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Urolithiasis pp 563-565 | Cite as

Should Idiopathic Calcium-Phosphate Stones be Separated from Calcium-Oxalate Stones?

  • M. H. Gault
  • B. Barrett
  • P. Parfrey
  • W. Robertson
  • M. Paul
  • J. Harnett
  • V. Prabhakaran
  • L. Chafe
  • J. Morgan

Abstract

In many studies, idiopathic calcium-phosphate and calcium-oxalate stones are grouped together as calcium stones, yet calcium-phosphate stones may be the second commonest type submitted for analysis in some areas. In 12 reports from five countries, calcium-phosphate stones averaged 9% of 40,000 stones and in Newfoundland, 12% of 4014 stones analyzed (1). Based on prevalence studies (2), we estimate that our Renal Laboratory receives for analysis from the Newfoundland population 15–20% of stones passed spontaneously or removed.

Keywords

Titratable Acid Ammonium Chloride Renal Tubular Acidosis Calcium Stone Stone Composition 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    MH Gault, PS Parfray, and W Robertson, Idiopathic calcium phosphate nephrolithiasis, Nephron 48: 265 (1988).PubMedCrossRefGoogle Scholar
  2. 2.
    MH Gault, The oxalate: phosphate ratio in urinary trace calculi by infrared revised analysis (Letter to the Editor), Clin. Chim. Acta 166: 103 (1987).PubMedCrossRefGoogle Scholar
  3. 3.
    DN Churchill, CM Maloney, JC Bear, DG Bryant, G Fodor, and MH Gault, Urolithiasis-a study of drinking water hardness and genetic factors, J. Chron. Dis. 33: 727 (1980).PubMedCrossRefGoogle Scholar
  4. 4.
    WG Robertson, Urinary tract calculi, in: “Metabolic Bone and Stone Disease,” BEC Nordin, ed., Churchill Livingstone, New York (1984).Google Scholar

Copyright information

© Springer Science+Business Media New York 1989

Authors and Affiliations

  • M. H. Gault
    • 1
  • B. Barrett
    • 1
  • P. Parfrey
    • 1
  • W. Robertson
    • 2
  • M. Paul
    • 1
  • J. Harnett
    • 1
  • V. Prabhakaran
    • 1
  • L. Chafe
    • 1
  • J. Morgan
    • 1
  1. 1.The Renal Laboratory of the General HospitalMemorial UniversitySt. John’sCanada
  2. 2.King Faisal Specialist Hospital and Research CenterRiyadhSA

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