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Hyperkalemia associated with indomethacin

R C Goldszer, E L Coodley, M J Rosner

    Archives of Internal Medicine
    |May 1, 1981
    PubMed
    Summary
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    Indomethacin can cause severe hyperkalemia by suppressing renin and aldosterone, leading to reduced kidney potassium excretion. This case highlights a rare but serious side effect of this common medication.

    Area of Science:

    • Nephrology
    • Pharmacology
    • Internal Medicine

    Background:

    • Hyperkalemia is a serious electrolyte imbalance with various causes.
    • Indomethacin is a nonsteroidal anti-inflammatory drug (NSAID) known to affect prostaglandin synthesis.

    Observation:

    • A patient developed significant hyperkalemia and ECG changes without typical causes.
    • The patient was taking indomethacin, which inhibits renin production and aldosterone excretion.

    Findings:

    • Rechallenge with indomethacin confirmed a hyporeninemic-hypoaldosteronism state.
    • This led to decreased renal potassium excretion and subsequent hyperkalemia.

    Implications:

    • Indomethacin can induce hyperkalemia through a specific hyporeninemic-hypoaldosteronism mechanism.

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  • Clinicians should consider indomethacin as a potential cause of hyperkalemia, especially when other causes are ruled out.