title: H2 receptor antagonists and anaesthesia.
mesh_terms: D006635:Histamine H2 Antagonists / Q000009:adverse effects / Q000627:therapeutic use*; D006801:Humans; D011015:Pneumonia, Aspiration / Q000517:prevention & control; D011229:Preanesthetic Medication
chemical_list: D006635:Histamine H2 Antagonists