Beta agonists increase intracellular uptake of potassium. Alpha agonists increase potassium release from the liver. Beta blockers decrease cellular uptake and therefore increase serum potassium. Inadequate intake Magnesium depletion. Mg is extracellular.
Homeostasis is primarily renal, although control mechanisms are uncertain.
Continue infusion for 3-7 days. Mag-Ox 400 q day or BID Diarrhea is limiting side effect. Stobo JD, Hellman DB, et al. The Principles and Practice of Medicine , 23rd edition. Chapters 5.2, 5.3.