âTo the left of the pedestrian gate, which is wooden, is a mesh gate, and that had been cut,â testified Bloom.
Freebase (0.00 / 0 votes) Rate this definition: Intrathecal. Intrathecal is an adjective that refers to something introduced into or occurring in the space under the arachnoid membrane of the brain or spinal cord. For example, intrathecal immunoglobulin production means production of this substance in the spinal cord.
1 Only Omnipaque 240 and Omnipaque 300 are approved for intrathecal use. 2  It is very important that forms of Omnipaque not approved for intrathecal use, especially Omnipaque 350, are not used intrathecally. 3  Not adhering to this precaution may cause serious adverse reaction that may lead to injury or death.