Objective To compare the usage effect of Patient Control Injection Ache (PCIA) and Patient Control Extradural Ache (PCEA) in open-chest operation patients.

• 摘要目的比较经静脉注射病人自控镇痛(PCIA)和经硬膜外病人自控镇痛(PCEA)在开胸手术患者的应用效果。