This site is intended for healthcare professionals

Go to /sign-in page

You can view 5 more pages before signing in

Procedure

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

  • put gloves on
  • put a drape on top of the patient
  • clean the area e.g. with betadine
  • anaesthetise the skin and subcutaneous tissues with 1% lignocaine at the chosen site
  • place the spinal needle in the interspace with the bevel uppermost and advance it towards the umbilicus keeping it parallel to the ground
  • when advancing the needle consider:
    • when there is an increase in resistance as you go into the tough ligamentum flavum and a marked reduction of resistance when the needle passes through. When through the ligamentum flavum, the dura is very close (1-2mm away) and the needle should be slowly advanced and the stylet withdrawn after each step
    • when the dura is reached there should be a free flow of cerebrospinal fluid (CSF)
  • measure the opening pressure with a manometer - if greater than 40 cm of water, remove needle immediately to avoid brain stem herniation. Normal pressure is 6-20 cm of water

Create an account to add page annotations

Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed when you visit this page

The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

Connect

Copyright 2024 Oxbridge Solutions Limited, a subsidiary of OmniaMed Communications Limited. All rights reserved. Any distribution or duplication of the information contained herein is strictly prohibited. Oxbridge Solutions receives funding from advertising but maintains editorial independence.