title: Failure of low-dose heparin to prevent deep-vein thrombosis after hip-replacement arthroplasty.
mesh_terms: D000368:Aged; D001178:Arthroplasty / Q000009:adverse effects*; D001835:Body Weight; D002118:Calcium / Q000008:administration & dosage / Q000627:therapeutic use; D002986:Clinical Trials as Topic; D005260:Female; D005268:Femoral Vein; D005340:Fibrinogen; D006454:Hemoglobins / Q000032:analysis; D006470:Hemorrhage / Q000453:epidemiology / Q000209:etiology; D006493:Heparin / Q000008:administration & dosage* / Q000627:therapeutic use; D006615:Hip / Q000601:surgery*; D006801:Humans; D007279:Injections, Subcutaneous; D007457:Iodine Radioisotopes; D007595:Joint Prosthesis; D008297:Male; D008875:Middle Aged; D011182:Postoperative Care; D011183:Postoperative Complications / Q000517:prevention & control*; D011300:Preoperative Care; D011446:Prospective Studies; D011877:Radionuclide Imaging; D013924:Thrombophlebitis / Q000175:diagnosis / Q000453:epidemiology / Q000209:etiology / Q000517:prevention & control*; D013997:Time Factors; D014463:Ultrasonography
chemical_list: D006454:Hemoglobins; D007457:Iodine Radioisotopes; D005340:Fibrinogen; D006493:Heparin; D002118:Calcium