... ]. Time-aligned 2-s averages for velocity and diameter from cuff release until peak dilation were computed. Shear rate for each period was calculated as velocity/diameter. The shear stimulus that contributed to FMD was defined as the portion of reactive hyperaemia between cuff release and peak diameter...

... conditions and platelet cytosolic free Ca 2+ concentration in vitro were studied after a dynamic perturbation induced by 3 months of double-blind treatment with one of two β-antagonists, carteolol and atenolol. Brachial artery wall shear rate and stress were estimated by means of a pulsed Doppler velocimeter...

... with exercise was probably due in part to pulsatile venous outflow. In addition, changes in microvessel packed cell volume and shear rate may influence the observed QZ p . It is concluded that impedance plethysmography is not valid for estimation of limb blood flow during reactive hyperaemia after exercise...