title: Levarterenol for gastrointestinal and intraoperative bleeding.
mesh_terms: D000328:Adult; D000368:Aged; D006471:Gastrointestinal Hemorrhage / Q000188:drug therapy*; D006470:Hemorrhage / Q000188:drug therapy* / Q000209:etiology; D006801:Humans; D008875:Middle Aged; D009638:Norepinephrine / Q000627:therapeutic use*; D011446:Prospective Studies; D013514:Surgical Procedures, Operative / Q000009:adverse effects
chemical_list: D009638:Norepinephrine