Which electrolyte deficiency can impair potassium correction?

Magnesium deficiency is known to significantly impair potassium correction due to its essential role in maintaining potassium balance within the body. Magnesium facilitates the proper function of the sodium-potassium ATPase pump, which is crucial for cellular potassium uptake. When magnesium levels are low, this pump does not work effectively, leading to a resistance to potassium repletion. Moreover, low magnesium levels can cause increased renal excretion of potassium, further complicating the correction of hypokalemia.

Thus, addressing magnesium deficiency is vital before or alongside potassium supplementation to ensure effective management of low potassium levels. Failure to correct magnesium levels can result in persistent hypokalemia despite potassium therapy, demonstrating the interdependence of these electrolytes in clinical practice.