Definitions for quinidineˈkwɪn ɪˌdin, -dɪn
This page provides all possible meanings and translations of the word quinidine
Random House Webster's College Dictionary
quin•i•dineˈkwɪn ɪˌdin, -dɪn(n.)
a colorless, crystalline alkaloid, isomeric with quinine, obtained from cinchona bark and used for treating malaria and arrhythmia.
Origin of quinidine:
1830–40; quin (ine ) + -idine
quinidine, Quinidex, Quinora(noun)
cardiac drug (trade names Quinidex and Quinora) used to treat certain heart arrhythmias
An isomer of quinine that is used as an antiarrhythmic agent
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
Quinidine is a pharmaceutical agent that acts as a class I antiarrhythmic agent in the heart. It is a stereoisomer of quinine, originally derived from the bark of the cinchona tree. The drug causes increased action potential duration, as well as a prolonged QT interval.
U.S. National Library of Medicine
An optical isomer of quinine, extracted from the bark of the Cinchona tree and similar plant species. This alkaloid dampens the excitability of cardiac and skeletal muscles by blocking sodium and potassium currents across cellular membranes. It prolongs cellular action potential, and decreases automaticity. Quinidine also blocks muscarinic and alpha-adrenergic neurotransmission.
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