Cats with renal insufficiency cannot concentrate their urine despite being dehydrated. Therefore, a urine sample is very important to the evaluation of renal disease. The normal blood and urine values vary from lab to lab, but BUN 1.018 are relatively normal. The kidneys in cats with chronic renal insufficiency are often shrunken and irregular. Treatment of renal failure has three main goals.
Uremic toxins are chemicals and waste products normally excreted by the kidneys.
Uremic toxins are responsible for many of the signs of kidney disease. These are kept low with fluid therapy and dietary modification. When cats are ill, intravenous fluids are often required. For long term therapy, fluids can be given under the skin. The frequency and amount of fluids that a cat needs depends on the degree of damage to the kidneys.