[Pre- and post-operative electrolyte metabolism in the aged].
D000368:Aged; D004231:Diuresis; D006801:Humans; D008875:Middle Aged; D011182:Postoperative Care; D011188:Potassium / Q000097:blood / Q000378:metabolism* / Q000652:urine; D011300:Preoperative Care; D012964:Sodium / Q000378:metabolism*; D013514:Surgical Procedures, Operative
D012964:Sodium; D011188:Potassium