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Apicoaortic valved conduits for complex left ventricular outflow obstruction: technical considerations and current

J W Brown, D A Girod, R A Hurwitz

    The Annals of Thoracic Surgery
    |August 1, 1984
    PubMed
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    The porcine-valved apicoaortic conduit effectively treats complex left ventricular outflow obstruction, showing significant hemodynamic improvement. Long-term results are acceptable, with valve durability improvements needed.

    Area of Science:

    • Cardiovascular Surgery
    • Medical Devices
    • Hemodynamics

    Background:

    • Complex left ventricular outflow obstruction presents significant surgical challenges.
    • Previous surgical attempts often fail to provide lasting relief.
    • Patients typically present with severe symptoms and multiple prior interventions.

    Purpose of the Study:

    • To review surgical considerations, clinical follow-up, and hemodynamic outcomes.
    • To evaluate the efficacy of porcine-valved apicoaortic conduits in complex left ventricular outflow obstruction.
    • To assess the long-term results and complications associated with this procedure.

    Main Methods:

    • Retrospective review of 23 patients undergoing apicoaortic conduit insertion (1976-1983).
    • Analysis of surgical data, clinical outcomes, and hemodynamic measurements.

    Related Experiment Videos

  • Postoperative cardiac catheterization at 1 to 1.5 years.

    • Main Results:

    • Significant reduction in left ventricular-aortic gradient (91 to 13 mm Hg, p < 0.001).
    • No thromboembolic events reported in patients not on anticoagulants.
    • Mortality rate of 26%, with specific high-risk patient groups identified.
    • Four survivors required reoperation for conduit-related issues.

    Conclusions:

    • The apicoaortic conduit is an effective treatment for complex left ventricular outflow obstruction.
    • The procedure offers acceptable long-term hemodynamic improvement.
    • Enhancing conduit valve durability is crucial for improving late-term outcomes.