Administration of heparin.
D001780:Blood Coagulation Tests; D006493:Heparin / Q000008:administration & dosage*; D006801:Humans; D007279:Injections, Subcutaneous; D011183:Postoperative Complications / Q000517:prevention & control; D011655:Pulmonary Embolism / Q000517:prevention & control*
D006493:Heparin