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  2. Amiodarone - Wikipedia

    en.wikipedia.org/wiki/Amiodarone

    It also shows beta blocker-like and calcium channel blocker-like actions on the SA and AV nodes, increases the refractory period via sodium- and potassium-channel effects, and slows intra-cardiac conduction of the cardiac action potential, via sodium-channel effects. It is suggested that amiodarone may also exacerbate the phenotype associated ...

  3. Potassium channel blocker - Wikipedia

    en.wikipedia.org/wiki/Potassium_channel_blocker

    Potassium channel blockers exhibit reverse use-dependent prolongation of the action potential duration. Reverse use dependence is the effect where the efficacy of the drug is reduced after repeated use of the tissue. [11] This contrasts with (ordinary) use dependence, where the efficacy of the drug is increased after repeated use of the tissue.

  4. Antiarrhythmic agent - Wikipedia

    en.wikipedia.org/wiki/Antiarrhythmic_agent

    Potassium channel blockers Amiodarone; Dofetilide; Dronedarone; E-4031; Ibutilide; Sotalol; Vernakalant; K + channel blocker. Sotalol is also a beta blocker [5] Amiodarone has mostly Class III activity, but also I, II, & IV activity [6] Prevent paroxysmal atrial fibrillation [7] and haemodynamically stable ventricular tachycardia [8] (amiodarone)

  5. Drug-induced QT prolongation - Wikipedia

    en.wikipedia.org/wiki/Drug-induced_QT_prolongation

    Class III antiarrhythmic drugs are potassium channel blockers that cause QT prolongation and are associated with TdP. Amiodarone. Amiodarone works in many ways. It blocks sodium, potassium, and calcium channels, as well as alpha and beta adrenergic receptors. Because of its multiple actions, amiodarone causes QT prolongation but TdP is rarely ...

  6. List of cardiac pharmaceutical agents - Wikipedia

    en.wikipedia.org/wiki/List_of_cardiac...

    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

  7. Category:Potassium channel blockers - Wikipedia

    en.wikipedia.org/wiki/Category:Potassium_channel...

    This page was last edited on 10 February 2018, at 11:08 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

  8. Pharmacological cardiotoxicity - Wikipedia

    en.wikipedia.org/wiki/Pharmacological_cardiotoxicity

    Class I antiarrhymics lead to blockage of sodium channels. Class II antiarrhymatics are beta-adrenoceptor blockers. Class III antiarrhymics act as potassium channel blockers, while Class IV antiarrhymics are non-dihydropyridine calcium channel blockers. While the effects of these drugs may be antiarrhymic, they can also be proarrhymic in other ...

  9. Category:Antiarrhythmic agents - Wikipedia

    en.wikipedia.org/wiki/Category:Antiarrhythmic_agents

    Beta blockers (119 P) C. Calcium ... Potassium channel blockers (1 C, 66 P) S. Sodium channel blockers (1 C, 77 P) Pages in category "Antiarrhythmic agents ...