In cases where non-targeted or interlaminar blood-patches are unsuccessful, or where a ventral defect is demonstrated, then a transforaminal approach can be used typically with CT guidance 20. Interlaminar access to the spinal epidural space can be done under fluoroscopy or CT, and is essentially identical to one described in the article on lumbar interlaminar epidural injection. antecubital) is performed, the cannula connected to an extension tube (kept sterile) and flushed. CannulationĪt the beginning of the procedure, sterile venous cannulation (e.g. preprocedural imaging has demonstrated the site of CSF leak - see craniospinal hypotension) or non-targeted 2. allergy to any of the planned medicationsĮpidural blood patches can be targeted (i.e.craniospinal hypotension including post-lumbar puncture headache.
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