Search results
Results from the WOW.Com Content Network
An arteriovenous malformation (AVM) is an abnormal connection between arteries and veins, bypassing the capillary system. Usually congenital , this vascular anomaly is widely known because of its occurrence in the central nervous system (usually as a cerebral AVM ), but can appear anywhere in the body.
A cerebral AVM is an abnormal anastomosis (connection) between the arteries and veins in the brain due to the lack of a capillary bed, and are most commonly of prenatal origin. [ 10 ] [ 11 ] In normal cerebral circulation , oxygen-enriched blood from the heart travels in sequence through smaller blood vessels going from arteries, to arterioles ...
With AVM, this whole capillary bed isn’t there, and a group of arteries directly link up with a group of veins instead. The vessels in the AVM can start to tangle up and are called a nidus, which is Latin for “nest”. When a single artery and a single vein link up abnormally like this, it’s called an arteriovenous fistula.
A vascular malformation is a type of vascular anomaly. [2] They may cause aesthetic problems as they have a growth cycle, and can continue to grow throughout life. Vascular malformations of the brain include those involving capillaries, and those involving the veins and arteries.
AVM: arteriovenous malformation: AVN: avascular necrosis atrioventricular node: AVR: aortic valve replacement: AVSD: atrioventricular septal defect: afebrile, vital signs stable A&W A/W: alive and well associated with admitted with Ax: axillary: AXR: abdominal x-ray: AYA: adolescents and young adults AZT: azidothymidine
When an arteriovenous fistula is formed involving a major artery like the abdominal aorta, it can lead to a large decrease in peripheral resistance.This lowered peripheral resistance causes the heart to increase cardiac output to maintain proper blood flow to all tissues.
Pronunciation follows convention outside the medical field, in which acronyms are generally pronounced as if they were a word (JAMA, SIDS), initialisms are generally pronounced as individual letters (DNA, SSRI), and abbreviations generally use the expansion (soln. = "solution", sup. = "superior").
AVM GmbH, a German manufacturer of broadband modems and consumer networking devices; AVM Productions, a film production house in Tamil Nadu, India A. V. Meiyappan, Indian filmmaker, founder of AVM Productions; AVM Runestone, an archaeological forgery found in 2001 near Kensington, Minnesota; MetroCity AVM, a modern shopping mall in Istanbul, Turkey