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Related Experiment Videos

Urinary volume in children with urolithiasis.

L A Miller1, F B Stapleton

  • 1Department of Pediatrics, University of Tennessee, Memphis.

The Journal of Urology
|April 1, 1989
PubMed
Summary

Children with idiopathic calcium oxalate urolithiasis have significantly lower urinary volume, indicating it

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Area of Science:

  • Pediatric Nephrology
  • Urology
  • Metabolic Disorders

Background:

  • Hypercalciuria and urolithiasis are significant concerns in pediatric populations.
  • Idiopathic calcium oxalate urolithiasis requires understanding of contributing risk factors.

Purpose of the Study:

  • To investigate urinary volume as a potential risk factor in children with hypercalciuria and urolithiasis.
  • To compare urinary volume in healthy children, those with hypercalciuria, and those with idiopathic calcium oxalate urolithiasis.

Main Methods:

  • 24-hour urine collections were analyzed in three groups of children: healthy controls, those with hypercalciuria, and those with idiopathic calcium oxalate urolithiasis.
  • Urinary volume (ml/kg/day), sodium excretion, and urine osmolality were measured and compared between groups.

Main Results:

  • Children with idiopathic calcium oxalate urolithiasis exhibited significantly lower urinary volume (12.2 ml/kg/day) compared to healthy controls (22.2 ml/kg/day) and hypercalciuric children (25.4 ml/kg/day).
  • Urinary volume was not significantly different between hypercalciuric children with and without urolithiasis.
  • Urinary sodium excretion and urine osmolality were similar across all studied groups.

Conclusions:

  • Reduced urinary volume is a critical risk factor for idiopathic calcium oxalate urolithiasis in children.
  • Increased fluid intake should be strongly recommended for pediatric patients diagnosed with idiopathic calcium oxalate urolithiasis.

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