Low molecular weight heparin sodium, or low molecular weight heparin sodium injection, is usually injected around the umbilicus. For low molecular weight heparin sodium, or the excipients contained in the people who are allergic, as well as patients suffering from acute bacterial endocarditis, thrombocytopenia, accidental cerebrovascular bleeding should be prohibited. The specific injection site of the drug and precautions are as follows:

　　The injection site of low molecular weight heparin sodium is usually injected alternately at 4-10cm around the umbilical cord, and the injection spacing is more than 2cm. Care should be taken to avoid repeated injections at the same injection site and avoid the umbilicus.

　　Notes on low molecular weight heparin sodium:

　　1. Strict monitoring: Regardless of the purpose and dose of low-molecule-weight heparin sodium injection, platelet count is recommended before the use of this drug, and platelet count detection is routinely performed during the treatment. If the platelet count is significantly decreased, that is, below 30% to 50% of the original value, medication should be discontinued;

　　2. Careful use: Low molecular weight heparin sodium injection should be carefully used for patients with liver and kidney insufficiency, a history of digestive tract ulcer, or a history of organ injury with bleeding tendency, hemorrhagic stroke, a history of uncontrolled severe arterial hypertension, and diabetic retinopathy. In addition, for the recent need to undergo nerve or eye surgery, as well as the need for subarachnoid anesthesia, epidural anesthesia of the population, also need to use caution;

　　3. Other precautions: Intramuscular injection of low molecular weight heparin sodium injection should be prohibited to avoid local edema. Because the molecular weight and dosage form produced by different manufacturers are different, they can not be used instead of each other. Usually, the drug should be placed away from children. If petechiae, petechiae, mild edema, necrosis or rash occur at the injection site, the doctor should be informed immediately, and the drug should not be stopped without authorization.