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The extended Biocor stentless aortic bioprosthesis. Early clinical experience
G Dellgren1, M Eriksson, L A Brodin
1Karolinska Hospital, Department of Surgical Sciences, Karolinska Institute, Stockholm, Sweden. goran.dellgren@thsurg.hs.sll.se
Scandinavian Cardiovascular Journal : SCJ
|November 30, 1999
Summary
The Extended Biocor stentless aortic bioprosthesis shows favorable hemodynamics one year post-implantation. This aortic valve replacement is suitable for elderly patients with narrow aortic roots.
Area of Science:
- Cardiovascular Surgery
- Biomaterials Science
Background:
- The Extended Biocor stentless aortic bioprosthesis utilizes bovine pericardium and porcine leaflets with unique supra- and subvalvular extensions.
- These extensions facilitate aortic root enlargement and cover the non-coronary sinus, potentially improving surgical fit.
Purpose of the Study:
- To prospectively evaluate the one-year clinical and hemodynamic outcomes of the Extended Biocor stentless aortic bioprosthesis.
Main Methods:
- Seventy-one patients received the stentless valve, with 62 having aortic stenosis and 28 undergoing concomitant coronary artery bypass grafting (CABG).
- Follow-up data one year after implantation were analyzed for mortality, valve-related complications, and hemodynamic performance.
Main Results:
- Early and late mortality rates were 7% and 5%/patient-year, respectively, with no valve-related deaths.
- No valve failures or late endocarditis were reported; four patients experienced thromboembolic events.
- One-year mean transvalvular pressure difference was 7.9 mmHg, with no significant aortic regurgitation observed.
Conclusions:
- The Extended Biocor stentless bioprosthesis demonstrates a favorable hemodynamic profile one year post-surgery.
- Its design may offer advantages in elderly patients with specific aortic root anatomies, including narrow, thin, or calcified walls.