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What is Low Blood Potassium?

Low blood potassium is a medical condition commonly referred to by veterinarians as hypokalemia. It occurs when the levels of potassium in the cat’s blood drop below an acceptable level. Potassium is a necessary electrolyte found in the blood that is required for the normal function of muscles and bodily systems. Hypokalemia can occur in cats that are sick or suffering from fluid loss due to vomiting or diarrhea. In mild to moderate cases that are related to other illnesses, low blood potassium may not be a concern. In moderate or more severe cases, low blood potassium results in extreme muscle weakness and can make walking or holding up the weight of the head difficult. When hypokalemia presents in more severe cases, it has the potential to cause muscle paralysis, which can affect the lungs and heart. Its potential to disrupt proper respiratory and cardiac function can be life-threatening and requires immediate medical attention. 

Low Blood Potassium Average Cost

From 499 quotes ranging from $200 - $2,000

Average Cost

$600

Symptoms of Low Blood Potassium in Cats

A cat with low blood potassium may not present any symptoms unless the potassium levels are extremely low or the condition has been ongoing for a prolonged period. The most common symptoms associated with low levels of potassium are weakness and an inability to hold the head up, resulting in a drooped head or irregularly bent neck. Depending on the underlying cause of the decrease in potassium, other symptoms may be observed. 

Symptoms include:

  • Lethargy
  • Lack of appetite
  • Vomiting 
  • Diarrhea 
  • Weight loss or loss of muscle mass
  • Pain and associated vocalizations
  • Moderate to extreme weakness
  • Difficulty getting up or walking
  • Inability to support head weight
  • Trouble breathing
  • Muscle paralysis
  • Respiratory failure
  • Nervous disorders and depression
  • Heartbeat irregularities
  • Cardiac arrest
  • Poor growth
  • Poor coat quality
  • Increased drinking and urination
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Causes of Low Blood Potassium in Cats

Loss of blood potassium most commonly occurs from one of three presentations. Either the cat has increased excretion of potassium, suffers from inadequate intake, or potassium is being redistributed within their body. These presentations can be a result of a variety of causes. Common causes of low blood potassium in cats include:

  • Chronic kidney disease
  • Excessive or prolonged vomiting or diarrhea
  • Diabetes and related conditions, including ketoacidosis and administered insulin or glucose
  • Severe lack of potassium in diet
  • Administration of intravenous fluids that either lack potassium or increase urination
  • Severe or prolonged anorexia or malnutrition
  • Certain medications
  • Metabolic diseases and disorders, including hyperthyroidism or alkalosis
  • Some types of cancer, including aldosterone-secreting tumors
  • Barium poisoning
  • Intestinal obstruction
  • Strong emotional responses like stress and anxiety 
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Diagnosis of Low Blood Potassium in Cats

Your veterinarian will determine if the cat’s blood potassium levels are within normal range by drawing blood and using standard laboratory testing methods. Your pet’s blood sample will be analyzed for a complete blood count, biochemistry panel, and electrolyte panel. In conjunction with the blood test, your veterinarian will require a complete medical history of your cat and information on any symptoms you have observed or conditions that might have affected the animal’s electrolyte balance. Be prepared to discuss any medications, medical treatments, and the cat’s regular diet. A routine physical examination will also likely be conducted. If your pet’s blood potassium levels are determined to be low, additional testing may be needed to determine the underlying cause of the condition, unless the cause is an obvious one. Urine or fecal samples may be analyzed. Veterinary staff may also use x-rays or other imaging techniques to determine the cause of your pet’s electrolyte imbalance. 

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Treatment of Low Blood Potassium in Cats

Treatment methods may vary depending on the underlying cause of low potassium in the blood. In severe cases, hospitalization will be required while your pet is being treated. Hospitalization may be prolonged as it is important for your pet to be supported until muscle weakness is no longer a problem. This is due to the potential for respiratory or cardiac failure. Some treatment methods that are commonly used for low blood potassium include:

Potassium Supplementation

The primary goal of treatment for low blood potassium is to restore the potassium levels to a normal range. This is generally accomplished with supplementation. If your pet is well enough, oral supplements will be provided. Intravenous supplementation may be required in some cases. Your cat will require monitoring of blood potassium levels during the initial supplementation phase. The use of potassium supplements could be temporary but may require use on a long-term or permanent basis depending on the underlying cause of the condition. They are generally administered in smaller doses to lower the risk of cardiac disruption. More rapid delivery may be deemed necessary if your cat’s condition is poor. Close monitoring of levels will also mitigate the associated risk. 

Oxygen Therapy 

Oxygen may be provided using tubing, a mask, or an oxygen cage. This is an important treatment for cats that are experiencing difficulty breathing. Oxygen therapy will be provided during hospitalization or while visiting the veterinarian. It carries a very low risk of side effects. 

Intravenous (IV) Fluid Therapy

This treatment will only be prescribed if dehydration is an issue or intravenous potassium supplementation is required. Although IV fluids are considered a common and relatively low-risk treatment, the use of fluids that do not contain potassium could potentially worsen the condition. This treatment method is generally only used while the animal is hospitalized. 

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Recovery of Low Blood Potassium in Cats

Your cat’s prognosis will depend greatly on the underlying condition that resulted in low blood potassium. With potassium supplementation, levels are usually restored to normal ranges fairly easily. In most cases, the cat’s condition will improve rapidly once potassium levels in the blood are restored. Continued supplementation may be required, however. Be sure to follow all your veterinarian’s instructions while your pet is recovering, including proper dosing of any medications and returning for requested follow-up visits. If long-term potassium supplementation is required, ensure you only use the prescribed amount and continue to monitor your cat closely for signs of low or high potassium levels. Your pet may require continued follow-up visits for a prolonged period in these cases.

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Low Blood Potassium Average Cost

From 499 quotes ranging from $200 - $2,000

Average Cost

$600

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Low Blood Potassium Questions and Advice from Veterinary Professionals

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Unknown

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5 weeks

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Unknown severity

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0 found helpful

pill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filled

Unknown severity

Has Symptoms

Neck Turned To Left

she is 5 weeks old she was fine went to sleep, when she woke up her head was turned to the left. shes walking in circles and meowing

Sept. 29, 2020

Owner

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Dr. Michele K. DVM

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0 Recommendations

Thank you for your question. Kittens can have infections that can affect their neurologic function, and they can have different things that affect their brains that occurred when they were born. Since this seems to have come on all of a sudden from your description, it would probably be a good idea to have a veterinarian examine the kitten, as they can look at the neurologic status and see what might be going on that's causing this. Once they know more, they'll be able to let you know what treatment needs to happen, if any. I hope that all goes well with the kitten.

Sept. 30, 2020

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Siamese

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One Year

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Unknown severity

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0 found helpful

pill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filled

Unknown severity

Has Symptoms

Can’T Get Up, Eyes Moving Side To Side

My cat can’t get up and her eyes are moving side to side

Sept. 26, 2020

Owner

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Dr. Michele K. DVM

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0 Recommendations

Thank you for your question. It would be best to have your pet seen by a veterinarian, as they can examine your pet, see what might be going on, and get treatment for them if needed.

Oct. 17, 2020

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Low Blood Potassium Average Cost

From 499 quotes ranging from $200 - $2,000

Average Cost

$600

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