Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery
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Otolaryngol Head Neck Surg · Oct 1989
Spinal fluid profile following surgery in the subarachnoid space.
Neurotologic and skull base procedures that include dissection within the subarachnoid space carry with them the potential for meningitis. Postoperative aseptic leptomeningitis occurs more frequently than purulent bacterial meningitis. ⋯ The definitive diagnosis is made with cerebral spinal fluid culture. Early differentiation between postoperative aseptic leptomeningitis and purulent bacterial meningitis on the basis of results of cerebral spinal fluid profile before cerebral spinal fluid culture would result in earlier appropriate therapy.
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Otolaryngol Head Neck Surg · Oct 1989
Comparative StudySurvival of the vestibular nerve after labyrinthectomy in the cat.
Temporal bone studies in cat, monkey, and man demonstrate that the cell bodies of the primary vestibular neurons located in Scarpa's ganglion persist after labyrinthectomy. However, it is not known whether the centrally directed axon process of deafferented vestibular neurons survive or degenerate after labyrinthectomy. If the central axon were to persist, then the primary vestibular neuron could influence vestibular compensation or produce symptoms of vestibular dysfunction. ⋯ This study provides anatomic evidence that primary vestibular neurons that survive labyrinthectomy may retain their central axon processes. The persistence of this neural pathway and data from behavioral studies in the cat suggest that vestibular neurons may affect vestibular compensation after labyrinthectomy. Deafferented vestibular neurons may play a role in human vestibular compensation and dysfunction.