8Akcaboy Z N,Akcaboy E Y,Mutlu N M,et al.Spinal anesthesia with low-dose bupivacaine-fentanyl combination:a good alternative for day case transurethral resection of prostrate surgery in geriatric patients[J].Rev Bras Anestesiol,2012,62(6):753.
9Karaman S,Gvnvse I,Uyar M,et al.The effects of morphine and fentanyl alone or in combination added to intrathecal bupivacaine in spinal anesthesia forcesarean[J].Agri,2011,23(2):57.
4Rawal N.The combined spinal-epidural technique.Best Practice & Research Clinical Anaesthesiology,2003,17(3):347-364.
5Morrison JH,Hof PR.Lifo and death of neurons in the asing brain.Science,1997,278(5337):412-419.
6George MJ.The site of action of epidurally administered opioids and its relevance to postoperative pain management.Anaesthesia,2006,61(7):659-664.
7Ginosar Y,Columb MO,Cohen SE,et al.The site of action of epidural fontanyl infusions in the presence of local anesthetics:a minimum local analgesic concentration infusion study in nulliparous labor.Anesth Analg,2003,97(5):1439-1445.
8Choi DH,Ahn HJ,Kim MH.Bupivacaine-sparing effect of fontanyl in spinal anesthesia for cesarean delivery.Reg Anesth Pain Med,2000,25(3):240-245.
9Choi DH,Ahn HJ,Kim JA.Combined low-dose spinal-epidural anesthesia versus single-shot spinal anesthesia for elective cesarean delivery.Int J Obstet Anesth,2007,16(1):90-91.
10Nelson KE,Houle TT.Eisenach JC.Blood pressure,but not cerebrospinal fluid fontanyl concentration,predicts duration of labor analgesia from spinal fentanyi.Anesthesiology,2010,112(1):174-180.
