title: Pretreatment of high-risk patients requiring radiographic contrast media studies.
mesh_terms: D000707:Anaphylaxis / Q000209:etiology; D003287:Contrast Media / Q000009:adverse effects*; D004155:Diphenhydramine / Q000494:pharmacology; D006801:Humans; D011241:Prednisone / Q000494:pharmacology; D012306:Risk
chemical_list: D003287:Contrast Media; D004155:Diphenhydramine; D011241:Prednisone