What is the prognosis for patients with hyperkalemia (high serum potassium level)?

Updated: Apr 09, 2020
  • Author: Eleanor Lederer, MD, FASN; Chief Editor: Vecihi Batuman, MD, FASN  more...
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For patients with a defined and transient cause of hyperkalemia, the prognosis is excellent. With correction of the underlying causative condition, full resolution can be expected. However, patients who have ongoing risk factors for hyperkalemia are likely to experience recurrent episodes.

Sudden and rapid onset of hyperkalemia can be fatal. With slow or chronic increase in potassium levels, adaptation occurs via renal excretion, with fractional potassium excretion increasing by as much as 5-10 times the reference range.

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