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Aortic valve replacement in the young

E L Jones1

  • 1Emory University School of Medicine, Emory Clinic, Atlanta, Georgia 30322.

Journal of Cardiac Surgery
|March 1, 1994
PubMed
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Aortic allografts offer excellent long-term outcomes, including freedom from anticoagulants and reoperation, outperforming porcine valves. However, freehand implantation carries a risk of valve insufficiency, making root replacement a safer alternative.

Area of Science:

  • Cardiovascular Surgery
  • Transplantation Immunology
  • Biomaterials Science

Background:

  • Aortic allografts are attractive for valve replacement due to low thromboembolism and no need for anticoagulants.
  • They offer superior 10-year freedom from complications compared to porcine bioprosthetic valves.
  • Hemodynamic performance is comparable to mechanical valves like the St. Jude valve.

Purpose of the Study:

  • To evaluate the outcomes of aortic allograft implantation, comparing freehand versus root replacement techniques.
  • To assess the incidence of valve insufficiency and other complications associated with each method.

Main Methods:

  • The study involved 51 patients undergoing freehand aortic allograft procedures and 22 patients receiving root replacement between 1986 and 1993.

Related Experiment Videos

  • Echocardiography was used to evaluate allograft function, specifically focusing on valve insufficiency.
  • Complications, including explantation rates and reasons, were meticulously recorded.

    • Main Results:

    • Freehand aortic allograft implantation demonstrated an unacceptable incidence of valve insufficiency.
    • Aortic valve replacement using a segment of the allograft root showed better results regarding insufficiency.
    • Coronary artery reimplantation in root replacement carries potential risks.

    Conclusions:

    • While aortic allografts offer significant advantages, the freehand technique is associated with a high rate of insufficiency.
    • Limited root replacement with the allograft appears to mitigate the risk of insufficiency.
    • Careful surgical technique is crucial, especially regarding coronary artery management during root replacement.