1Hodgson PS,Liu SS.Acomparison of ropivaeaine with fentanyl to bupivaeaine with fentanyl for postoperative patient-con-trolld epidural analgesia[J].Anesth Analg,2001,92:1024.
2Jeon H R,Chae W S,Lee S J,et a1.A comparison of sufentanil and fentanyl for patintcontrolled epidural analgesia in arthroplasty[J].Korean J Anesthesiol,2011,60(1):41-46.
