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Surgical morbidity was 15.3%. Early new deficits were noted in 39.3%, permanent new deficits in 10.6%, being significant (major) in 7.3%. The occurrence of permanent deficits correlated significantly with size, deep venous drainage, and the Spetzler-Martin scale. There was statistical evidence for a trend in risk of poor surgical outcome across the three categories non-eloquent, "less eloquent" (for example, visual cortex) and "highly eloquent" (brainstem, basal ganglia, or precentral cortex) with the last being associated with the highest risk for permanent neurological compromise. "Eloquence" of the Spetzler-Martin scale should be divided into "highly eloquent" and "less eloquent", which is important for risk analysis of the treatment of asymptomatic and deep seated AVMs and for future trials comparing various treatment modalities. In addition, resection of eloquent ones is significantly associated with higher surgical morbidity. |
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arteriovenous malformation
arteriovenous malformation,cerebral
cerebrovascular disease,surgical treatment of
malformation,vascular
malformation,vascular,cerebral
malformation,vascular,treatment of
neurologic complications of,surgery
prognosis
risk factors
treatment of neurologic disorder
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