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Indomethacin- and Moduretic--induced hyperkalemia
Israel Journal of Medical Sciences
|June 1, 1983
Abstract:
Simultaneous administration of indomethacin and Moduretic (Merck Sharp & Dohme, USA, 5 mg of amiloride HCl, 50 mg hydrochlorothiazide) to a 78-yr-old patient resulted in severe hyperkalemia twice. When administered alone, neither drug significantly changed the normal serum potassium levels. Laboratory findings suggest an alteration of the internal balance of potassium as the main mechanism of this particular drug-induced hyperkalemia.
Insights
Combining indomethacin and Moduretic (amiloride HCl, hydrochlorothiazide) can cause severe hyperkalemia. This drug interaction, not seen with individual drugs, suggests a potassium imbalance mechanism.
Area of Science:
- Pharmacology
- Nephrology
- Internal Medicine
Background:
- Drug interactions can lead to unexpected adverse effects.
- Hyperkalemia is a serious condition requiring careful management.
Observation:
- A 78-year-old patient developed severe hyperkalemia twice.
- The hyperkalemia occurred only when indomethacin and Moduretic were administered simultaneously.
Findings:
- Neither indomethacin nor Moduretic caused significant potassium level changes when given alone.
- Laboratory data suggest altered internal potassium balance as the primary cause of this drug-induced hyperkalemia.
Implications:
- Clinicians should be aware of the potential for severe hyperkalemia when prescribing this drug combination.
- Further research into the specific mechanism of potassium imbalance is warranted.