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Full-root Aortic Valve Replacement by Stentless Aortic Xenografts in Patients with Small Aortic Roots
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A Technique for Avoiding Patient-Prosthesis Mismatch in the Small Aortic Root.

Abdallah K Alameddine1,2, Victor K Alimov1,2, Fabrizio Pluchino1,2

  • 1Division of Cardiac Surgery, Baystate Medical Center, Springfield, Massachusetts.

Journal of Cardiac Surgery
|March 29, 2016
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Summary

A novel surgical technique addresses small aortic root challenges by implanting a custom composite mechanical prosthesis in a supra-annular position. This method avoids patient-prosthesis mismatch and potential complications in patients with aortic root disease.

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Area of Science:

  • Cardiovascular Surgery
  • Biomedical Engineering

Background:

  • Small aortic roots present surgical challenges due to tissue fragility and calcification.
  • These factors increase risks of small prosthesis implantation, bleeding, and paravalvular leaks.

Observation:

  • A "homemade" composite mechanical prosthesis-conduit was implanted in a supra-annular position.
  • This technique was successfully applied in two patients with small aortic roots.

Findings:

  • The supra-annular implantation facilitated the use of a larger prosthesis than typically possible.
  • This approach effectively mitigated the risk of patient-prosthesis mismatch.

Implications:

  • This technique offers a viable solution for complex aortic root reconstructions.
  • It may improve outcomes for patients with small aortic roots undergoing aortic valve replacement.