Auditory Brain Stem Evoked Potentials
Mostrando 13-20 de 20 artigos, teses e dissertações.
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13. Brain stem auditory evoked potentials in patients with multiple system atrophy with progressive autonomic failure (Shy-Drager syndrome).
Brain stem potentials from three groups of patients, namely those with pure progressive autonomic failure, Parkinson's disease and multisystem atrophy with progressive autonomic failure (Shy-Drager syndrome) were compared with each other and a group of normal subjects. In virtually all the patients with multisystem atrophy with progressive autonomic failure
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14. Electrophysiological studies in cerebrotendinous xanthomatosis.
Seven patients with cerebrotendinous xanthomatosis (CTX) were studied by electrophysiological techniques. The percentages of abnormalities detected in nerve conduction studies and electroencephalograms were 28.6% (two patients) and 100%, respectively. All patients showed prolonged central conduction times in short latency somatosensory evoked potentials (SSE
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15. Technique of hearing preservation in small acoustic neuromas.
The ideal operation for acoustic neurinoma would not only provide total excision without injury to the brain stem and with preservation of facial nerve function, but would also allow retention of useful hearing in those patients who come to operation with intact hearing function. Documented preservation of useful hearing in the rather extensive literature co
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16. Evoked potentials in the diagnosis of multiple sclerosis: a follow up study.
Visual, somatosensory and brain stem auditory evoked potentials were recorded in 84 patients in whom the diagnosis of multiple sclerosis was under consideration. The patients were followed up for a maximum of 38 months or until a definite diagnosis of multiple sclerosis or of some other condition was established. Seven patients were found not to have multipl
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17. Delayed cyanide induced dystonia.
A 16 year old man ingested 1 g potassium cyanide in 1969. A few days after an apparently full recovery he developed a severe dystonia syndrome. He had a positive response to an apomorphine test and showed improvement with levodopa treatment. A 21 year follow up showed minimal neurological sequelae; CT showed bilateral putaminal lucencies. Visual and brain st
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18. The combined monitoring of brain stem auditory evoked potentials and intracranial pressure in coma. A study of 57 patients.
Continuous monitoring of brainstem auditory evoked potentials (BAEPs) was carried out in 57 comatose patients for periods ranging from 5 hours to 13 days. In 53 cases intracranial pressure (ICP) was also simultaneously monitored. The study of relative changes of evoked potentials over time proved more relevant to prognosis than the mere consideration of "sta
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19. Short latency evoked potentials: new criteria for brain death?
The aim of this study was to evaluate whether the auditory brain stem responses (ABR) and short latency somatosensory potentials (SEP) from median nerve stimulation are effective tools in the confirmation of brain death. Thirty six brain dead patients were submitted to ABR and 24 to SEP in the same session. All waves of the ABR were absent in 28 (77.8 per ce
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20. A clinical and electrophysiological study of patients with polychlorinated biphenyl poisoning.
Neurological examination of 28 patients, 4 years after serious poisoning by polychlorinated biphenyl contaminated cooking oil, are compared with similar examinations of the same patients two years earlier (in 1980). Clinical peripheral sensory neuropathy was found in 54%, headache in 36% and dizziness in 46% of the patients; these findings did not differ (p