Male cats are more prone to urinary blockage because their urethra gets very narrow as it passes through the penis. Obstructions may be caused by mucous plugs of inflammatory material or small crystals or stones passing from the bladder through the urethra.
signs of urinary obstruction
- straining to urinate
- frequent urination
- blood in urine
- firm, distended bladder (palpable through abdominal wall)
- crying in pain
- constant licking of genitalia
- loss of appetite
- depression (as toxins build up)
Cats that experience recurring or severe episodes of urethral obstruction may require a surgical procedure called Perineal Urethrostomy (PU).
Perineal urethrostomy does not prevent urinary tract inflammation or stone formation. However, the wider urethral opening (like the female anatomy) provides a wider passageway for plugs, crystals or small stones to be passed out. The likelihood of future obstruction will be decreased.