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Related Experiment Videos

Oxalate stone disease after intestinal resection

J G Gregory, K Y Park, H W Schoenberg

    The Journal of Urology
    |May 1, 1977
    PubMed
    Summary

    Jejuno-ileal bypass surgery increases the risk of calcium oxalate urinary calculi formation. Reducing dietary oxalate is the most effective strategy to prevent stone recurrence in these patients.

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    Area of Science:

    • Nephrology
    • Gastroenterology
    • Urology

    Background:

    • Jejuno-ileal bypass (JIB) surgery is a weight-loss procedure.
    • Patients undergoing JIB are at increased risk for urinary calculi (stones).
    • Calcium oxalate stones are the predominant type observed post-JIB.

    Purpose of the Study:

    • To investigate the conditions associated with urinary calculi formation in JIB patients.
    • To evaluate the effectiveness of therapeutic interventions for stone prevention.

    Main Methods:

    • Screening 543 JIB patients for urinary calculi 1-6 years postoperatively.
    • Measuring serum and urinary oxalate, urinary calcium oxalate saturation, and crystal size distribution.
    • Assessing intestinal oxalate absorption and urinary crystallization rates in stone-forming versus non-stone-forming patients.

    Main Results:

    • 9% of patients developed 1-2 calculi, and 3% developed multiple calculi.
    • 94% of recovered calculi were calcium oxalate.
    • Patients with stones showed differences in urinary crystallization rates and large crystal particle counts.

    Conclusions:

    • Urinary crystallization rate and large crystal particle presence distinguish stone-forming JIB patients.
    • Therapeutic regimens must address these stone-forming characteristics.
    • Extreme reduction of dietary oxalate is the only successful regimen for preventing calculus formation.

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