Heparin - Cause Hyperkalemia

Heparin-induced hyperkalemia usually develops after initiation of therapy, though it can occur as early as 48 hours in susceptible individuals. The rise in serum potassium is generally modest (0.5–1.5 mEq/L above baseline), but increases of >6.0 mEq/L have been reported. Many patients remain asymptomatic, with hyperkalemia detected only on routine laboratory monitoring. When symptoms occur, they are nonspecific and include fatigue, palpitations, nausea, and muscle weakness. Electrocardiographic changes (peaked T waves, widened QRS, bradycardia, and eventually ventricular fibrillation or asystole) may appear at potassium levels above 6.5 mEq/L.

Heparin-Induced Hyperkalemia: Mechanisms, Risk Factors, and Clinical Implications heparin cause hyperkalemia

Heparin-induced hyperkalemia is reversible upon drug discontinuation. Aldosterone production typically recovers within days to weeks after stopping heparin. However, unrecognized severe hyperkalemia can lead to cardiac arrest and death. Therefore, awareness and monitoring are critical, particularly in hospitalized patients receiving therapeutic-dose heparin. When symptoms occur, they are nonspecific and include