Renal disease is a relatively common condition diagnosed in geriatric animals. It is defined as the inability of the kidneys to perform their normal functions such as excretion of protein waste products and fluid regulation. The kidney cells lose function resulting in improper blood levels of urea and creatinine. The imbalance of urea makes the animal feel nauseated, lethargic and depressed. Initially owners may notice their pet is losing weight and shows little interest in eating. Other signs of kidney failure may include vomiting, dehydration and constipation.
Diagnosing Renal Failure To diagnose renal failure, the doctor will start with a comprehensive physical exam. Next, samples of blood and urine are collected. The pet's levels of urea (protein by-product) and creatinine in the blood are compared to a range of normal levels. A urinalysis is completed and the concentration level of the urine is measured. Elevated urea and creatinine values along with dilute urine are consistent with renal failure.
What happens next? When a cat or dog is diagnosed with renal failure, a few options may be considered:
For cats: begin fluid therapy to rehydrate the animal and flush out the kidneys to restore the proper balance of urea and creatinine.
For dogs and cats: start your pet on a prescription diet that has less protein to decrease the kidney work load.
Clients have the right to decline any treatment, and may take the pet home or elect euthanasia.
Fluid Therapy The goal of fluid therapy is to make the cat more comfortable and slow the progression of the condition. By flushing out the kidneys, it lessens the symptoms of renal failure. Cats begin to eat more regularly and show more energy. Renal failure patients need their body weight, lab tests and overall condition re-evaluated every two to four months.
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