sympathomimetic

sympathomimetic
adj.
having the effect of stimulating the sympathetic nervous system. The actions of sympathomimetic drugs are adrenergic: they act on alpha or beta adrenoceptors. Alpha-adrenergic stimulants (alpha agonists) stimulate alpha receptors. They include vasoconstrictors (e.g. ephedrine, phenylephrine, metaraminol), used to treat nasal congestion and severe hypotension, and the selective α2 agonists apraclonidine and brimonidine, which are used in the treatment of glaucoma. Beta-adrenergic stimulants (beta agonists) stimulate β1 and/or β2 adrenoceptors. β2 agonists such as salbutamol, salmeterol, and terbutaline relax bronchial smooth muscle and are used as bronchodilators. Other β2 agonists, including ritodrine (Yutopar), relax uterine muscle and are used in the treatment of premature labour. β1 agonists (e.g. dobutamine) stimulate β1 receptors in the heart and are therefore used for their inotropic effects.

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  • sympathomimetic — [sim΄pə thōmi met′ik, sim΄pə thōmīmet′ik] adj. [< SYMPATH(ETIC) + O + MIMETIC] having an effect similar to that produced when the sympathetic nervous system is stimulated: said of certain drugs, chemicals, etc …   English World dictionary

  • sympathomimetic — Denoting mimicking of action of the sympathetic system. SEE ALSO: adrenomimetic. [sympatho + G. mimikos, imitating] * * * sym·pa·tho·mi·met·ic mə met ik, (.)mī adj simulating sympathetic nervous action in physiological effect compare… …   Medical dictionary

  • sympathomimetic — adjective Etymology: International Scientific Vocabulary Date: 1910 simulating sympathetic nervous action in physiological effect < sympathomimetic drugs > • sympathomimetic noun …   New Collegiate Dictionary

  • sympathomimetic — sym•pa•tho•mi•met•ic [[t]ˌsɪm pə θoʊ mɪˈmɛt ɪk, maɪ [/t]] adj. 1) pha phl mimicking stimulation of the sympathetic nervous system 2) a sympathomimetic drug or agent • Etymology: 1905–10; sympath (etic) + o +mimetic …   From formal English to slang

  • sympathomimetic Medicine — [ˌsɪmpəθəʊmɪ mɛtɪk, mʌɪ ] adjective promoting the stimulation of sympathetic nerves. noun a sympathomimetic drug …   English new terms dictionary

  • Sympathomimetic drug — multiple image footer = Chemical structures of catecholamines. width = 150 align = right caption1 = Epinephrine caption2 = Norepinephrine caption3= Dopamine Sympathomimetic drugs are substances that mimic the effects of the catecholamines… …   Wikipedia

  • sympathomimetic — /sim peuh thoh mi met ik, muy /, Physiol., Pharm. adj. 1. mimicking stimulation of the sympathetic nervous system. n. 2. an agent that mimics the stimulation of the sympathetic nervous system. [1905 10; SYMPATH(ETIC) + O + MIMETIC] * * * …   Universalium

  • sympathomimetic — 1. adjective That produces effects similar to those of the sympathetic nervous system 2. noun Any medicine with this effect …   Wiktionary

  • sympathomimetic — sym·pa·tho·mimetic …   English syllables

  • sympathomimetic — /sɪmpæθoʊməˈmɛtɪk/ (say simpathohmuh metik) noun 1. one of a class of drugs whose effects mimic those of a stimulated sympathetic nervous system, increasing cardiac output, dilating bronchioles and constricting blood vessels. –adjective 2. of or… …  

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