Why is a urinary blockage so dangerous?
When urine cannot leave the bladder, pressure rises and dangerous electrolyte abnormalities can develop. Potassium may increase and affect the heart. Kidney function can deteriorate. A blocked cat can also look constipated because the straining posture is similar.
What causes blockage?
Feline lower urinary tract disease may involve urethral plugs, inflammatory debris, crystals, stones or severe urethral spasm. Male cats are at greater risk of complete obstruction because the urethra is longer and narrower.
What will the veterinarian do?
The team may assess bladder size, hydration, heart rate, kidney values and electrolytes, then relieve a confirmed obstruction—commonly with urinary catheterization and stabilization. Urinalysis and imaging may help identify contributing factors.
What should I never do at home?
Do not squeeze the bladder, give leftover medication, or assume a few drops of urine mean the cat is safe. After treatment, recurrence prevention may include hydration, diet, stress reduction, litter-box management and follow-up tailored to the individual cat.
Related VetWel guides
See kidney disease signs in cats, increased thirst in cats and routine veterinary checkups.