Evaluation of pressure changes in feeding arteries during embolization of intracerebral arteriovenous malformations.
The pressure in 47 arteries feeding 21 arteriovenous malformations (AVM's) was investigated during transarterial embolization using a Tracker-18 microcatheter. On average, systolic pressure increased by 22 mm Hg. In AVM's with single or few feeders, embolization was usually achieved well; in contrast, giant AVM's with multiple feeders and a large arteriovenous shunt were poorly embolized. However, large AVM's with well-demarcated components may be reduced by embolization to an appropriate size for surgery or stereotactic radiation therapy. It was found that the feeding artery pressure increased significantly more in well-embolized than in poorly embolized cases. Measurements of the feeding artery pressure clarified the hemodynamics of AVM's and facilitated more successful embolization.
Handa
T
T
Department of Neurosurgery, Nagoya University School of Medicine, Japan.
Negoro
M
M
Miyachi
S
S
Sugita
K
K
D000293:Adolescent; D000328:Adult; D001794:Blood Pressure; D002533:Cerebral Angiography; D002536:Cerebral Arteries / Q000503:physiopathology*; D004621:Embolization, Therapeutic; D005260:Female; D006439:Hemodynamics; D006801:Humans; D002538:Intracranial Arteriovenous Malformations / Q000000981:diagnostic imaging / Q000503:physiopathology* / Q000628:therapy*; D008297:Male; D008875:Middle Aged