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Lumbar Punctures
Lumbar Punctures
A lumbar punctures is a procedure in which a needle is used to access the subarachnoid space. This may be used to collect cerebrospinal fluid (CSF) for diagnostic purposes, or therapeutic purposes in order to deliver drugs.

Post Dural Puncture Headache



    • Clinical Features

    • May occur hours or days after LP
    • Headache
    • Nausea / vomiting
    • Dizziness
    • Mechanism

    • Unknown, but thought to relate to reduced CSF pressure / compensatory venodilatation.
    • Prevention

    • Use an atraumatic needle rather than a cutting (bevelled) needle
    • Use the smallest bore needle possible
    • Reinsert the stylet prior to removing the needle
  • Several studies (Straus et al, Spriggs et al) suggest that bed rest post LP has no preventative effect on post-LP headache.
Last updated on January 1st, 2018