title: Low dose heparin in elective abdominal surgery. Correlation between concentrations of heparin, antithrombin III and antiplasmin in patients with and without DVT.
mesh_terms: D000005:Abdomen / Q000601:surgery*; D000368:Aged; D000933:Antifibrinolytic Agents / Q000097:blood*; D000990:Antithrombin III / Q000032:analysis*; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D005260:Female; D006493:Heparin / Q000008:administration & dosage / Q000097:blood / Q000627:therapeutic use*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000517:prevention & control*; D013924:Thrombophlebitis / Q000517:prevention & control*
chemical_list: D000933:Antifibrinolytic Agents; D000990:Antithrombin III; D006493:Heparin