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Neuropsychological Effects of Brain Arteriovenous Malformations

  • Emily R. Lantz
  • Ronald M. Lazar
Chapter

Introduction

Brain arteriovenous malformations (AVMs) are congenital vascular malformations, which can be located in any part of the brain (cortical, sub-cortical, dural, or brain stem). They are vascular anomalies which are made up of a complex tangle of abnormal veins and arteries that are missing a capillary bed (AVM Study Group, 1999; Stapf, Mohr, Pile-Spellman et al., 2001) and instead, artery and vein are connected by fistulas and characterized by “shunting” of blood from artery to vein (Bambakidis et al., 2001; Klimo, Rao, & Brockmeyer, 2007; O'Brien, Neyastani, Buckley, Chang, & Legiehn, 2006). This shunting mechanism causes hypertension within the AVM and in the draining vein (AVM Study Group, 1999; Iwama, Hayashida, Takahashi, Nagata, & Hashimoto, 2002; Loring, 1999) and hypotension in the surrounding and feeding vessels (AVM Study Group, 1999). The feeding arteries have high volume flow with low pressure, creating hypoperfusion in surrounding normal brain tissue with little...

Keywords

Arteriovenous Malformation Regional Cerebral Blood Flow Interventional Neuroradiologist Brain AVMs Eloquent Cortex 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Authors and Affiliations

  1. 1.Neurological InstituteNew YorkUSA

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