). Aortic valve replacement with porcine bioprosthesis vs. Mitral valve replacement with porcine bioprosthesis was evaluated on Freedom from structural valve deterioration at 15 years (p=<0.05). In patients receiving porcine bioprostheses, freedom from structural valve deterioration at 15 years was significantly higher for aortic than mitral valve replacement (49% vs 32%, p<0.05).
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