antiadrenergic

(redirected from Adrenergic antagonist)
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Related to Adrenergic antagonist: Adrenergic agonist

sympatholytic

 [sim″pah-tho-lit´ik]
1. blocking transmission of impulses from the adrenergic (sympathetic) postganglionic fibers to effector organs or tissues, inhibiting such sympathetic functions as smooth muscle contraction and glandular secretion.
2. an agent that produces such an effect; called also antiadrenergic.

an·ti·ad·ren·er·gic

(an'tē-ad-rĕ-ner'jik),
Antagonistic to the action of sympathetic or other adrenergic nerve fibers.
See also: sympatholytic.

antiadrenergic

/an·ti·ad·re·ner·gic/ (-ad″rĕ-ner´jik)
1. sympatholytic; opposing the effects of impulses conveyed by adrenergic postganglionic fibers of the sympathetic nervous system.
2. an agent that so acts.

antiadrenergic

[an′ti·ad′rənur′jik, an′tī-]
Etymology: Gk, anti + L, ad + ren, to kidney
1 pertaining to the blockage of the effects of impulses transmitted by the adrenergic postganglionic fibers of the sympathetic nervous system.
2 an antiadrenergic agent. These drugs block the response to norepinephrine bound to alpha receptors and reduce the tonus of smooth muscle in peripheral blood vessels, causing increased peripheral circulation and decreased blood pressure. Alpha1-blocking agents include ergotamine derivatives, phenoxybenzamine, phentolamine, and tolazoline hydrochloride; they are used to treat conditions such as migraines, Raynaud's disease, pheochromocytoma, diabetic gangrene, and spastic vascular disease. Beta1-blocking agents decrease the rate and force of heart contractions and are administered for hypertension, angina, and arrhythmias; propranolol hydrochloride and its congeners are examples. Also called sympatholytic. Compare adrenergic, anticholinergic.

an·ti·ad·ren·er·gic

(an'tē-ad-rĕ-nĕr'jik)
Antagonistic to the action of sympathetic or other adrenergic nerve fibers.
See also: sympatholytic

antiadrenergic

agent antagonizing the effects of sympathetic nervous system activity

antiadrenergic

1. sympatholytic: opposing the effects of impulses conveyed by adrenergic postganglionic fibers of the sympathetic nervous system.
2. an antiadrenergic agent.

antiadrenergic drugs
include adrenergic blocking agents, both alpha- and beta-blockers, and adrenergic neuron-blocking drugs and catecholamine depleting agents.
References in periodicals archive ?
A pilot trial of prazosin, an alpha-1 adrenergic antagonist, for comorbid alcohol dependence and posttraumatic stress disorder.
19 Of the available a1-blockers, Tamsulosin is chosen for this study as it is a combined a1A and a1D-selective adrenergic antagonist.
2]- adrenergic antagonist yohimbine significantly interfered with the antinociceptibve effects of Catuama [R] (Fig.
I've used [the [alpha]-1 adrenergic antagonist Minipress] prazosin for sleep disturbances with prominent nightmares, with fairly good results," Dr.
Alpha-1 adrenergic antagonists are used to improve the urine flow in older men by relaxing the muscles in the bladder neck and prostatic smooth muscles (terazosin Hcl [Hytrin[R]]).
Currently there are five major classes of medications that are used to lower the IOP including beta adrenergic antagonists, alpha adrenergic agonists, parasympathomimetics, prostaglandin analogues, and carbonic anhydrase inhibitors6,8.
Beta adrenergic antagonists are used for many purposes, including the treatment of migraine headache, glaucoma, rapid heart rate, high blood pressure, tremors, and many other conditions.
Currently available treatments include adrenergic antagonists, NSAIDS, triptans, and OTC headache remedies.