title: Potassium. The intracellular cation.
abstract: Normally the concentration of potassium in the extracellular space is maintained within relatively narrow bounds; in disease, these boundaries may be exceeded. Hyperkalemia and sometimes hypokalemia must be considered medical emergencies, to be treated promptly, effectively, and appropriately.
mesh_terms: D001639:Bicarbonates / Q000627:therapeutic use; D002118:Calcium / Q000627:therapeutic use; D005110:Extracellular Space / Q000378:metabolism; D006801:Humans; D006947:Hyperkalemia / Q000188:drug therapy / Q000209:etiology; D007008:Hypokalemia / Q000188:drug therapy / Q000209:etiology; D007475:Ion Exchange Resins / Q000627:therapeutic use; D007668:Kidney / Q000378:metabolism; D010530:Peritoneal Dialysis; D011188:Potassium / Q000097:blood / Q000378:metabolism* / Q000627:therapeutic use; D006435:Renal Dialysis; D012964:Sodium / Q000627:therapeutic use
chemical_list: D001639:Bicarbonates; D007475:Ion Exchange Resins; D012964:Sodium; D011188:Potassium; D002118:Calcium