Effect of HSYA on LVIDs and LVEF in coronary heart disease model. The effect of HSYA on (A) LVIDs and (B) LVEF in a coronary heart disease model. **P<0.01 vs. sham; ##P<0.01 vs. model. HSYA, hydroxy safflower yellow A; LVEF, left ventricular ejection fraction; LVID, left ventricular systolic internal diameter; sham, sham group; model, coronary heart disease model group; HSYA-L, low dose HSYA group; HSYA-H, high dose HSYA group.