What is hypokalemia?
Hypokalemia is a condition where the potassium level in the blood is too low.
There are a number of symptoms associated with hypokalemia but the most commonly
noticed symptom is muscle weakness or pain, especially weakness of the neck. Other
symptoms are less specific and include weight loss, lack of appetite, poor quality
hair coat, and lethargy. Some cats with low blood potassium have no obvious signs.
How do cats get hypokalemia?
There are several ways that a cat can become hypokalemic but the most common
cause of hypokalemia is chronic renal insufficiency, or chronic renal failure.
In this condition, a cat loses excess potassium in the urine, is not able to
absorb enough from the stomach and intestines, and frequently is anorexic and
so does not take in enough potassium. Feline diets which are high in protein
or are used to make urine more acidic (urinary care diets) can make hypokalemia
worse.
How is hypokalemia diagnosed?
Hypokalemia is diagnosed from a blood sample. Potassium is measured in the serum
portion of the blood. The potassium measured is free potassium which is a very
small fraction of the total potassium in a cat's body. Most of the potassium
in the body is inside cells and can not be accurately measured. Measurement
of serum potassium level is a good but not always completely accurate measure
of total body potassium.
If a blood sample indicates that hypokalemia or chronic renal insufficiency
is present, appropriate treatment will be recommended. Once treatment is started,
a cat's blood potassium must be monitored to make sure it is at a safe level
- not too high or too low.
How is hypokalemia treated?
If a cat has very few symptoms or non-life threatening symptoms of hypokalemia,
an oral potassium supplement will be prescribed to treat hypokalemia. Cats that
are extremely weak and having breathing or heart problems will need to be hospitalized
for intravenous potassium supplementation. Cats that do not have symptoms of
hypokalemia but may have other symptoms such as vomiting or anorexia may be
hospitalized to treat the vomiting and dehydration. Potassium will likely be
given intravenously to these cats as well. Once a cat is out of the hospital,
oral potassium supplementation will be continued to make sure the blood potassium
level remains normal. Follow-ups to test blood potassium as well as other things
will be necessary.
My cat's potassium is low but he has no symptoms - should he be treated?
Cats that have hypokalemia but have no symptoms need to be treated with oral
potassium supplements. Low potassium contributes to renal damage and may make
kidney disease worse.
My cat's potassium is normal but he has chronic renal insufficiency - should
he be treated?
Cats that have blood potassium levels that are in the low half of the normal
range should be considered for treatment. Since blood potassium levels are not
100% accurate at measuring total body potassium, a potassium reading in the
low half of the normal range can indicate that total body potassium is low in
a cat with chronic renal insufficiency. Since preventing hypokalemia and its
associated continuing kidney damage is an important part of preserving a cat's
quality and length of life, cats with low normal blood potassium may need a
supplement. In most instances, any excess oral potassium given to the cat will
be eliminated in the urine. It is still very important to have the cat's blood
potassium monitored regularly.
Package Insert
RENAL K+™ POWDER
Vet Solutions
(Pottassium Gluconate)
A Potassium Supplement with B-Complex Vitamins
INGREDIENTS: Potassium Gluconate in a palatable base.
INDICATION: For use as a supplement in potassium deficient states in
cats and dogs.
DOSAGE: Each 530 mg (1 level scoop) contains 2.2mEq of potassium (as
potassium gluconate) in a palatable base. The suggested dose for adult cats
and dogs is 1 level scoop per 10 lbs (4.5 kg) body weight given orally twice
daily. Adjust dosage as needed.
ADMINISTRATION: RENAL K+ is a highly palatable powder that may be sprinkled
over dry food or mixed with a small amount of canned food.
PRECAUTION: Use with caution in the presence of cardiac disease, particularly
in digitalized patients.
WARNING: Do not administer to cats or dogs with acute, oliguric, anuric
or very advanced renal failure. Do not administer in other diseases where high
potassium levels may be encountered, such as adrenal insufficiency, acute dehydration
or urethral obstruction.
KEEP OUT OF THE REACH OF CHILDREN
SOLD EXCLUSIVELY THROUGH VETERINARIANS
Store at controlled room temperature