title: Ultrasound-guided technology versus neurostimulation for sciatic nerver block: a meta-analysis.
abstract: BACKGROUND
  Sciatic nerve block is widely used for anesthesia and analgesia in lower limb surgery, traditional method used for sciatic nerve block is nerve stimulation guidance. Whether the use of ultrasound-guided technology can increases the success rate of sciatic nerve block and provide other benefits are not defined. This meta-analysis was aimed to clarify this issue.
  
  
  METHODS
  We searched Pubmed, the Cochrane library and Google Scholar. A total of 10 RCTs met our inclusion criteria. The patients included underwent ultrasound-guided or nerve stimulation guidance for sciatic nerve block. We compared the success rate, vascular puncture, the time of procedure and Success rate of catheter placement.
  
  
  RESULTS
  Ultrasound-guided technology, compared with nerve stimulation for sciatic nerve block, provided higher success rate. [RR = 1.22 95% CI: 1.04-1.42, P = 0.01], Ultrasound guidance also reduce the risk of vascular puncture. [RR = 0.13 95% CI: 0.02-0.97, P = 0.05]. However, the success rate of catheter placement [RR = 1.1095% CI: 0.93-1.29, P = 0.27] and the time of performing sciatica never block [RR = -0.17 95% CI: -1.61-1.27, P = 0.82] did not differ significantly.
  
  
  CONCLUSIONS
  Compared to traditional nerve stimulation guidance, ultrasound guidance for sciatic nerve may improve the success rate of block and reduce the risk of vascular puncture.
authors.affiliation: Department of Anesthesiology, Shanghai East Hospital, Tongji University School of Medicine Shanghai, China ; Department of Anesthesiology, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine Shanghai, China.
authors.forename: Xiuhong
authors.initials: X
authors.lastname: Cao
authors.affiliation: Department of Anesthesiology, Shanghai East Hospital, Tongji University School of Medicine Shanghai, China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Zhao
authors.affiliation: Department of Anesthesiology, Shanghai East Hospital, Tongji University School of Medicine Shanghai, China.
authors.forename: Jin
authors.initials: J
authors.lastname: Xu
authors.affiliation: Department of Anesthesiology, Shanghai East Hospital, Tongji University School of Medicine Shanghai, China.
authors.forename: Zhengmei
authors.initials: Z
authors.lastname: Liu
authors.affiliation: Department of Anesthesiology, Shanghai East Hospital, Tongji University School of Medicine Shanghai, China.
authors.forename: Quan
authors.initials: Q
authors.lastname: Li
keywords: Sciatic never block; meta-analysis; ultrasound-guided technology