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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 ...
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; Candesartan; Eprosartan; Fimasartan; Irbesartan; Losartan; Olmesartan; Telmisartan; Valsartan
Verapamil is a class-IV antiarrhythmic and more effective than digoxin in controlling ventricular rate. [19] Verapamil is not listed as a first line antihypertensive agent by the guidelines provided by JAMA in JNC-8. [20] However, it may be used to treat hypertension if patient has co-morbid atrial fibrillation or other types of arrhythmia. [17 ...
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.
Amiodarone has particularly important interactions with the following drugs: class I antiarrhythmics (amiodarone should not be combined with other class I antiarrhythmic drugs, such as disopyramide, flecainide, procainamide, quinidine, etc., due to an increased risk of QTc prolongation and potential arrhythmias); [13]
Pages in category "Antiarrhythmic agents" The following 59 pages are in this category, out of 59 total. This list may not reflect recent changes. ...
Ibutilide is a Class III antiarrhythmic agent that is indicated for acute cardioconversion of atrial fibrillation and atrial flutter of a recent onset to sinus rhythm. It exerts its antiarrhythmic effect by induction of slow inward sodium current, which prolongs action potential and refractory period of myocardial cells. Because of its Class ...
This contrasts with (ordinary) use dependence, where the efficacy of the drug is increased after repeated use of the tissue. Reverse use dependence is relevant for potassium channel blockers used as class III antiarrhythmics. Reverse use dependent drugs that slow heart rate (such as quinidine) can be less effective at high heart rates. [11]