Conclusion Xinan Granule could possibly produce MDA by suppression of the cardiac muscle ischemia, and then enhance the activity of SOD in cardiac muscles to realize the anti-arrythmia function.

• 结论心安颗粒可能是通过抑制由心肌缺血再灌注损伤引起的MDA生成，提高心肌组织SOD的活力实现抗心律失常作用。