Why does hypokalemia increase in a patient taking a loop diuretic targeting the ascending limb of the loop of Henle?

💡 Explanation

Loop diuretics inhibit the Na-K-2Cl symporter in the ascending limb, increasing distal tubule sodium delivery. Because of this increased sodium, the collecting duct increases potassium secretion to maintain electrical neutrality; therefore, hypokalemia develops rather than other mechanisms.

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