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Related Experiment Videos

Urinary stone disease: a practical guide to metabolic evaluation

M W McDonald1, M L Stoller

  • 1Department of Urology, University of California, San Francisco, USA.

Geriatrics
|May 1, 1997
PubMed
Summary

Urinary stone disease, or urolithiasis, affects 10% of North Americans. Diagnosis involves history, physical exam, and imaging like intravenous pyelography for recurrent or high-risk cases.

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Area of Science:

  • Nephrology
  • Urology

Background:

  • Urolithiasis is a common urinary tract condition, ranking third after infections and prostate issues.
  • An estimated 10% of North Americans develop urinary calculi by age 70.
  • Diagnosis is typically confirmed through patient history and physical examination.

Purpose of the Study:

  • To outline diagnostic approaches for urinary stone disease.
  • To differentiate evaluation strategies based on stone recurrence and patient risk factors.
  • To highlight the gold standard for imaging in diagnosing urinary tract stones.

Main Methods:

  • Clinical history and physical examination for initial diagnosis.
  • Simplified laboratory evaluation for single stone episodes.
  • Extensive evaluation for recurrent, metabolically active, or high-risk stones (e.g., cystine stone formers, bladder dysfunction, nephrosclerosis).
  • Intravenous pyelography with tomography as the gold standard for imaging.

Main Results:

  • History and physical exam are often sufficient for diagnosis.
  • Laboratory evaluation is stratified based on stone episode history and risk.
  • Intravenous pyelography with tomography is confirmed as the definitive imaging modality.

Conclusions:

  • Diagnostic strategies for urolithiasis vary based on clinical presentation and risk.
  • Intravenous pyelography with tomography is essential for accurate diagnosis and treatment planning.
  • Risk stratification guides the extent of laboratory evaluation needed for urinary stone disease.

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