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Related to subarachnoid space: Subarachnoid hemorrhage
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A consequence is thecal compression, displacing the cerebrospinal fluid within the subarachnoid space and causing either a decrease in the requirement for the intrathecal drug (42) or an increase in its intrathecal spread (31).
Prolonged hypoxia affects morphological structures of the cerebral tissue, presenting as cerebral cortex atrophy with extension of subarachnoid space and lateral ventricles; changes in density of white and gray substances being registered.
Crucially however, both anaesthetic and medical lumbar punctures involve accessing the subarachnoid space with medical equipment and so the risk is present.
Spinal anaesthesia can be defined as the loss of sensation produced by the injection of anaesthetic directly into the subarachnoid space (Phillips 2007).
Cushing also attempted to divert CSF from the spinal subarachnoid space to the peritoneal cavity or retroperitoneum with silver cannulae passed through apertures in the L-4 vertebral body (8,10).
1994) reported a pulmonary subcutaneous choristoma arising between the occipital protuberance and the spinous process of the second cervical vertebra, but the lesion did not communicate with the subarachnoid space.
The route of spread appears to be by direct extension into the optic nerve from the retina and into the meningeal spaces, or along the central retinal vessels to the subarachnoid space.
This infection focus can rupture into the subarachnoid space, causing tuberculous meningitis and parenchymal tuberculomas.
In addition to the integumentary lesions and poor body condition, an expanded subarachnoid space filled with CSF of normal consistency was found.
The specific behavior of (3z transferrin is used for the detection of CSF leakage from the subarachnoid space into the nasal or aural cavity (4,5).