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Urolithiasis in geriatric patients.

Yukio Usui1, Shouji Matsuzaki, Kazuo Matsushita

  • 1Department of Urology, Tokai University School of Medicine, Isehara, Kanagawa, Japan.

The Tokai Journal of Experimental and Clinical Medicine
|January 13, 2004
PubMed
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In geriatric patients, higher urinary calcium excretion is linked to recurrent urolithiasis (kidney stones). This suggests hypercalciuria may contribute to stone recurrence in older adults.

Area of Science:

  • Urology
  • Geriatric Medicine
  • Nephrology

Background:

  • Urolithiasis affects a significant portion of the population, with unique considerations in geriatric patients.
  • Understanding risk factors for stone formation and recurrence in the elderly is crucial for effective management.

Purpose of the Study:

  • To identify risk factors for urolithiasis (kidney stones) and their recurrence specifically within a geriatric population (patients over 65).

Main Methods:

  • Retrospective review of medical records for 209 elderly patients (age > 65) diagnosed with urolithiasis.
  • Analysis of stone composition, incidence of stone types, and recurrence rates over a mean follow-up of 1385 days.

Main Results:

  • Elderly patients constituted 9.6% of the total stone patient cohort.

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  • Calcium oxalate and calcium phosphate stones were most prevalent (80%).
  • Uric acid stones showed a higher incidence in the elderly compared to younger individuals (10.7% vs. 5.1%).
  • Recurrent stones were observed in 15.4% of geriatric patients.
  • Significantly higher urinary calcium excretion was noted in recurrent stone formers (293 mg/day) versus non-recurrent patients (177 mg/day).
  • Kaplan-Meier analysis indicated similar recurrence probabilities between elderly and younger patient groups.

    • Conclusions:

    • Hypercalciuria (elevated urinary calcium) is identified as a potential contributing factor to stone recurrence in geriatric urolithiasis patients.
    • These findings highlight the importance of assessing urinary calcium levels in older adults with a history of kidney stones.