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History and Clinical Findings

A 4-year-old spayed female indoor-only domestic shorthair cat was evaluated at the University of Wisconsin because of a 1-week history of progressive respiratory difficulty. The cat was being treated by the referring veterinarian with antimicrobials (metronidazole and orbifloxacin) as well as furosemide, with a resultant slight initial improvement in clinical signs. However, radiographic views obtained by the referring veterinarian after initiation of treatment revealed a dorsally deviated and compressed trachea, pleural effusion, and middle lung lobe consolidation.

On the day of the referral evaluation, the cat became anorectic and developed respiratory distress. On physical examination, the

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in Journal of the American Veterinary Medical Association

Abstract

OBJECTIVE To evaluate urine variables in chinchillas (Chinchilla lanigera).

DESIGN Evaluation study.

SAMPLE Urine samples from 41 chinchillas.

PROCEDURES Voided urine samples were collected from clinically normal chinchillas that were exhibited during a breeder exposition. Urinalysis was performed within 1 hour after collection. Urine specific gravity (USG) was measured before and after centrifugation with a handheld veterinary refractometer. Urine dipstick analysis and microscopic sedimentation examination were performed on all samples. Additionally, a urine sulfosalicylic acid (SSA) precipitation test and quantitative protein analysis were performed on samples with sufficient volume.

RESULTS 17 of 41 (41%) samples had a USG ≥ 1.050, and USG ranged from 1.014 to > 1.060. The USG before centrifugation did not differ significantly from that after centrifugation. Protein was detected in all urine samples on dipstick analysis. The SSA precipitation test yielded negative results for all samples tested. Results of the quantitative protein analyses were not correlated with the results of the dipstick analyses or SSA tests. The recorded pH for all samples was 8.5, which was the upper limit of detection for the reagent strip. Glucose and ketones were detected in 5 and 6 samples, respectively. Crystals were observed in 28 of 41 (68%) samples; 27 of those samples contained amorphous crystals.

CONCLUSIONS AND CLINICAL RELEVANCE Urinalysis results for clinically normal chinchillas were provided. For chinchilla urine samples, measurement of USG by refractometry prior to centrifugation is acceptable and protein concentration should be determined by quantitative protein analysis rather than dipstick analysis or the SSA test.

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in Journal of the American Veterinary Medical Association