title: Systemic heparin in major vascular operations.
mesh_terms: D001771:Blood Banks; D001804:Blood Transfusion, Autologous; D006493:Heparin / Q000627:therapeutic use*; D006801:Humans; D013924:Thrombophlebitis / Q000209:etiology / Q000517:prevention & control; D013927:Thrombosis / Q000517:prevention & control; D014656:Vascular Surgical Procedures / Q000009:adverse effects
chemical_list: D006493:Heparin