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Related Experiment Videos

Experience with aortic and mitral valve replacement in children

W G Williams, J C Pollock, D M Geiss

    The Journal of Thoracic and Cardiovascular Surgery
    |March 1, 1981
    PubMed
    Summary

    Pediatric valve replacement surgery showed high mortality and complication rates for mitral valve replacement (MVR), unlike aortic valve replacement (AVR). Valve repair is preferred over replacement in children to preserve natural valves.

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    Area of Science:

    • Cardiovascular Surgery
    • Pediatric Cardiology
    • Biomaterials Science

    Background:

    • Prosthetic valve replacement is a critical intervention for pediatric heart conditions.
    • Long-term outcomes and complications of valve replacement in children require ongoing evaluation.
    • Understanding the differences between aortic valve replacement (AVR) and mitral valve replacement (MVR) in pediatric populations is essential.

    Purpose of the Study:

    • To evaluate the outcomes of aortic valve replacement (AVR) and mitral valve replacement (MVR) in pediatric patients.
    • To compare the efficacy and complication rates of different prosthetic valve types.
    • To assess the long-term results and challenges associated with pediatric valve replacement surgery.

    Main Methods:

    • Retrospective analysis of 92 pediatric patients undergoing AVR, MVR, or both between 1963 and 1980.

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  • Comparison of operative mortality, survival rates, and major complication frequencies between AVR and MVR groups.
  • Evaluation of tissue versus mechanical prosthetic valve performance and management of valve outgrowth.

    • Main Results:

    • Aortic valve replacement (AVR) had no operative or late deaths, while mitral valve replacement (MVR) had a 32% operative mortality and 50% 5-year survival.
    • Major complications occurred in approximately 50% of survivors in both AVR and MVR groups within 6 years.
    • Valve outgrowth was manageable in AVR but problematic in MVR, necessitating frequent reoperations.

    Conclusions:

    • Mitral valve replacement (MVR) in children carries a significant operative risk and poor long-term survival compared to AVR.
    • Prosthetic valve replacement in pediatric patients is often palliative, with significant complication rates regardless of valve type.
    • Preservation of the natural valve through conservative repair techniques should be prioritized over prosthetic replacement in children.