Acute Kidney Injury in Cats: A Veterinary Emergency
Acute kidney injury (AKI) is a sudden loss of kidney function — often caused by toxins, infections, or dehydration. Unlike chronic kidney disease, AKI can sometimes be reversed with prompt treatment.
Acute kidney injury (AKI) is a sudden, severe decline in kidney function that occurs over hours to days. Unlike chronic kidney disease (CKD) which develops gradually, AKI strikes suddenly and can be fatal without immediate treatment. Common causes include toxin ingestion (lilies, antifreeze), urinary blockage, severe dehydration, and infections. With aggressive early treatment, some cats recover full kidney function — but time is critical.
Key Points
- AKI is a sudden loss of kidney function — different from chronic kidney disease
- Lily ingestion is the #1 preventable cause of AKI in cats — even tiny amounts are fatal
- Antifreeze (ethylene glycol) is another major cause — sweet taste attracts cats
- Symptoms: sudden stop in urination, vomiting, lethargy, loss of appetite
- Early aggressive treatment with IV fluids can sometimes reverse the damage
- Prevention: keep lilies and antifreeze away from cats at all times
Common Causes
Toxins: lily plants (all parts — petals, leaves, pollen, water in vase), antifreeze (ethylene glycol), certain medications (NSAIDs like ibuprofen). Urinary blockage: especially in male cats — stones or crystals block the urethra. Dehydration: severe vomiting/diarrhea without fluid replacement. Infections: pyelonephritis (kidney infection). Low blood pressure: during anesthesia or from heart failure.
Symptoms
Sudden increase or decrease in urination. Vomiting (often the first sign). Lethargy and loss of appetite. Excessive thirst followed by no urination. Bad breath (uremic breath — ammonia-like smell). Dehydration — skin tenting, dry gums. In severe cases: seizures, collapse, coma. Note: a cat that STOPS urinating entirely may have a blockage — this is a separate emergency requiring immediate catheterization.
Emergency Treatment
Treatment is aggressive and time-critical: IV fluid therapy (the cornerstone — flushes toxins and supports kidney function). Anti-nausea medications. Gastric protectants. Monitoring urine output. Blood work every 12-24 hours to track kidney values. For antifreeze poisoning: fomepizole (antidote) must be given within 8 hours. For lily poisoning: IV fluids must start within 6 hours of ingestion for the best chance of survival.
Prognosis and Recovery
Prognosis depends on the cause and how quickly treatment begins. Lily ingestion: fatal without treatment within 3-7 days. With treatment within 6 hours, survival rates are good. Antifreeze: fatal without antidote within 24-48 hours. With early fomepizole treatment, survival is possible. Urinary blockage: excellent prognosis if unblocked within 24-48 hours. Some cats develop permanent CKD after AKI — regular monitoring is essential during recovery.
When to See a Vet Immediately
- Your cat has chewed or ingested any part of a lily plant — EMERGENCY, go immediately
- Your cat has suddenly stopped urinating or is straining with no output
- Your cat is vomiting repeatedly and appears lethargic
- Your cat has been exposed to antifreeze or any chemical
- Your cat's breath smells like ammonia
- Your cat has gone from drinking a lot to drinking nothing with no urination
How RVC Can Help
Royal Veterinary Center provides 24/7 emergency kidney care including IV fluid therapy, blood work monitoring, urinary catheterization for blockages, and intensive care for acute kidney injury. For suspected lily or antifreeze poisoning, call immediately — early treatment saves lives. We have the equipment and expertise to manage even the most critical kidney emergencies. Call +853 6677 6611.
This article is for educational purposes only and does not replace professional veterinary advice. If your pet is showing any symptoms, please contact Royal Veterinary Center immediately at +853 6677 6611.