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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 ...
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 ...
Class of antihypertensives that bind to and inhibit the angiotensin II receptor type 1 and thereby block the arteriolar contraction and sodium retention effects of renin–angiotensin system. Azilsartan medoxomil
Flecainide is a class Ic antiarrhythmic agent. [1] It works by decreasing the entry of sodium in heart cells, causing prolongation of the cardiac action potential. [1] Flecainide was approved for medical use in the United States in 1985. [1] It is available as a generic medication. [3]
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 ...
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.
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Ajmaline (also known by trade names Gilurytmal, Ritmos, and Aritmina) is an alkaloid that is classified as a 1-A antiarrhythmic agent.It is often used to induce arrhythmic contraction in patients suspected of having Brugada syndrome.