OR observations: key to postop pain.
D006801:Humans; D009871:Operating Room Nursing; D010146:Pain / Q000175:diagnosis* / Q000503:physiopathology; D010149:Postoperative Pain / Q000175:diagnosis / Q000517:prevention & control; D011182:Postoperative Care; D011300:Preoperative Care; D013514:Surgical Procedures, Operative