Cats
Anuria is defined as complete suppression of urine production by the kidneys. In a normal healthy animal, the kidney produces one to two ml of urine per kilogram of body weight every hour. If the kidney produces less than 1 ml/kg/hr, the cat is considered oliguric, which means there is little urine produced. If no urine is produced, anuria is diagnosed.
Anuria is most often associated with acute kidney failure. Urinary obstruction, such as due to a bladder stone, does result in inability to pass urine but does NOT result in the kidney being unable to produce urine. This is an important distinction between anuria and urinary obstruction. Both are treated very differently.
Acute kidney failure has many known causes such as high blood calcium, antifreeze, various drugs, dehydration, bleeding, Addison's disease, congestive heart failure, anesthesia, blood clots and infections. All of these can result in anuria in cats.
Cats with anuria are usually quite ill. Straining to urinate is not part of anuria. That symptom is more likely to be associated with urinary obstruction. Cats with anuria do not have any urine produced and therefore do not feel the urge to void urine.
Anuria is a serious and potentially fatal symptom of acute kidney failure. Emergency treatment is necessary in order to give the cat any chance of recovery. Cats with anuria have a poor prognosis and many do not recover.
Physical examination can help lead your veterinarian to a suspicion of anuria. The cat is usually depressed and dehydrated. Abdominal palpation will reveal an empty bladder. The kidneys may be swollen and painful.
Anuria is diagnosed when there is no urine production. Finding the cause of the acute kidney failure may be difficult. In order to diagnose the cause of the acute kidney failure, blood tests, radiographs (x-rays), ultrasound, specialized blood tests or biopsy may be necessary.
In order to confirm the lack of urine production, an indwelling urinary catheter may be placed and urine production monitored. When no urine is produced, anuria is diagnosed and treatment is immediately instituted.
Before treatment, an accurate weight is obtained and a urinary catheter may be placed to accurately measure urine production and to help guide treatment.
Your veterinarian will administer intravenous fluids using extreme care; the fluid rate must be carefully monitored since it is quite easy to overhydrate an anuric cat. A cat that is unable to produce urine cannot handle high fluid rates that are normally used in dehydrated animals. If the kidneys are unable to process the intravenous fluids, these fluids will accumulate in body tissues, resulting in body swelling and weight gain.
In addition to intravenous fluids, there are several drugs that are used to stimulate urine production. These drugs use different methods to affect the kidney and urine production.
There is no home care for anuria. If you suspect that your cat is not producing urine, see your veterinarian immediately. Treatment must begin as soon as possible in order to give your cat any chance of recovery.
Prevent exposure to substances that may result in acute kidney failure. Antifreeze is the most common cause of acute kidney failure in pets. Do not allow your cats to roam unattended.
Make sure your cat has plenty of fresh clean water available at all times. If your cat is ill, examination and treatment should begin as soon as possible. Do not delay until veterinary care. If you wait until the kidneys completely stop functioning, the chance of recovery is slim.
Copyright © 2005-2016 Pet Information All Rights Reserved
Contact us: www162date@outlook.com