Kidney disease used to be known as kidney failure and you may therefore see references in some of my links to chronic renal failure crf or acute renal failure arf. There are a number of different stages of cat kidney disease and they generally correspond to a difference in kidney function and overall health in your cat.
If action is taken at this stage progression to stages iii and iv will be delayed.
Chronic kidney disease cats stages. This is estimated based on the level of waste products in the blood and abnormalities in the urine. The associated nephron damage is progressive and irreversible even though some cats with ckd have stable serum creatinine concentrations for months to years. Chronic kidney disease ckd is the persistent loss of kidney function over time.
Chronic kidney disease is divided into four stages. The journal of veterinary internal medicine ran another study on cats with chronic kidney disease. Stages i and ii are referred to as renal insufficiency.
The end stage of kidney function is the last and most severe of these stages. In chronic kidney disease the kidneys will begin to struggle over time. Stages iii and iv are unfortunately terminal.
Ckd is a generally slowly progressive disorder caused by chronic tubulointerstitial nephritis and interstitial fibrosis in most cases. I am part of a feline chronic kidney disease support group on fb and every day i see posts from pet parents of newly diagnosed stage 4 ckd kitties. Diagnosing the early stages of chronic kidney disease in cats is the goal as this disease can be managed.
Chronic kidney disease ckd affects an estimated 1 to 3 of all cats. Cats can compensate for months to years in chronic disease and owners can usually note changes in their health that have happened over time. 1 this important cause of mortality in cats develops over a period of months or years.
Chronic kidney disease ckd is a very common finding in mature cats potentially affecting over 30 of cats over 10 years of age. Please consult with your vet when treating feline chronic kidney disease feline ckd or any other ailment. Your vet will note that your cat s urine is not being concentrated which is a clear sign that the kidneys are failing.
Chronic kidney disease is staged depending on the severity. As this happens toxins can begin to build up in the blood as kidney tissue begins to die. The international renal interest society iris developed a method to gauge the severity of the disease in four stages.
In this case the survival rates were. Often their vets give them no hope. Stage 2 renal failure treatment includes everything in stage 1 plus a potassium supplement.
Stage 2 kidney disease in cats will show creatinine levels above 2 2. Stage 1 is the least severe and stage 4 is the most severe. I used to use these expressions myself but these days the academic literature prefers the less scary and more accurate expression kidney disease so that is what i use.
At this stage the concern is not life threatening. Healthy kidneys perform many important functions most notably filtering the blood and making urine so problems with kidney function can result in a variety of health problems for a cat.