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arteriovenous malformation |
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Arteriovenous malformation
An abnormal tangle of arteries and veins in which the arteries feed directly into the veins without a normal intervening capillary bed. Mentioned in: Barbiturate-Induced Coma, Subarachnoid Hemorrhage
arteriovenous malformation Neurology A potentially fatal congenital intracranial anomaly with large arteries feeding in a mass of communicating vessels which empty into large draining veins filled with 'arterialized' blood; large
AVMs produce a shunt large enough to ↑ cardiac output Location Brain, medulla, spinal cord Clinical Headaches, seizures, subarachnoid hemorrhage Imaging CT, MRI, endovascular angiography ASAP Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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