Objective To explore the effects and dose-effect relationship of various doses of simvastatin including 5mg,10mg,20mg/day to vascular endothelial function in patients with coronary heart disease(CHD).

• 目的探讨不同剂量(5mg,10mg,20mg)的辛伐他汀对冠心病患者血管内皮功能的作用及其量效关系。