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The five main classes in the Vaughan Williams classification of antiarrhythmic agents are: Class I agents interfere with the sodium (Na +) channel. Class II agents are anti-sympathetic nervous system agents. Most agents in this class are beta blockers. Class III agents affect potassium (K +) efflux. Class IV agents affect calcium channels and ...
ATC code C01 Cardiac therapy is a therapeutic subgroup of the Anatomical Therapeutic Chemical Classification System, a system of alphanumeric codes developed by the World Health Organization (WHO) for the classification of drugs and other medical products.
Disopyramide (INN, trade names Norpace and Rythmodan) is an antiarrhythmic medication used in the treatment of ventricular tachycardia. [2] It is a sodium channel blocker and is classified as a Class 1a anti-arrhythmic agent. [3] [4] Disopyramide has a negative inotropic effect on the ventricular myocardium, significantly decreasing the ...
Of the sodium channel blocking antiarrhythmic agents (the class I antiarrhythmic agents), the class Ic agents have the most potent sodium channel blocking effects. Class Ic agents are indicated for supraventricular arrhythmias (i.e. atrial fibrillation ) and as a last line treatment for refractory life-threatening ventricular tachycardia or ...
Pages in category "Antiarrhythmic agents" The following 59 pages are in this category, out of 59 total. This list may not reflect recent changes. ...
Sparteine is a class 1a antiarrhythmic agent and sodium channel blocker. It is an alkaloid and can be extracted from scotch broom.It is the predominant alkaloid in Lupinus mutabilis, and is thought to chelate the bivalent metals calcium and magnesium.
Antiarrhythmics are broad class of drugs that are used treat heart rhythm irregularities. [16] Utilizing the Vaughan-Williams (VW) system, antiarrhymic drugs are classified into four main classes based on their mechanism of action. Class I antiarrhymics lead to blockage of sodium channels. Class II antiarrhymatics are beta-adrenoceptor blockers.
Quinidine is a class IA antiarrhythmic agent used to treat heart rhythm disturbances. [1] It is a diastereomer of antimalarial agent quinine, [2] originally derived from the bark of the cinchona tree. The drug causes increased action potential duration, as well as a prolonged QT interval. As of 2019, its IV formulation is no longer being ...