TY  - CHAP
M1  - Book, Section
TI  - Chapter 46. Ultrasound of the Lumbar Paravertebral Space and Considerations for Lumbar Plexus Block
A1  - Karmakar, Manoj
A1  - Vandepitte, Catherine
A2  - Hadzic, Admir
PY  - 2012
T2  - Hadzic's Peripheral Nerve Blocks and Anatomy for Ultrasound-Guided Regional Anesthesia, 2e
AB  - Lumbar  plexus  block  (LPB)  traditionally  is  performed  using  surface  anatomic  landmarks  to  identify  the  site  for  needle  insertion  and  eliciting  quadriceps  muscle  contraction  in  response  to  nerve  electro-localization,  as  described  in  the  nerve  stimulator–guided  chapter.  The  main  challenges  in  accomplishing  LPB  relate  to  the  depth  at  which  the  lumbar  plexus  is  located  and  the  size  of  the  plexus,  which  requires  a  large  volume  of  local  anesthetic  for  success.  Due  to  the  deep  anatomic  location  of  the  lumbar  plexus,  small  errors  in  landmark  estimation  or  angle  miscalculations  during  needle  advancement  can  result  in  needle  placement  away  from  the  plexus  or  at  unwanted  locations.  Therefore,  monitoring  of  the  needle  path  and  final  needle  tip  placement  should  increase  the  precision  of  the  needle  placement  and  the  delivery  of  the  local  anesthetic.  Although  computed  tomography  and  fluoroscopy  can  be  used  to  increase  the  precision  during  LPB,  these  technologies  are  impractical  in  the  busy  operating  room  environment,  costly,  and  associated  with  radiation  exposure.  It  is  only  logical,  then,  that  ultrasound-guided  LPB  is  of  interest  because  of  the  ever-increasing  availability  of  portable  machines  and  the  improvement  in  the  quality  of  the  images  obtained.1,2  
SN  - 
PB  - The McGraw-Hill Companies
CY  - New York, NY
Y2  - 2024/04/24
UR  - accessanesthesiology.mhmedical.com/content.aspx?aid=55905181
ER  -