title: Assessment of effect of various modes of premedication on acid aspiration risk factors in outpatient surgery.
mesh_terms: D000284:Administration, Oral; D000328:Adult; D000556:Ambulatory Surgical Procedures; D002986:Clinical Trials as Topic; D003975:Diazepam / Q000008:administration & dosage; D005260:Female; D005744:Gastric Acid; D005745:Gastric Acidity Determination; D006801:Humans; D006919:Hydroxyzine / Q000008:administration & dosage; D007273:Injections, Intramuscular; D007275:Injections, Intravenous; D008297:Male; D008614:Meperidine / Q000008:administration & dosage; D011015:Pneumonia, Aspiration / Q000209:etiology*; D011229:Preanesthetic Medication; D011346:Prochlorperazine / Q000008:administration & dosage; D011897:Random Allocation; D012306:Risk
chemical_list: D006919:Hydroxyzine; D008614:Meperidine; D003975:Diazepam; D011346:Prochlorperazine