β-Quinine; one of the alkaloids of cinchona, a stereoisomer of quinine (the C-9 epimer); used as an antimalarial; also used in the treatment of atrial fibrillation and flutter, and paroxysmal ventricular tachycardia. SYN: conquinine.
- q. polygalacturonate a salt of q. that may be used in place of q. sulfate; antiarrhythmic agent. See q. sulfate. SEE ALSO: q..
- q. sulfate the salt of q. that is customarily administered as a cardiac antiarrhythmic agent. The drug depresses myocardial conduction, contraction, automaticity and contraction; it also by a direct effect impairs conduction through the atrioventricular node. Has vagolytic action that may increase heart rate. SEE ALSO: q..

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quin·i·dine 'kwin-ə-.dēn, -dən n a crystalline dextrorotatory stereoisomer of quinine found in some species of cinchona and used chiefly in the form of its hydrated sulfate (C20H24N2O2)2·H2SO4·2H2O to treat irregularities of cardiac rhythm and sometimes in place of quinine as an antimalarial

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a drug that slows down the activity of the heart and is administered by mouth to control abnormal and increased heart rhythm. Digestive upsets and symptoms of cinchonism may occur as side-effects. Trade name: Kinidin Durules.

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quin·i·dine (kwinґĭ-dēn) the dextrorotatory isomer of quinine obtained from various species of Cinchona and their hybrids, and from Remijia pedunculata, or prepared from quinine. It has cardiac depressant activity, and is as potent an antimalarial as quinine but is rarely used for the latter effect except when quinine is not immediately available.

Medical dictionary. 2011.

Look at other dictionaries:

  • Quinidine — Systematic (IUPAC) name (9S) 6 methoxycinchonan 9 ol …   Wikipedia

  • QUINIDINE — Alcaloïde de formule brute C20H2422, extrait de l’écorce de divers quinquinas (Cinchona ), plantes de la famille des rubiacées; ce sont de petits arbustes découverts à l’état sauvage en Amérique du Sud, plus particulièrement dans la cordillère… …   Encyclopédie Universelle

  • Quinidine — Général Nom IUPAC (9S) 6 méthoxycinchonan 9 ol No CAS …   Wikipédia en Français

  • Quinidine — Quin i*dine, n. (Chem.) An alkaloid isomeric with, and resembling, quinine, found in certain species of cinchona, from which it is extracted as a bitter white crystalline substance; conchinine. It is used somewhat as a febrifuge. [Written also… …   The Collaborative International Dictionary of English

  • quinidine — [kwin′ə dēn΄, kwin′idin] n. [< quina (see QUININE) + ID + INE3] a colorless, crystalline alkaloid, C20H24N2O2, isomeric with and resembling quinine, extracted from cinchona bark …   English World dictionary

  • quinidine — /kwin i deen , din/, n. Pharm. a colorless, crystalline alkaloid, C20H24N2O2, isomeric with quinine, obtained from the bark of certain species of cinchona trees or shrubs, used chiefly to regulate heart rhythm and to treat malaria. [1830 40;… …   Universalium

  • quinidine — chinidinas statusas T sritis chemija apibrėžtis Chinino stereoizomeras. atitikmenys: angl. quinidine rus. хинидин …   Chemijos terminų aiškinamasis žodynas

  • quinidine — noun Etymology: International Scientific Vocabulary, from quinine Date: 1836 an alkaloid C20H24N2O2 that is stereoisomeric with quinine and is used in the form of its sulfate or gluconate to treat cardiac rhythm irregularities …   New Collegiate Dictionary

  • quinidine — noun An isomer of quinine that is used as an antiarrhythmic agent …   Wiktionary

  • quinidine — (ki ni di n ) s. f. Terme de chimie. Composé isomère de la quinine, mais hydraté, efflorescent, et bien plus dextrogyre que la quinicine …   Dictionnaire de la Langue Française d'Émile Littré

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