Which electrolyte is MOST important in the treatment of digoxin toxicity?

Digoxin competes with potassium for the same binding site on the Nau207a/Ku207a-ATPase pump. Hypokalemia increases digoxin's binding and toxicity. Correcting potassium levels is the most critical electrolyte intervention in digoxin toxicity. Digoxin-specific antibody fragments (Digibind) are used in severe cases.