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

arteriovenous malformation

An abnormal, congenital network or clump of blood vessels linking an artery and a vein. These may occur anywhere in the body but are especially dangerous within the skull. The commonest presentation is a SUBARACHNOID HAEMORRHAGE. Blood flow though an arteriovenous malformation is often rapid and may be audible through the skull with a stethoscope.

Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

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

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References in periodicals archive

''Steal'' is an unestablished mechanism for the clinical presentation of cerebral arteriovenous malformations. Stroke.

CHOREA CAUSED BY UNRUPTURED ARTERIOVENOUS MALFORMATION: CASE REPORT AND REVIEW OF LITERATURE

Predictive factors for response of peripheral arteriovenous malformations to embolization therapy: Analysis of clinical data and imaging findings.

Peripheral arteriovenous malformations: Classification and endovascular treatment

Head and neck arteriovenous malformations: Results of ethanol sclerotherapy.

Giant arteriovenous malformation of scalp - A rare case report

Leandro et al., "Contrast echocardiography for pulmonary arteriovenous malformations screening: does any bubble matter?" European Journal of Echocardiography, vol.

Pulmonary Arteriovenous Malformation Causing Systemic Hypoxemia in Early Infancy

Matsubara, "Transarterial embolization and ablation of renal arteriovenous malformations: efficacy and damages in 30 patients with long-term followup," Journal of Urology, vol.

Extensive Renal Arteriovenous Malformations Treated by Transcatheter Arterial Embolization

Tradi et al., "Transcatheter arterial embolization with ethylene vinyl alcohol copolymer (Onyx) for the treatment of hemorrhage due to uterine arteriovenous malformations," Diagnostic and Interventional Imaging, vol.

Uterine Arteriovenous Fistula with Concomitant Pelvic Varicocele: Endovascular Embolization with Onyx-18[R]

Arteriovenous malformations (AVMs) are a rare source of potentially life-threatening uterine bleeding, and should be suspected in patients presenting with metromenorrhagia.

Diagnosis and treatment of an acquired uterine arteriovenous malformation in a 26-year-old woman presenting with vaginal bleeding

Pulmonary arteriovenous malformation. Postgrad Med J 2002;78:191-7.

Osler-Weber-Rendu syndrome complicated with pulmonary arteriovenous malformation: A case report and review of literatures

When an arteriovenous malformation (AVM) occurs, a tangle of blood vessels in the brain, or on its surface, bypasses normal brain tissue and directly diverts blood from the arteries to the veins.

A gorgeous boy, who was loved by everybody, with everything to live for... Mum of 10-year-old who died suddenly from rare condition pays tribute to her loving son and is hoping to raises vital awareness

Klippel-Trenaunay syndrome with intracranial arteriovenous malformation: a rare presentation.

Klippel-Trenaunay-Weber syndrome--a case report and review of the literature

He was diagnosed in January with an Arteriovenous Malformation (AVM), a tangle of blood vessels in the brain which puts suerers at high risk of stroke.

You have to make the most of life and that's what we intend to do; FAMILY'S HEARTBREAK AS DAD AND SON, 7, BOTH DIAGNOSEDWITH BRAIN TUMOURS - JU - JUSTMONTHS APART PART P