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Bruit

Abnormal sound from turbulent arterial blood flow

Field	Value
name	Bruit
pronounce	,
field	Cardiology
synonyms	Vascular murmur

Bruit, also called vascular murmur, is the abnormal sound generated by turbulent flow of blood in an artery due to either an area of partial obstruction or a localized high rate of blood flow through an unobstructed artery.

The bruit may be heard ("auscultated") by securely placing the head of a stethoscope to the skin over the turbulent flow, and listening. Most bruits occur only in systole, so the bruit is intermittent and its frequency dependent on the heart rate. Anything increasing the blood flow velocity such as fever, anemia, hyperthyroidism, or physical exertion, can increase the amplitude of the bruit.

Etymology

It is naturalized from the French word for "noise", although another notes that and are also common, and others give only for the cardiac sense.

Associated terms

Describing location of a partial obstruction

Peripheral vascular disease; femoral artery stenosis
Renal artery stenosis
Stroke, carotid artery stenosis
Aortic aneurysm
Tinnitus – a symptom which may be caused by a cranial artery bruit
Arteriovenous malformation
Coarctation of the aorta
Hepatocellular carcinoma
Alcoholic hepatitis

Describing the mechanism of a partial obstruction

Atherosclerosis (atheroma or plaque) (cholesterol deposition in artery wall)
Median arcuate ligament syndrome, celiac artery stenosis – external compression

Describing location of localized high blood flow

Arteriovenous (AV) fistula – pathologic or surgically created
Graves' disease, goitre
Paget's disease

Unclassified

Polymyalgia rheumatica
Giant cell arteritis
Fibromuscular dysplasia
IgG4-related disease

References

Houghton Mifflin Harcourt. "The American Heritage Dictionary of the English Language". Houghton Mifflin Harcourt.
Elsevier. "Dorland's Illustrated Medical Dictionary". Elsevier.
{{DorlandsDict. two/000014858. bruit
{{DorlandsDict. five/000068147. vascular murmur
Wolters Kluwer. "Stedman's Medical Dictionary". Wolters Kluwer.
Merriam-Webster. "Merriam-Webster's Medical Dictionary". Merriam-Webster.
Merriam-Webster. "Merriam-Webster's Unabridged Dictionary". Merriam-Webster.

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

symptoms-and-signs:-vascular

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