Why hyperkalemia in acidosis patients?

Hyperkalemia in patients with acidosis occurs primarily due to the exchange of hydrogen ions (H⁺) and potassium ions (K⁺) across cell membranes. In acidosis, increased H⁺ concentration in the extracellular fluid leads to H⁺ entering cells in exchange for K⁺, resulting in elevated serum potassium levels. Additionally, acidosis can impair renal function, reducing potassium excretion. This combination of cellular ion exchange and renal impairment contributes to the development of hyperkalemia in acidosis.