Renal Failure
Lithium
Volume depletion
Rhabdo
IV Mg (goal in PET/eclampsia 5-7 mEq/L)
Massive PO intake (laxative abusers, accidental Epsom salts)
Magnesium enemas
Hypermagnesemia
Renal Failure
Hypomagnesemia
Lithium
Hyponatremia
Volume depletion
Hypophosphatemia
Rhabdo