title: Premedication abolishes the increase in plasma beta-endorphin observed in the immediate preoperative period.
mesh_terms: D000324:Adrenocorticotropic Hormone / Q000097:blood; D003975:Diazepam / Q000627:therapeutic use; D004155:Diphenhydramine / Q000627:therapeutic use; D004723:Endorphins / Q000097:blood*; D006801:Humans; D008614:Meperidine / Q000627:therapeutic use; D011229:Preanesthetic Medication; D011300:Preoperative Care; D013315:Stress, Psychological / Q000097:blood*; D013514:Surgical Procedures, Operative; D001615:beta-Endorphin
chemical_list: D004723:Endorphins; D001615:beta-Endorphin; D004155:Diphenhydramine; D000324:Adrenocorticotropic Hormone; D008614:Meperidine; D003975:Diazepam