Objective To compare the effect and safety between low molecular weight heparin (LMWH) and unfractionated heparin (UFH) in the treatment of unstable angina (UA).

• 目的比较低分子肝素(LMWH)与普通肝素(UFH)治疗不稳定型心绞痛(UA)的有效性及安全性。