Figure 3.

Cardiac function. The EF and FS were detected by echocardiography at 4 weeks after the coronary artery occlusion surgery. The EF and FS were significantly decreased in all groups compared with the control group. Compared with the model group, the EF in the metoprolol group and WXKL group was significantly increased, while only the FS in the WXKL group was significantly increased. Values are expressed as mean ± SD (n = 7). **P < 0.01, versus control. ^Δ P < 0.05, ^ΔΔ P < 0.01, versus the model.