Survival and Long-Term Outcomes of Aortic Valve Replacement in Patients Aged 55 to 65 Years.

Background: This study aims to compare the outcomes after aortic valve replacement (AVR) with mechanical and biological valves in middle-aged patients (55-65 years) to determine the impact on long-term mortality and morbidity.

Methods: A retrospective analysis of 373 patients between 55 and 65 years of age who received a primary AVR with or without concomitant coronary artery bypass graft between April 1995 and March 2014. Propensity matching yielded 118 patient pairs in the mechanical and biological valve cohorts.