Biological or mechanical mitral valve replacement in patients 50-70 years of age-a propensity-adjusted analysis.

In patients aged 50-70 years, we found an interaction between age and MV or BV outcomes-those younger than 65 years gained a mortality advantage with MV, while outcomes were similar in the 65-70 age group. this supports the current guidelines recommending using MV in patients <65 years of age.