Samples of the right atrial were obtained before and after cardiopulmonary bypass (CPB) and the myocyte apotosis were examed via TUNEL reagents boxes and scanning electron microscopy.

• 分别于心肺转流术(CPB)前，停机时留取右心房肌标本，采用原位细胞凋亡检测试剂盒，扫描电镜检测心肌细胞的细胞凋亡情况。