INS and Hyperkalemia: Halothane was discontinued, and malignant hyperthermia crisis treatment was initiated with dantrolene, cooling measures (intravenous iced solutions, bladder, and gastric lavage with iced solutions, cooling blanket, and placement of ice packs on the body surface), metabolic acidosis treatment (sodium bicarbonate), hyperkalemia management (calcium gluconate, glucose/insulin solution), procainamide, and dexamethasone.