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Related Experiment Videos

Valvular heart disease: a perspective.

S H Rahimtoola

    Journal of the American College of Cardiology
    |January 1, 1983
    PubMed
    Summary

    Valve replacement significantly improves patient symptoms and hemodynamics. Long-term survival rates vary by prosthesis type, with mechanical valves requiring anticoagulant therapy and bioprostheses showing increasing failure after five years.

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    Outcomes 15 years after valve replacement with a mechanical versus a bioprosthetic valve: final report of the Veterans Affairs randomized trial.

    Journal of the American College of Cardiology·2000

    Area of Science:

    • Cardiology
    • Cardiac Surgery
    • Biomedical Engineering

    Background:

    • Valvular heart disease management has been revolutionized by valve replacement surgery.
    • Long-term outcomes and complications associated with different prosthetic valves require ongoing evaluation.

    Purpose of the Study:

    • To review the survival rates and clinical outcomes associated with various prosthetic heart valves.
    • To discuss the management implications, including anticoagulant and antibiotic prophylaxis, following valve replacement.

    Main Methods:

    • Review of historical and contemporary survival data for Starr-Edwards, Björk-Shiley, and porcine bioprosthetic valves.
    • Analysis of symptomatic improvement and hemodynamic changes post-valve replacement.
    • Discussion of long-term management strategies and complication prevention.

    Main Results:

    • 10 and 15-year survival rates for Starr-Edwards valves are 56% and 44%, respectively.
    • Early survival (5-7 years) is similar across Starr-Edwards, Björk-Shiley, and porcine valves.
    • Recent surgical cohorts demonstrate improved survival compared to earlier decades.
    • Mechanical prostheses necessitate lifelong coumadin therapy; bioprostheses exhibit increasing failure rates after 5 years.
    • Valve replacement generally leads to significant symptomatic improvement and enhanced ventricular function in select patients.

    Conclusions:

    • Prosthetic heart valve replacement offers substantial clinical benefits for patients with valvular heart disease.
    • Long-term management requires careful consideration of prosthesis type, anticoagulation, and infection prophylaxis.
    • Further research is needed to fully elucidate the role of vasodilators and long-term bioprosthetic valve durability.

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