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The long-term results of aortic valve replacement (AVR; n=737) with bileaflet mechanical prosthesis (MP) or Carpentier-Edwards Perimount bioprostheses (BP) were evaluated in different age groups. METHODS AND RESULTS: Since 1981, a total of 737 prostheses (424 bileaflet MP vs. 313 BP) were implanted for AVR in 278 patients aged ≥70 years (79 MP vs. 199 BP), in 191 patients aged 60-69 years (128 MP vs. 63 BP) and in 268 patients aged &lt;60 years (217 MP vs. 51 BP). Follow-up was completed for 6,523 patient-years in 98.5% of cases. Among the patients ≥70 years, both the actuarial survival rate (P=0.0434) and freedom from valve-related morbidity (P=0.0205) were better in the BP group than in the MP group without any difference in occurrence of structural valve deterioration in both groups. Among the patients aged 60-69, anticoagulant-related complications occurred less often in the BP group (P=0.0134) without any difference in long-term survival. Among the patients aged &lt;60, long-term survival was significantly better in the MP group, whereas freedom from anticoagulant-related events did not differ.

circulation journal

Long-Term Results of Aortic Valve Replacement With Mechanical Prosthesis or Carpentier-Edwards Perimount Bioprosthesis in Japanese Patients According to Age