title: [The manipulation and effects of continuous femoral nerve block after performing a combined spinal and epidural anesthesia].
abstract: OBJECTIVE
  To evaluate the manipulation and effects of continuous femoral nerve block after performing a combined spinal and epidural anesthesia.
  
  
  METHODS
  60 patients, ASAI-II, scheduled for elective total knee arthroplasty were randomized to PRE group or POST group (n = 30 for the each). CFNB was implemented before CSEA in PRE group, while CFNB was completed after the anesthesia in POST group. After the surgery, 1% lidocaine 10 ml was injected in through the catheter as the priming dose following a continuous rate of 5 ml/h of 0.2% ropivacaine. The performance time of CFNB, VAS scores, patient satisfaction and adverse effects were recorded.
  
  
  RESULTS
  The performance time of CFNB in POST group was significantly lower than it in PRE group ((10.5 +/- 2.5) min vs (13.4 +/- 3.0) min) (P < 0.05). The patient satisfaction was much higher (P < 0.05), while the VAS scores was significantly lower in POST group (0.8 +/- 0.2) than those in PRE group (3.4 +/- 0.5) (P < 0.05) during the performance of CFNB. There were no significant differences in VAS scores at postoperative 6, 12, 24, 36 and 48 h, total patient satisfaction and adverse effects.
  
  
  CONCLUSIONS
  The effects of CFNB after CSEA were definitely fine with higher patient satisfaction during the manipulation. It was a better choice of performing CFNB after CSEA.
authors.affiliation: Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China.
authors.forename: Mao
authors.initials: M
authors.lastname: Xu
authors.forename: Jun
authors.initials: J
authors.lastname: Wang
authors.forename: Li-ping
authors.initials: LP
authors.lastname: Zhang
authors.forename: Min
authors.initials: M
authors.lastname: Li
authors.forename: Xiang-yang
authors.initials: XY
authors.lastname: Guo
mesh_terms: D000368:Aged; D000767:Anesthesia, Epidural; D000775:Anesthesia, Spinal; D019645:Arthroplasty, Replacement, Knee; D005260:Female; D005269:Femur / Q000294:innervation; D006801:Humans; D008297:Male; D008875:Middle Aged; D009407:Nerve Block / Q000379:methods*; D010147:Pain Measurement; D017060:Patient Satisfaction