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Potassium Supplements Without a Diuretic

Often we intentionally contribute to the prescribing cascade.  Potassium supplements with a diuretic is one of those scenarios, but I want to teach you about what to think about when you see potassium supplements without a diuretic.

  1. What’s the potassium level?  If you find a patient with a potassium level in the mid 4 range or higher with no significant medical issues that might contribute to hypokalemia, I would be looking to reduce the potassium supplement dose or potentially discontinue it altogether if they are on a relatively low dose – say 10-20 meq per day.
  2. Have they been on diuretics recently?  This is one of the most common scenarios that I have come across.  The diuretic is no longer necessary, gets discontinued, but the provider forgot about the potassium supplement because the potassium is within the normal range.
  3. Do they have a history of dehydration that caused the hypokalemia requiring supplementation?  If the dehydration was a fluke event and all is well now, the patient may be able to come off that supplement.
  4. Does the patient have any insight on why they are on it?  This can help you identify what the initial problem was even if you don’t have access to or can’t tell from the medical records.
  5. Is there another condition that might contribute to hypokalemia?  Diarrhea/vomiting, diabetic ketoacidosis, and history of alcoholism are a few examples of potential medical problems that can contribute to hypokalemia.  If a patient has chronic problems, it may be harder to discontinue the potassium supplement even they aren’t on a diuretic.

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Written By Eric Christianson

June 11, 2017

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