Effect of Cold Pressor Test on the Internal Diameter of the Radial Artery
- 1 September 1989
- journal article
- research article
- Published by Oxford University Press (OUP) in American Journal of Hypertension
- Vol. 2 (9) , 727-728
- https://doi.org/10.1093/ajh/2.9.727
Abstract
The aim of this study was to investigate in normal subjects the effect of a cold pressor test on the caliber of the radial artery, a muscular artery of medium size. The internal diameter of this artery was measured continuously using a recently developed ultrasonic device. Immersion of one hand in ice water for two minutes increased blood pressure from 115/75 ± 3/2 (Mean±SEM) to 136/90 ± 6/2 mm Hg (P <.001) and decreased the internal diameter of the radial artery from 2.82 ± 0.12 to 2.60 ± 0.09 mm ( P <.01). These data therefore indicate that the vasoconstriction induced by the cold pressor test involves not only arterioles, but also medium-size arteries. Am J Hypertens 1989; 2:727–728.Keywords
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