低分子肝素钠是一种新型的抗血栓剂，它由普通肝素分解强华而成，与肝素想比，具有生物利用度高，半衰起长，抗栓作用强，出血危险性小，不良反应少及无需试验检测。在临床上主要用于：治疗不稳定型心绞痛和非Q波心机梗塞；预防与手术有关的血栓形成。
Low molecular weight heparin sodium is a new antithrombotic agent. It is made of unfractionated heparin. Compared with heparin, it has high bioavailability, long half failure, strong antithrombotic effect, less bleeding risk, less adverse reactions and does not need to be tested. It is mainly used in the treatment of unstable angina pectoris and non-Q wave heart attack and the prevention of thrombus related to operation.
在使用低分子肝素钠时易引起疼痛，注射部位皮下血肿，硬结，腹壁血肿等！给患者和家属带来紧张，恐惧情绪，也可能影响药物的吸收，从来降低了治疗效果。而这些原因的发生与注射部位，注射过浅，注入药物过快，拔针方法，药液残留及按压时间及力度有关。
When using low molecular weight heparin sodium, it is easy to cause pain, subcutaneous hematoma, induration, abdominal wall hematoma, etc! It will bring tension and fear to patients and their families, and may also affect the absorption of drugs, which will never reduce the therapeutic effect. These reasons are related to the injection site, shallow injection, too fast injection of drugs, needle pulling method, drug residue, pressing time and strength.