Kidney Failure (Uremia) Symptoms in Cats (2024)

Your cat’s kidneys do many important things. They help manage blood pressure, make hormones, stimulate the bone marrow to make more red blood cells, and remove waste from the blood.

Cats’ kidneys can begin to fail with age. Untreated, kidney disease can lead to a series of health problems. When it’s chronic, there’s no cure. But with early diagnosis and good care, you can help boost both the quality and length of your pet’s life.

Older cats aren’t the only ones at risk. Kittens can be born with kidney diseases. Trauma, toxins, and infection are also causes.

Types of Kidney Disease

There are two types of kidney failure in cats. Each has different causes, treatments, and outlooks.

Acute renal failure develops suddenly, over a matter of days or weeks. It happens in cats of all ages and is usually the result of:

  • Poisons, which are the most common cause of acute renal failure. Antifreeze, toxic plants like lilies, pesticides, cleaning fluids, and certain human medications are highly poisonous to your cat’s kidneys. Even a single tablet of ibuprofen can lead to their kidneys shutting down. Check around your house and garage for these substances and make sure your cat can’t get into them.
  • Trauma, especially involving a broken pelvis or burst bladder
  • Shock from losing a lot of blood quickly or rapid dehydration; overheating in hot weather, a significant rise in activity, vomiting, and diarrhea can all cause a big dip in fluids.
  • Infection in the kidneys
  • Blockages that change the flow of blood into the kidney and the flow of urine out of it (such as in a male cat that can't pee because of aurethral blockage)
  • Heart failure with low blood pressure, which reduces blood flow to the kidneys

If diagnosed in time, acute renal failure can often be reversed. But chronickidney problems can be harder to treat. Found mostly in middle-aged and older cats, they develop over months and even years. If your cat is 7 years or older, pay special attention to their health.

While the exact causes of chronic kidney disease aren’t always clear, even to vets, they include:

  • Kidney infections and blockages, which may not result in acute renal failure, but wear down kidney function at a low level for months or years
  • Other conditions, from advanced dental disease and high blood pressure to thyroid problems and cancer

11 Signs Your Cat’s Kidneys May Be Failing

  • Frequent urinating. While you might think this is a sign your cat’s kidneys are working well, it actually means they are no longer able to hold water. Urinating outside theirlitter box is another signal.
  • Drinking a lot of water; this means your cat is trying to replace the fluid they havelost through urinating.
  • Bacterial infections of the bladder and kidney; these develop more easily in the dilute urine produced by failing kidneys.
  • Weight loss and decreased appetite
  • Vomiting, diarrhea, and bloody or cloudy urine
  • Mouth ulcers, especially on the gums and tongue
  • Bad breath with an ammonia-like odor
  • A brownish-colored tongue
  • A dry coat
  • Constipation
  • Weakness and indifference

Diagnosis and Treatment

Your vet will do blood and urine tests. X-rays, an ultrasound (an image of your cat’s insides), or biopsy (tissue sample) might also be needed to make a diagnosis. If kidney disease is found, treatments can range from surgery to remove blockages to IV fluids to a special diet and medications. You may also be able to inject fluids under your cat’s skin at home. Talk to your vet about the best options.

A kidney diet is low in both phosphorus and protein, and is enriched with vitamin D and omega-3 fatty acids. Remember that it’s important to introduce your cat to new foods gradually. Your vet can advise you how to make this transition an easy one.

With a carefully managed diet.plenty of clean freshwater,a serene environment,and regular check-ups, you can help your cat live their best life possible.

Kidney Failure (Uremia) Symptoms in Cats (2024)

FAQs

What are the symptoms of end stage kidney failure in cats? ›

Symptoms of end stage kidney failure in cats include dull sunken eyes, inability to walk, body odour, incontinence in bladder or bowels, refusal to eat or drink, seizures, confusion, pacing and restlessness, withdrawing, hiding and running away.

What causes uremia in cats? ›

Uncompensated kidney failure leads to uremia, a condition in which poisonous waste products accumulate in the body, and body fluids and electrolytes are not kept in balance. This is a serious and life-threatening condition, which may require intensive hospital care.

How long does end stage kidney failure last in cats? ›

Cats in stage four kidney disease had a median survival of only 1.16 months (35 days). Overall median survival time was calculated as 2.1 years (771 days) from the time of diagnosis.
...
Diagnosis and prognosis.
StageSerum creatinine mg/dl (μmol/litre)
1<1.6 (<140)
21.6–2.8 (140–250)
32.9–5.0 (251–440)
4>5.0 (>440)
May 2, 2017

Is end stage kidney failure in cats painful? ›

In cases of end-stage renal failure, there is typically no pain associated with the kidneys. The big concern in cats with kidney failure is quality of life, because rather than feeling pain, they may feel sick and have nausea and weakness due to the buildup of uremic toxins.

Are cats in pain during kidney failure? ›

Functions of the kidney

A cat suffering from CKD is likely to be experiencing both physical and emotional pain due to the number of side effects associated with the disease; vomiting, dehydration and anorexia for example.

How do you know when it's time to euthanize a cat in kidney failure? ›

Their appetite no longer responds to appetite stimulants. Their weight seems to be melting away. They drink and urinate excessively (in the very end stages, they often stop drinking and urinating altogether). They may develop vomiting and diarrhea.

What is the earliest and most prominent symptom of uremia? ›

Symptoms of uremia

At the beginning of chronic kidney disease, you may not notice any symptoms. However, by the time uremia has started, your kidneys are very damaged. Uremia may cause you to have some of the following symptoms: extreme tiredness or fatigue.

How do you confirm uremia? ›

Creatinine and BUN blood tests help your provider confirm a diagnosis of uremia. These tests check your blood for high levels of waste products. They also used to estimate your glomerular filtration rate (eGFR). This rate measures your kidney function.

What is a symptom of severe uremia? ›

Patients presenting with uremia typically complain of nausea, vomiting, fatigue, anorexia, weight loss, muscle cramps, pruritus, or changes in mental status. The clinical presentation of uremia can be explained by the metabolic disturbances associated with the condition.

Can cats bounce back from kidney failure? ›

Unfortunately, once the kidneys are damaged, they have very limited ability to recover. However, with proper management, most CRF cases progress very slowly. With treatment, your cat may have several years of good quality, active life ahead.

Do cats meow a lot with kidney disease? ›

Kidney disease can cause high blood pressure and, conceivably, excess vocalization. However, these cats usually have other symptoms that show up first, including increased water intake, increased urination and decreased appetite. Another possibility is hyperthyroidism.

How do you prolong a cat's life with kidney failure? ›

Dietary modification is an important and proven aspect of CKD treatment. Studies suggest that therapeutic diets that are restricted in protein, phosphorus and sodium content and high in water-soluble vitamins, fiber, and antioxidant concentrations may prolong life and improve quality of life in cats with CKD.

What happens in last stage of kidney failure? ›

The patient's kidneys gradually lose their ability to filter waste and extra water from the blood, creating a build-up within the body, which is terminal when left untreated. At this point, the patient needs dialysis or a kidney transplant.

Why do cats with kidney disease stop eating? ›

Kidney disease is common in older cats and may cause your kitty to feel nauseated, which could lead to a refusal to eat. Other symptoms of kidney disease include drinking lots of water and urinating frequently.

Do cats pee with kidney failure? ›

Even when they do, the first signals of kidney disease in cats are easy to miss, including subtle weight loss, urinating/peeing more often and drinking more water. Therefore, if you notice your cat is peeing on the floor, soaking the litter box, or if your cat is always thirsty, it's time to visit your veterinarian.

Can kidney failure in cats be stopped? ›

Treatment for kidney disease in cats

Acute renal failure in cats (ARF) is potentially reversible if diagnosed early and treated aggressively. A cat with ARF will require admission into the veterinary hospital for intravenous fluid support to correct rehydration, flush out toxins and balance electrolytes.

How do you comfort a cat with kidney failure? ›

Ways To Help Cats with CKD
  1. Diet Modifications. A prescription diet restricting protein and phosphorus may be one of the first changes recommended with early renal disease. ...
  2. Medications. ...
  3. Hydration. ...
  4. Subcutaneous Fluids. ...
  5. Reduce Stress.
Feb 1, 2021

Should I put my cat down with kidney disease? ›

If you've witnessed your cat's condition gradually decline, and the blood work is not improving, it's time to make a decision about euthanasia. Questions like, “How much suffering is too much?” will be on your mind. Because you know your cat best, you are the best judge of your cat's quality of life.

Is uremia painful? ›

Uremia may also be painful. Uremia is reversible if treated quickly; however, permanent damage to the kidneys may occur. Kidney failure may also result from the underlying processes that cause uremia. Treatment for uremia frequently requires hospitalization.

What is the best treatment for uremia? ›

The ultimate treatment for uremia is renal replacement therapy, which can be accomplished by hemodialysis, peritoneal dialysis, or kidney transplantation.

What foods to avoid if urea is high? ›

Don't eat ham, bacon, sausage, hot dogs, lunch meats, chicken tenders or nuggets, or regular canned soup. Only eat reduced-sodium soups that don't have potassium chloride as an ingredient (check the food label.) Also, only eat 1 cup, not the whole can.

How long can you live with uremia? ›

As per the United States Renal Data System report, expected survival for patients could vary from 8 years (for patients aged 40 to 44) to 4.5 years (patients between 60 to 64 years of age).

When does uremia become symptomatic? ›

Uremia usually develops only after the creatinine clearance falls to less than 10 mL/min, although some patients may be symptomatic at higher clearance levels, especially if renal failure develops acutely. The syndrome may be heralded by the clinical onset of the following symptoms: Nausea. Vomiting.

What toxins cause uremia? ›

Bacteria derived uremic toxins include indoxyl sulfate, hippuric acid, p-cresol, and 3-carboxy-4-methyl-5-propyl-2-furanpropionic acid.

What is terminal uremia? ›

Uremic syndrome can be defined as the terminal clinical manifestation of kidney failure (also called renal failure). It is the signs, symptoms and results from laboratory tests which result from inadequate excretory, regulatory, and endocrine function of the kidneys.

How to lower urea levels? ›

Blood urea levels can be lowered by consuming less protein and avoiding products that contain creatinine. Carrots and potatoes, for example, help to alkalize urine and lessen the effects of high blood urea levels. Cinnamon, lemon, red bell pepper, turmeric, and other healthy foods can also be used to lower the BUN.

Can Diuretics cure uremia? ›

Diuretics cause uremia and may lead to false diagnosis of chronic renal failure and nonrecovery of renal function. The patient may unnecessarily require prolonged dialysis.

Is cooked chicken good for cats with kidney disease? ›

As obligate carnivores, cats need species-appropriate proteins that are easily digestible. Proteins such as turkey and chicken are a safe choice for cats with kidney diseases.

What can you not feed a cat with kidney disease? ›

High salt (sodium) diets may increase blood pressure and may worsen kidney damage, so diets designed for pets with kidney disease are low in sodium. You should also avoid feeding high salt treats such as cheese, bread, deli meat, and many commercial dog and cat treats.

What are the 3 early warning signs of kidney disease? ›

Signs of Kidney Disease
  • You're more tired, have less energy or are having trouble concentrating. ...
  • You're having trouble sleeping. ...
  • You have dry and itchy skin. ...
  • You feel the need to urinate more often. ...
  • You see blood in your urine. ...
  • Your urine is foamy. ...
  • You're experiencing persistent puffiness around your eyes.
Dec 17, 2020

Where does uremia come from? ›

Uremia is a dangerous medical condition that causes urea to accumulate in the blood. Urea is the waste that the kidneys usually help to filter away. Uremia is a symptom of kidney failure.

Can uremia be reversed? ›

Uremia is reversible if treated quickly; however, permanent damage to the kidneys may occur. Kidney failure may also result from the underlying processes that cause uremia. Treatment for uremia frequently requires hospitalization.

How does uremia cause death? ›

Severe complications of untreated uremia include seizure, coma, cardiac arrest, and death. Spontaneous bleeding can occur with severe uremia and may include gastrointestinal (GI) bleeding, spontaneous subdural hematomas, increased bleeding from any underlying disorder, or bleeding associated with trauma.

What does uremia smell like? ›

Uremic fetor is a urine-like odor on the breath of people with uremia. The odor occurs from the smell of ammonia, which is created in the saliva as a breakdown product of urea. Uremic fetor is usually associated with an unpleasant metallic taste (dysgeusia) and can be a symptom of chronic kidney disease.

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