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Journal of Korean Neurosurgical Society 1981;10(2): 719-730. |
| Evoked Responses in Intracranial Aneurysms and Arteriovenous Malformations. |
| Gook Ki Kim |
| Department of Neurosurgery, School of Medicine, Kyung Hee University, Seoul, Korea. |
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| ABSTRACT |
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Somatosensory evokd responses(SSERs) and auditory evoked responses(AERs) were studied in 33 patients with cerebral aneurysms and arteriovenous malformations(AVMs) to see if these tests were useful indicators of cerebral vasospasm.
7/21 had abnormal SSER and 5/28 an abnormal AER. The SSER was abnormal in 4/7 patients with severe vasospasm but in only 1/13 without spasm or with mild or moderate spasm.
Abnormal SSERs in patients with severe vasospasm indicated a poor prognosis. Abnormalities on the SSER and AER correlated best with the degree of clinical deficit. These tests seemed insufficiently sensitive to reliable detect impending ischemia. |
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