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Original Article

Preembolization functional evaluation in supratentorial cerebral arteriovenous malformations with superselective intraarterial injection of thiopental sodium solution

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Pages 212-216 | Accepted 31 Oct 1993, Published online: 04 Jan 2010
 

Abstract

Superselective intraarterial injections of thiopental sodium solution for evaluation of local brain function were performed before embolization in 38 consecutive patients with supratentorial arteriovenous malformations to evaluate the role of the test using thiopental sodium solution. Thiopental sodium (30–50 mg) was injected in 68 arteries (44 middle cerebral arteries, 13 anterior cerebral arteries, 7 posterior cerebral arteries, 3 external carotid arteries, and 1 thalamo-perforating artery) through superselective microcatheters just before the injection of cyanoacrylate mixture for the embolization. The test was negative in 57 arteries and there were neurologic dysfunctions in 3 of them after embolization. The neurologic deficits in these cases were caused by reflux of embolic material, spasm of the main arterial trunk, or neglected mild sensory change, respectively, and there was no real false-negative test. The embolization could not be performed due to positive test in 9 arteries. Two arteries with positive tests but acceptable symptoms were embolized and the same neurologic deficits developed immediately after embolization. There was no local arterial complication by an injection of the thiopental sodium solution. All neurologic deficits caused by positive tests developed immediately and were completely relieved within 5 min without specific management. Superselective intraarterial injection of thiopental sodium solution is a safe and reliable test for the evaluation of local brain function before embolization of supratentorial arteriovenous malformations.

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