title: Transient electrocardiographic changes in anaphylaxis.
mesh_terms: D000707:Anaphylaxis / Q000503:physiopathology*; D003951:Diagnostic Errors; D004342:Drug Hypersensitivity / Q000503:physiopathology; D004562:Electrocardiography; D006321:Heart / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010400:Penicillin G / Q000276:immunology; D013610:Tachycardia / Q000503:physiopathology
chemical_list: D010400:Penicillin G