title: Reduction of anxiety and postoperative analgesic requirements by audiovisual instruction.
mesh_terms: D000328:Adult; D000368:Aged; D000700:Analgesics / Q000008:administration & dosage*; D001007:Anxiety / Q000517:prevention & control* / Q000523:psychology; D001296:Audiovisual Aids / Q000706:statistics & numerical data*; D006801:Humans; D007430:Intraoperative Care; D008614:Meperidine / Q000008:administration & dosage; D008875:Middle Aged; D011300:Preoperative Care; D013514:Surgical Procedures, Operative / Q000523:psychology*
chemical_list: D000700:Analgesics; D008614:Meperidine