title: The "1+1" protocol: risks, benefits, and alternatives.
authors.forename: Alec B
authors.initials: AB
authors.lastname: O'Connor
mesh_terms: D001784:Blood Gas Analysis; D019091:Critical Pathways; D004334:Drug Administration Schedule; D004636:Emergency Service, Hospital; D006801:Humans; D004091:Hydromorphone / Q000008:administration & dosage* / Q000009:adverse effects; D007262:Infusions, Intravenous; D009294:Narcotics / Q000008:administration & dosage* / Q000009:adverse effects; D009732:Nursing Care; D010092:Oximetry; D010146:Pain / Q000188:drug therapy*
chemical_list: D009294:Narcotics; D004091:Hydromorphone