Comparison of body condition score and urinalysis variables between dogs with and without calcium oxalate uroliths

Stephanie M. Kennedy, Jody P. Lulich, Michelle G. Ritt, Eva Furrow

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

OBJECTIVE To compare body condition score (BCS) and urinalysis variables between dogs with and without calcium oxalate (CaOx) uroliths. DESIGN Case-control study. ANIMALS 46 Miniature Schnauzers, 16 Bichons Frises, and 6 Shih Tzus. PROCEDURES Medical records were reviewed for Miniature Schnauzers, Bichons Frises, and Shih Tzus that were examined between January 2001 and November 2014 for another urolithiasis study or for a urolith removal procedure. Dogs with CaOx uroliths were classified as cases. Dogs without a history of urinary tract disease and with no evidence of radiopaque uroliths on abdominal radiographs were classified as controls. Each case was matched with 1 control on the basis of age (± 2 years), sex, and breed. Body condition score and urinalysis results were compared between cases and controls, and the relationship between BCS and urine pH was analyzed. RESULTS Median BCS was significantly greater for cases than controls, although the proportion of overweight dogs did not differ significantly between the 2 groups. Urine pH was negatively associated with age, but was not associated with BCS or the presence of CaOx uroliths. Cases infrequently had acidic urine or CaOx crystalluria but frequently had hematuria and proteinuria. CONCLUSIONS AND CLINICAL RELEVANCE Results indicated that dogs with CaOx uroliths had a greater median BCS than control dogs, but the clinical importance of that finding was unclear. Acidic urine and CaOx crystalluria were uncommon and not adequate predictors of CaOx urolith status. Hematuria and proteinuria were commonly observed in dogs with CaOx urolithiasis, but they are not pathognomonic for that condition.

Original languageEnglish (US)
Pages (from-to)1274-1280
Number of pages7
JournalJournal of the American Veterinary Medical Association
Volume249
Issue number11
DOIs
StatePublished - Dec 1 2016

Bibliographical note

Funding Information:
Supported in part by a Morris Animal Foundation(MAF) grant (No. D12CA-031). Dr. Furrow was supported by a National Institutes of Health Office of Research Infrastructure Programs K01Mentored Research Scientist Development Award (1K01OD019912-01). The authors thank Aaron Rendahl for statistical support.

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