title: Preoperative sedation in cataract surgery: an evaluation of two regimens.
mesh_terms: D000772:Anesthesia, Local; D002387:Cataract Extraction; D003975:Diazepam / Q000008:administration & dosage*; D004359:Drug Therapy, Combination; D005069:Evaluation Studies as Topic; D006801:Humans; D008012:Lidocaine; D008614:Meperidine / Q000008:administration & dosage*; D010424:Pentobarbital / Q000008:administration & dosage*; D011229:Preanesthetic Medication; D011398:Promethazine / Q000008:administration & dosage*; D012119:Respiration / Q000187:drug effects; D014851:Wakefulness / Q000187:drug effects
chemical_list: D008012:Lidocaine; D008614:Meperidine; D011398:Promethazine; D010424:Pentobarbital; D003975:Diazepam