Flow-mediated dilation
Dilation of an artery when blood flow increases in that artery / From Wikipedia, the free encyclopedia
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Flow-mediated dilation (FMD) refers to dilation (widening) of an artery when blood flow increases in that artery.[1][2] The primary cause of FMD is release of nitric oxide by endothelial cells.[1]
To determine FMD, brachial artery dilation following a transient period of forearm ischemia is measured using ultrasound.[3] Because the value of FMD can be compromised when improperly applied, attempts have been made to standardize the methodology for measuring FMD.[4]