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Bruit

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Bruit
Other names Vascular murmur
Pronunciation
Specialty Cardiology

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 /ˈbri/ and /brˈ/ are also common, and others give only /ˈbri/ for the cardiac sense.

Associated terms

Describing location of a partial obstruction

Describing the mechanism of a partial obstruction

Describing location of localized high blood flow

Unclassified

See also

External links



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