Ventricular arrhythmias: 0.3 mEq/kg IV over 5 min then CRI 1 mEq/kg/day
Dilute to at least 20%
Rationale: cofactor for ATPase (Na/K and Ca); regulates iCa; Mg may act as Ca channel blocker; prevents K+ leaking from cell; may prevent intracellular Ca overload after ischemia
Hypomagnesemia: 1 mEq/kg/day
Consider if persistent hypokalemia
Nebulization:
18g Epsom salt + 250 mL sterile water
bronchodilation, decrease bronchospasm, anti-inflammatory