Peer-reviewed veterinary case report
How often do cats pee a lot after urethral blockage clears
By Francis, Brenda J et al.·Published in Journal of feline medicine and surgery·2010·Department of Clinical Sciences, United States·View original on PubMed →
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Original publication title: Retrospective study to characterize post-obstructive diuresis in cats with urethral obstruction.
- Species:
- cat
Plain-English summary
A cat with a blocked urethra was treated at a veterinary hospital, and after the blockage was resolved, nearly half of the cats experienced a significant increase in urine output, known as post-obstructive diuresis. This condition happened in 46% of the cats within the first six hours after treatment. Cats that had a lower blood pH when admitted were more likely to experience this increased urine production. It's important for pet owners to monitor their cat's urine output after such treatment, as many will need more fluids to stay hydrated.
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Abstract
Urethral obstruction is a common medical emergency in cats. Frequency of post-obstruction diuresis in cats following resolution of urethral obstruction is unknown. The objective of this study was to document frequency and associated clinical features of post-obstruction diuresis in cats. The records of 32 cats undergoing 33 admissions to the Colorado State University Veterinary Hospital for urethral obstruction were reviewed. Signalment, admission blood values, fluid therapy, and urine output were recorded. Diuresis was defined as urine output greater than 2ml/kg/h. Post-obstructive diuresis occurred in 46% (13/28) of cats within the first 6h of treatment. Occurrence of post-obstructive diuresis was statistically more likely in cats with venous pH<7.35 on admission. Urine production following resolution of urethral obstruction should be monitored so that fluid therapy can be adjusted to the individual patient, as many cats will have a higher fluid requirement secondary to post-obstruction diuresis.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/20655493/