[Surgery and case of poor-risk patients].
D000368:Aged; D000758:Anesthesia; D006801:Humans; D008297:Male; D008875:Middle Aged; D010808:Physical Examination; D011182:Postoperative Care; D011183:Postoperative Complications / Q000517:prevention & control; D011300:Preoperative Care; D013514:Surgical Procedures, Operative