Heparin sodium is mainly used for hemodialysis or hemofiltration to prevent blood clotting during extracorporeal circulation and to prevent thrombosis. The drug is mainly used for hemodialysis to prevent blood clotting and the treatment of deep vein thrombosis, unstable angina pectoris and the prevention of thrombosis related to surgery.

　　Needs to be individualized dosage, in terms of dosage of the drug in the application process may produce adverse reaction, can lead to bleeding, especially large dose application that may lead to subcutaneous hematoma, may also cause thrombocytopenia, skin necrosis, allergic reactions, rare is likely to trigger transaminase lifts.

　　The drug also has contraindications during use. Patients with acute gastroduodenal ulcer, cerebral hemorrhage, severe coagulation disease, and septic endocarditis are prohibited. Patients with thrombocytopenia who have positive in vitro platelet aggregation tests are not allowed to use para-heparin for central nervous system eye and ear injuries or for surgical use of para-heparin. In the treatment of acute pulmonary thrombosis, local anesthetics should be used with caution.