title: Acid-aspiration prophylaxis by use of preoperative oral administration of cimetidine.
mesh_terms: D000284:Administration, Oral; D000293:Adolescent; D000328:Adult; D000769:Anesthesia, Inhalation / Q000009:adverse effects; D002927:Cimetidine / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D004305:Dose-Response Relationship, Drug; D004311:Double-Blind Method; D004341:Drug Evaluation; D005745:Gastric Acidity Determination; D005750:Gastric Juice / Q000187:drug effects*; D006146:Guanidines / Q000627:therapeutic use*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008875:Middle Aged; D010919:Placebos; D011015:Pneumonia, Aspiration / Q000517:prevention & control*; D011183:Postoperative Complications / Q000517:prevention & control*; D011229:Preanesthetic Medication; D011300:Preoperative Care / Q000379:methods*; D011897:Random Allocation; D014839:Vomiting / Q000517:prevention & control*
chemical_list: D006146:Guanidines; D010919:Placebos; D002927:Cimetidine