title: Prevention of venous thrombosis with small, subcutaneous doses of heparin.
abstract: The effect of low-dose heparin prophylaxis on venous thrombosis and bleeding after major elective surgery was studied in a prospective controlled study of 820 patients. The total incidence of venous thrombosis detected with leg-scanning using fibrinogen labeled with radioactive iodine (125I) was reduced from 16.0% in the control group to 4.2% in treated patients. More important, the incidence of popliteal or femoral vein thrombosis was reduced from 2.9% to 1.0%. Prophylaxis resulted in a slight increase in bleeding-minor wound hematoma, mean volume of blood transfused, and a post-operative hematocrit fall in treated patients. However, increased bleeding was clinically minor, and prophylaxis was well tolerated.
mesh_terms: D005340:Fibrinogen; D006470:Hemorrhage / Q000139:chemically induced; D006493:Heparin / Q000008:administration & dosage* / Q000009:adverse effects / Q000627:therapeutic use; D006801:Humans; D007279:Injections, Subcutaneous; D007457:Iodine Radioisotopes; D007866:Leg / Q000098:blood supply; D011183:Postoperative Complications / Q000517:prevention & control; D011446:Prospective Studies; D013514:Surgical Procedures, Operative; D013924:Thrombophlebitis / Q000517:prevention & control*
chemical_list: D007457:Iodine Radioisotopes; D005340:Fibrinogen; D006493:Heparin