<prompt> Digoxin toxicity is aggravated by?HypokalemiaHyperkalemiaHypercalcemiaHypocalcemia  <response>: Digoxin toxicity causes hyperkalemia, or high potassium. The sodiumpotassium ATPase pump normally causes sodium to leave cells and potassium to enter cells. Blocking this mechanism results in higher serum potassium levels REF.Essentials of medical pharmacology K D TRIPATHI 8th Edition 