Postural hypotension: body fluid compartments and electrolytes.
D000368:Aged; D001826:Body Fluids / Q000032:analysis*; D001834:Body Water; D001835:Body Weight; D005110:Extracellular Space; D005260:Female; D006801:Humans; D007024:Hypotension, Orthostatic / Q000097:blood* / Q000188:drug therapy / Q000209:etiology; D008297:Male; D011188:Potassium / Q000097:blood* / Q000627:therapeutic use; D012964:Sodium / Q000097:blood*
D012964:Sodium; D011188:Potassium