2Santos AC,DeArmas PI.Systemic toxicity of levobupivacaine,bupivacaine,and ropi-vacaine during continuous intravenous infu-sionto nonpregnant and pregnant ewes[].Anesthesiology.2001
3Chalkiadis GA,Eyres RL,Cranswick N,et al.Pharmacokinetics of levobupivacaine0.25%following caudal administration in children under2years of age[].British Journal of Anaesthesia.2004
4Chalkiadis GA,Anderson BJ,Tay M,et al.Pharmacokinetics of levobupivacaine af-ter caudal epidural administration in infants less than3months of age[].British Journal of Anaesthesia.2005
5Chalkiadis GA,Anderson BJ.Age and size are the major covariatesfor prediction of lev-obupivacaine clearance in children[].Paediatric Anaesthesia.2006
6Frawley GP,Downie S,Huang GH.Lev-obupivacaine caudal anesthesia in children:a randomized double-blind comparison with bupivacaine[].Paediatric Anaesthesia.2006
7Lerman J,Nolan J,Eyres R,et al.Effi-cacy,safety,and pharmacokinetics of lev-obupivacaine with and without fentanyl after continuous epidural infusion in children:a multicenter trial[].Anesthesiology.2003
8Kokki H,Ylonen P,Heikkinen M,et al.Levobupivacaine for Pediatric Spinal Anes-thesia[].Anesthesia and Analgesia.2004
9Frawley GP,Farrell T,Smith S.Lev-obupivacaine spinal anesthesia in neonates:a dose range finding study[].Paediatric Anaesthesia.2004
10Gunter JB,Gregg T,Varughese AM,et al.Levobupivacaine for ilioinguinal/iliohy-pogastric nerve block in children[].Anesthesia and Analgesia.1999
4Yildiz TS, Ozdarnar D, Bagus F, et al. Levobupivacaine-tramadol combination for caudal block in children:a randomized,double-blinded, prospective study[ J]. Paediatr Anaesth,2010,20(6) :524-529.
5Karanslan K, Gulcu N, Ozturk H, et al. Two different doses of caudal neostigmine co-administered with levobupivacaine produces analgesia in children[ J ]. Paediatr Anaesth ,2009,19 ( 5 ) :487-493.
6Disma N,Frawley G,Mameli L,et al. Effect of epidural clonidine on minimum local anesthetic concentration ( ED50 ) of levobupivacaine for caudal block in children[J]. Paediatr Anaesth,2011,21 (2) :128- 135.
7Locatelli BG, Frawley G, Spotfi A, et al. Analgesic effectiveness of caudal levobupivacaine and ketamine [ J ]. Br Anaesth, 2008, 100 (5) :701-706.
8Frawley G, Smith KR, Ingelmo P. Relative potencies of bupivacaine, levobupivacaine, and ropivacaine for neonatal spinal anaesthesia [ J ]. Br J Anaesth ,2009,103 (5) :731-738.
9Erol A,Tavlan A, Ttmcer S, et al. Caudal anesthesia for minor sub- umbilical pediatric surgery: a comparison of levobupivacaine alone and levobupivacaine plus sufentanil [ J ]. Clin Anesth, 2008,20 ( 6 ) : 442-446.
10Yao YS, Qian B, Chen BZ, et, al. The optimum concentration of levobupivacaine for intra-operative caudal analgesia in children un- dergoing inguinal hernia repair at equal volumes of injectate[ J]. An- aesthesia,2009 ,Jan;64 ( 1 ) :23-26.