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Abstract

Correlation of pressure measurements with angiographic characteristics predisposing to hemorrhage and steal in cerebral arteriovenous malformations.

A M Norbash, M P Marks and B Lane
American Journal of Neuroradiology May 1994, 15 (5) 809-813;
A M Norbash
Department of Radiology, Stanford University Medical Center, CA 94305-5105.
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M P Marks
Department of Radiology, Stanford University Medical Center, CA 94305-5105.
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B Lane
Department of Radiology, Stanford University Medical Center, CA 94305-5105.
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Abstract

PURPOSE To determine whether there is a physiologic explanation for the predisposition of patients with certain angiographic characteristics to symptoms of hemorrhage and steal.

METHODS Superselective transcatheter feeding arterial pressure and mean arterial pressure measurements were obtained before embolotherapy in 32 patients with cerebral arteriovenous malformations. Pressures were correlated with previously described angioarchitectural characteristics predisposing to hemorrhage and steal. These included size of the arteriovenous malformation, feeding artery length, venous drainage pattern, and angiomatous change.

RESULTS The feeding arterial pressure and feeding arterial pressure/mean arterial pressure ratios were significantly decreased in patients with angiomatous change. Feeding arterial pressure and feeding arterial pressure/mean arterial pressure ratios progressively decreased as lesions went from peripheral, to mixed, to central venous drainage. A trend for lower feeding arterial pressure was also demonstrated with greater feeding pedicle length. A statistically significant correlation could not be demonstrated between feeding arterial pressure or feeding arterial pressure/mean arterial pressure ratios and size of the arteriovenous malformation, hemorrhage, or symptoms of steal.

CONCLUSIONS Feeding arterial pressure measurements help provide a physiologic basis for the relationship between certain angiographic characteristics and hemorrhage and steal symptoms in patients with arteriovenous malformation.

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American Journal of Neuroradiology
Vol. 15, Issue 5
1 May 1994
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Correlation of pressure measurements with angiographic characteristics predisposing to hemorrhage and steal in cerebral arteriovenous malformations.
A M Norbash, M P Marks, B Lane
American Journal of Neuroradiology May 1994, 15 (5) 809-813;

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Correlation of pressure measurements with angiographic characteristics predisposing to hemorrhage and steal in cerebral arteriovenous malformations.
A M Norbash, M P Marks, B Lane
American Journal of Neuroradiology May 1994, 15 (5) 809-813;
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