Anesthesia Management of Endovascular Repair of Aortic Aneurysm
نویسندگان
چکیده
Anatomy Surrounding the spinal cord in the bony vertebral column are three membranes. From the immediate overlay of the cord to the periphery, there are the pia mater, the arachnoid mater, and the dura mater [11]. Between the pia and the arachnoid is the space of interest in spinal anesthesia, the subarachnoid space. In this space are the cerebrospinal fluid (CSF), spinal nerves, a trabecular network between the two membranes, blood vessels that supply the spinal cord, and the lateral extensions of the pia mater, the dentate ligaments. The spinal cord normally terminates above the first lumbar intervertebral space as the conus medullaris. However, normal variability amongst patients, or abnormal conditions such as a tethered cord, may mean that the spinal cord terminates unusually caudad.
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