Brachial artery flow-mediated dilatation: different patterns of wall shear rate increase during reactive hyperaemia

Background: Wall shear rate (WSR) is considered an important stimulus for flow-mediated dilatation (FMD). However, its estimation by conventional ultrasound is challenging due to inherent difficulties of velocity estimation near the arterial wall. To evaluate how WSR influences brachial artery FMD, we used a prototype Doppler ultrasound system which provides simultaneous estimates of WSR at near and far walls and continuous arterial diameter tracking.

Source: Artery Research - November 25, 2016 Category: Cardiology Authors: Kunihiko Aizawa, Sara Sbragi, Alessandro Ramalli, Piero Tortoli, Francesco Casanova, Carmela Morizzo, Clare Thorn, Angela Shore, Phillip Gates, Carlo Palombo Source Type: research