1[1]Biboulet P,Capdevila X,Aubas P,et al.Causes and prediction of maldistribu tion during continuous spinal anesthesia with isobaric or hyperbaric bupivacaine .Anesthesiology,1998,88:1487.
2[2]Myers MR.A numerical investigatio n into factors affecting anesthetic dist ribution during spinal anesthesia.J Biomech,1996,29:139.
3[3]Gerancher JC,Carpenter RL.The peri pheral nerve stimulator:a monitor during continuous spinal anesthesia.Case repor t.Reg Anesth,1996,21:480.
4[4]Muralidhar V,Kaul HL,Mallick P.Over-the-needle versus microcatheter-thr ough-needle technique for continuous spi nal anesthesia:a preliminary study.Reg Anesth Pain Med,1999,24:417.
5[5]De Andres J,Valia JC,Olivares A,e t al.Continuous spinal anesthesia:a comparati ve study of standard microcatheter and S pinocath.Reg Anesth Pain Med,1999,24:110 .
6[6]Standl T,Beck H.Technical problem s with 32-gauge microcatheters in contin uous spinal anaesthesia.Acta Anaesthesio l Scand,1993,37:811.
7[7]Dohler S, Klippel A, Richter S. Continuous spinal anesthesia in very eld erly patients with high anesthesia risk in traumatologic-orthopedic and general surgery interventions.Anaesthesiol Reanim,1999,24:157.
8[8]Honig O,Winter H,Baum KR,et al.Cesarean section with continuous spinal anesthesia in a cardiopulmonary high-ris k patient.Anaesthesist,1998,47:685.
9[9]Sutter PA,Gamulin Z,Forster A.Comparison of continuous spinal and cont inuous epidural anaesthesia for lower li mb surgery in elderly patients. A retros pective study.Anesthsia,1989,44:47.
10[10]Van Gessel E,Forster A,Gamulin Z.A prospective study of the feasibility o f continuous spinal anesthesia in a univ ersity hospital.Anesth Analg,1995,80:880.
9Trautman WJ, Liu SS, Kopacz DJ. Comparison of lidocaine and saline for epidural top-up during combined spinal-epidural anesthesia in volunteers. Anesth Analg, 1997,184 : 574-577.
10Lew E, Yeo SW, Thomas E. Combined spinal-epidural anesthesia using epidural volume extension leads to faster motor recovery after elective cesarean delivery: a prospective, randomized, double-blind study. Anesth Analg, 2004, 98: 810- 814.