Cause Hyperkalemia | How Does Heparin

Aldosterone normally acts on the collecting duct of the kidney to increase sodium reabsorption and potassium secretion via epithelial sodium channels (ENaC) and Na⁺/K⁺-ATPase pumps . With less aldosterone, potassium secretion decreases, leading to potassium retention.

Heparin-induced hyperkalemia is not due to cell lysis or direct potassium release ; it’s a form of hyporeninemic hypoaldosteronism (though renin levels can be variable). how does heparin cause hyperkalemia

The Hidden Electrolyte Risk: How Heparin Can Cause Hyperkalemia Aldosterone normally acts on the collecting duct of

Heparin reduces both the number and affinity of angiotensin II receptors in the adrenal zona glomerulosa. Since angiotensin II is the primary stimulant for releasing aldosterone, its inability to bind properly results in a significant reduction in aldosterone output. The Hidden Electrolyte Risk: How Heparin Can Cause

Patients with chronic kidney disease (CKD) or reduced glomerular filtration rates (GFR).

Here’s the mechanism step-by-step: