Feline Chronic Kidney Disease: Welfare and Quality of Life Management

Chronic kidney disease (CKD) is the leading cause of death in older cats, affecting an estimated 30-40% of cats over 10 years old, with welfare implications around nausea, hypertension, and end-of-life decision-making.

Key Facts

CKD is staged from IRIS Stage 1 (early) to Stage 4 (end-stage renal failure)
Clinical signs include increased thirst and urination, weight loss, vomiting, and reduced appetite
Hypertension secondary to CKD causes target organ damage including retinal detachment and stroke
Phosphate restriction through diet and phosphate binders is the primary management strategy to slow progression

Welfare Considerations

Cats with uncontrolled CKD experience chronic nausea from uraemia, causing persistent inappetence and progressive weight loss. Hypertensive crises can cause sudden blindness and severe neurological signs, including acute disorientation and apparent distress. End-stage CKD involves uraemic encephalopathy, seizures, and profound weakness. Quality of life monitoring — appetite, grooming, interaction, and mobility — should guide treatment intensity and end-of-life decisions. Well-managed cats at early CKD stages can have excellent quality of life for years.

What You Can Do

Schedule regular blood pressure monitoring and IRIS staging for cats diagnosed with CKD
Transition to a phosphate-restricted renal diet with veterinary guidance
Monitor for hypertensive emergency signs: sudden behavioural change, enlarged pupils, apparent blindness
Use validated quality-of-life tools (VetMetrica, HHHHHMM) to track welfare over the disease course