Vasoconstriction is the narrowing of the blood vessels resulting from contraction of the muscular wall of the vessels, in particular the large arteries...

Reversible cerebral vasoconstriction syndrome (RCVS, sometimes called Call-Fleming syndrome) is a disease characterized by a weeks-long course of thunderclap...

Hypoxic pulmonary vasoconstriction (HPV), also known as the Euler-Liljestrand mechanism, is a physiological phenomenon in which small pulmonary arteries...

and is determined by the autonomic nervous system. Vasodilation and vasoconstriction are also used antagonistically as methods of thermoregulation. The...

sympathetic nervous system activity. Vasodilation is the opposite of vasoconstriction, which is the narrowing of blood vessels. When blood vessels dilate...

Epinephrine (adrenaline) reacts with both α- and β-adrenoreceptors, causing vasoconstriction and vasodilation, respectively. Although α receptors are less sensitive...

on topical application as dilute solution (0.05–0.1%) produce local vasoconstriction. Regular use of decongestants for long periods should be avoided because...

be caused by artery blockages, rupture, mechanical compression, or vasoconstriction. The resulting lesion is referred to as an infarct (from the Latin...

effects are on the cardiovascular system, which displays peripheral vasoconstriction, slowed heart rate, redirection of blood to the vital organs to conserve...

and vascular components. Hemostasis consists of four main stages: Vasoconstriction (vasospasm or vascular spasm): Here, this refers to contraction of...

The hunting reaction or hunting response is a process of alternating vasoconstriction and vasodilation in extremities exposed to cold. The term Lewis reaction...

may be beneficial not only by augmenting sympathetically mediated vasoconstriction, but also because a large subset of POTS patients appear to have low...

Angiotensin is a peptide hormone that causes vasoconstriction and an increase in blood pressure. It is part of the renin–angiotensin system, which regulates...

sustained hypotension (decrease in blood pressure) Vasoconstriction of certain arteries Vasoconstriction of arteries to heart (coronary artery); however...

tolerable than sumatriptan. Rizatriptan and other triptans can cause vasoconstriction, they are contraindicated in people with cardiovascular conditions...

causing local vasoconstriction in the nose. Whereas the related sympathomimetic decongestant pseudoephedrine causes both vasoconstriction and increase...

release epinephrine and norepinephrine, which results in peripheral vasoconstriction (reducing size of blood vessels) in order to conserve the circulating...

frostbite, cooling of the body causes narrowing of the blood vessels (vasoconstriction). Prolonged exposure to temperatures below −2 °C (28 °F) may cause...

iron deficiency, vitamin B12 deficiency, fevers, fibromyalgia or vasoconstriction. There may also be differences in people in the expression of uncoupling...

direct) effect of sympathetic stimulation on coronary arteries is vasoconstriction followed by a secondary vasodilation caused by the release of vasodilatory...

these neurotransmitters. Activation of α-adrenergic receptors promotes vasoconstriction, while the activation of β-adrenergic receptors mediates the relaxation...

of vasoconstrictive responses within the body, including pulmonary vasoconstriction – a possible mechanism in which oxygenation decreases during pneumonia...

ergot-containing medications within 24 hours can result in additive vasoconstriction. Increased systemic exposure to sumatriptan can occur if used within...

promoting coagulation. Locally acting hemostatic agents work by causing vasoconstriction or promoting platelet aggregation. Hemostatic agents are used during...

blood vessels the principal effect of activation of these receptors is vasoconstriction. Blood vessels with α1-adrenergic receptors are present in the skin...

pulmonary circulation is known as the pulmonary vascular resistance. Vasoconstriction (i.e., decrease in the diameter of arteries and arterioles) increases...

oxymetazoline results in vasoconstriction. In addition, the local application of the drug also results in vasoconstriction due to its action on endothelial...

bicarbonate and cocaine that is used to provide topical analgesia and vasoconstriction during ear, nose, and throat surgery, especially for operations on...

in the brain alone it causes vasoconstriction (narrowing of the blood vessels)[citation needed]. This vasoconstriction appears to be made even worse...

β2-adrenergic receptor antagonist activity (bronchospasm, peripheral vasoconstriction, alteration of glucose and lipid metabolism) are less common with β1-selective...