目的研究两种复合全麻下，非心肺转流冠脉搭桥(OPCAB)围术期辅助性T淋巴细胞的免疫应激反应。
Objective to investigate the immune stress response of helper t lymphocyte (th) to the off pump coronary artery bypass (OPCAB) under two general anesthesia methods.
结论术前访视可稳定患者手术日晨间情绪，降低应激反应和紧张心理，帮助患者平安地渡过手术期。
Conclusion Visiting patients before operation can stabilize patient's emotion and reduce their stress reaction and anxiety so as to help them get through the operative period more smoothly.
结论：心理干预能减轻椎管内麻醉患者围手术期的应激反应，促进患者术后恢复。
Conclusion the psychological intervention is conducive to alleviate the reaction of the patients with anesthesia in vertebral canal during the period of operation and facilitate their recovery.
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