Key result
Aortic valve replacement with the Freestyle stentless bioprosthesis demonstrated an operative mortality of 3.4% and a 9-year overall survival of 46%, similar to the matched general population.
Population
1014 patients undergoing aortic valve replacement (AVR), mean age 73+/-3 (range: 20 to 90) years.
Design
Cohort
Follow-up
up to 9 years (2953 patient-years)
Authors
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Supports Freestyle bioprosthesis as viable AVR option; extends durability observations but remains hypothesis-generating.
Cohort (n=1,014)
No
The Freestyle stentless bioprosthesis demonstrates safe implantation and encouraging mid-term durability up to 9 years, though surgical experience significantly improves hemodynamic performance.
Ennker et al. (2008) conducted a cohort in Aortic valve disease requiring replacement (n=1,014). Medtronic Freestyle stentless bioprosthesis was evaluated on Operative mortality. Aortic valve replacement with the Freestyle stentless bioprosthesis demonstrated an operative mortality of 3.4% and a 9-year overall survival of 46%, similar to the matched general population.
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