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  • Title: Correlation of gross urine color with diagnostic findings in male cats with naturally occurring urethral obstruction.
    Author: Brabson TL, Bloch CP, Johnson JA.
    Journal: J Feline Med Surg; 2015 Jun; 17(6):453-7. PubMed ID: 25117491.
    Abstract:
    Seventy-five male cats with urethral obstruction were prospectively enrolled to evaluate gross urine color at urinary catheter placement for correlation with diagnostic findings. Cats with darker red urine were more likely to be azotemic (serum creatinine concentration >2.0 mg/dl [177 µmol/l]), and urine color correlated well with serum creatinine and serum potassium concentrations. Darker urine color was negatively correlated with urine specific gravity. Urine color was not associated with the presence or absence of lower urinary tract stones on radiographs or ultrasound. Cats with darker red urine at the time of urinary catheter placement are likely to have more significant metabolic derangements and may require more aggressive supportive care.
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