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[Recurrence-free and recurrent urolithiasis: metabolic differences].

O V Konstantinova, E K Ianenko, N K Dzeranov

    Urologiia (Moscow, Russia : 1999)
    |January 10, 2001
    PubMed
    Summary

    Recurrent urolithiasis risk is linked to specific metabolic markers. Elevated urea, creatinine, and serum uric acid levels, along with imbalances in calcium, sodium, and potassium excretion, indicate higher recurrence potential for kidney stones.

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    Area of Science:

    • Nephrology
    • Metabolic Medicine
    • Urology

    Background:

    • Urolithiasis, or kidney stone disease, affects a significant portion of the population.
    • Understanding the metabolic factors contributing to stone recurrence is crucial for effective patient management.
    • Previous research has identified various risk factors, but specific biochemical profiles for different stone types require further elucidation.

    Purpose of the Study:

    • To investigate the association between specific biochemical markers in blood and urine and the risk of urolithiasis recurrence.
    • To differentiate metabolic profiles associated with uric acid versus calcium-oxalate stone recurrence.

    Main Methods:

    • Biochemical analysis of 12 metabolic blood and urine indices in 114 patients (35 recurrence-free, 79 recurrent urolithiasis) over a 1-6 year follow-up.

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  • Patients were stratified based on stone composition (uric acid or calcium-oxalate) and recurrence status.
  • Statistical analysis to identify correlations between biochemical markers and stone recurrence.

    • Main Results:

    • For uric acid urolithiasis, recurrence risk was associated with elevated serum urea (5.67 +/- 0.14 mmol/l) and creatinine (0.090 +/- 0.008 mmol/l), hyperuricemia, and hyperuricosuria.
    • These were further linked to increased renal calcium excretion (5.88 +/- 0.49 mmol/day) and a high sodium-to-potassium excretion ratio (3.28 +/- 0.08).
    • For calcium-oxalate lithiasis, recurrence was associated with higher serum uric acid (0.310 +/- 0.042 mmol/l) and serum sodium (114 +/- 0.8 mmol/l) in the presence of hypercalciuria and hyperuricosuria.

    Conclusions:

    • Specific biochemical profiles can predict the risk of urolithiasis recurrence.
    • Metabolic monitoring of urea, creatinine, uric acid, calcium, sodium, and potassium is valuable for managing patients with a history of kidney stones.
    • Tailored preventive strategies based on these biochemical markers may reduce stone recurrence rates.