Postoperative sodium retention is a physiologic response to decreased extracellular volume.
D005110:Extracellular Space / Q000378:metabolism*; D006801:Humans; D011184:Postoperative Period; D012964:Sodium / Q000378:metabolism*; D012965:Sodium Chloride / Q000008:administration & dosage
D012965:Sodium Chloride; D012964:Sodium