How does acidosis affect potassium levels?

• A. Causes hypokalemia
• B. Leads to hyperkalemia
• C. No effect on potassium levels
• D. Increases only intracellular potassium

Answer: (B)

Acidosis leads to hyperkalemia primarily due to the shift of potassium ions from intracellular spaces to the extracellular fluid. In an acidic environment, hydrogen ions (H+) enter cells to mitigate the increased acidity, and to maintain electrochemical balance, potassium ions (K+) exit the cells. This exchange results in an increase of potassium levels in the blood, which can be dangerous and potentially lead to cardiac disturbances.

In normal physiological conditions, the body's regulatory mechanisms maintain potassium levels within a narrow range. However, during acidosis, these mechanisms become challenged, thereby increasing the risk of elevated potassium concentrations in the bloodstream. Understanding this relationship is crucial for recognizing and managing electrolyte imbalances in patients who may present with acidosis.