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The extent of vasoconstriction may be slight or severe depending on the substance or circumstance. Many vasoconstrictors also cause pupil dilation. Medications that cause vasoconstriction include: antihistamines, decongestants, and stimulants. Severe vasoconstriction may result in symptoms of intermittent claudication. [1]
Generalized vasoconstriction usually results in an increase in systemic blood pressure. Pages in category "Vasoconstrictors" The following 38 pages are in this ...
Alpha 1 blockers cause vasodilation by relaxing smooth muscles that control blood vessel diameter, leading to lower blood pressure. [1] FDA-approved uses of these drugs include treating conditions like benign prostatic hyperplasia, hypertension, pheochromocytoma, extravasation management, and reversal of local anesthesia.
It causes vasoconstriction in many blood vessels, including those of the skin, gastrointestinal system, kidney (renal artery) [16] and brain. [17] Other areas of smooth muscle contraction are: ureter; vas deferens; hair (arrector pili muscles) uterus (when pregnant) urethral sphincter; urothelium and lamina propria [18]
Since β 2 adrenergic receptors can cause vascular smooth muscle dilation, beta blockers may cause some vasoconstriction. However, this effect tends to be small because the activity of β 2 receptors is overshadowed by the more dominant vasoconstricting α 1 receptors.
Like other β adrenergic agonists, they cause smooth muscle relaxation. β 2 adrenergic agonists' effects on smooth muscle cause dilation of bronchial passages, vasodilation in muscle and liver, relaxation of uterine muscle, and release of insulin. They are primarily used to treat asthma and other pulmonary disorders.
Again, these interactions can cause dangerous hypotension. Furthermore, in rare cases, drug interactions can cause irregular, rapid heartbeats or an increase blood pressure. [2] Yohimbine can interact with stimulants, hypertension drugs, naloxone, and clonidine. Interactions with such drugs can cause either an unintended increase in blood ...
Angiotensin II is a naturally occurring hormone secreted as part of the renin-angiotensin system that results in powerful systemic vasoconstriction. [ 6 ] [ 7 ] The vasopressor effects of angiotensin have been studied since it was first isolated in the late 1930s. [ 8 ]