Classification and external resources
Specialty angiology
ICD-10 R01.1, R09.8
ICD-9-CM 785.9
DiseasesDB 29151
MeSH D006337

Bruit (English: /ˈbrt/ or /ˈbri/,[lower-alpha 1] from French [bʁɥi], "noise"), also called vascular murmur,[6] 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.[7]

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.

Associated terms

Describing location of a partial obstruction

Describing the mechanism of a partial obstruction

Describing location of localized high blood flow


See also


  1. Several major dictionaries enter only /ˈbrt/ as the pronunciation of the English word[1][2] (naturalized from the French word), although another notes that /ˈbri/ and /brˈ/ are also common,[3] and others give only /ˈbri/ for the cardiac sense.[4][5]


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