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.
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