The release of cardiac enzymes was more in patients with CCT longer than 45 minutes,and the recovery took a longer time,too,compared with the patients with CCT shorter than 45 minutes.

• 术后心肌酶的释放与心肌缺血时间存在着正相关关系，阻断时间超过45分钟组的心肌酶释放明显高于阻断时间少于45分钟组者，且前者心肌酶的恢复也较慢。