Cause Hyperkalemia: How Does Heparin

Heparin (and its low-molecular-weight derivatives) interferes with the zona glomerulosa of the adrenal cortex. It reduces both the number and affinity of angiotensin II receptors on these cells and inhibits enzymes in the aldosterone synthesis pathway (especially early steps like cholesterol side-chain cleavage).

Simply stopping the heparin usually resolves the hyperkalemia within 1–3 days.

Aldosterone suppression can be observed as early as four days after beginning therapy. Risk Factors for Heparin-Induced Hyperkalemia how does heparin cause hyperkalemia

While many people can compensate for the drop in aldosterone, the effect is more pronounced in individuals with pre-existing risk factors.

Patients with chronic kidney disease (CKD) or reduced glomerular filtration rates (GFR). Aldosterone suppression can be observed as early as

The defining feature of heparin-induced hyperkalemia is a , resulting from the direct pharmacological suppression of steroidogenesis in the adrenal cortex.

Heparin impairs the production of , a hormone produced by the adrenal cortex (specifically the zona glomerulosa ). Aldosterone is essential for regulating sodium and potassium levels. When its production is blocked, the body loses its primary mechanism for excreting potassium, leading to hyperkalemia. The defining feature of heparin-induced hyperkalemia is a

Long-term or heavy heparin use can actually lead to the physical atrophy of the zona glomerulosa.