Medical

active vasoconstriction

ac·tive va·so·con·stric·tion

reduction of the caliber of a vessel caused by increased tonus of smooth muscle in the vessel wall.
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive
In 1971, Mike published his first landmark paper on this topic in The Lancet [1] By employing the innovative 133Xe washout technique, Mike and colleagues clearly demonstrated for the first time that a decrease in creatinine clearance is invariably associated with significant cortical hypoperfusion, likely attributable to active vasoconstriction of the cortical vessels.
Activation of sympathetic nerves leads to active vasoconstriction, and a decrease in sympathetic activity leads to passive vasodilatation.
Copyright © 2003-2025 Farlex, Inc Disclaimer
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.