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Doctor insights on: What Are The Classes Of Antiarrhythmic Medications

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What are the classes of antiarrhythmic medications?

What are the classes of antiarrhythmic medications?

I, II, III and IV: Class i is divided into ia, ib, and ic. These are sodium channel blockers. An example from this class would be propafenone. Class ii agents are beta-blockers (like metoprolol). Class iii are potassium channel blockers - for example, amiodarone. Class IV are calcium channel blockers, like diltiazem. ...Read more

Antiarrhythmic (Definition)

Antiarrythmics treat or prevent the heart from going out ...Read more


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How do class 1b antiarrhythmic drugs help in treating ventricular fibrillation?

How do class 1b antiarrhythmic drugs help in treating ventricular fibrillation?

Sodium Channels: Sodium channels are responsible for the action potential, the depolarization of the heart. These drugs decrease the excitability of the heart because they interfere with the sodium channels. So it will help against ventricular fibrillation. ...Read more

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Can you tell me about classes i and II antiarrhythmic medications (and digoxin)?

Can you tell me about classes i and II antiarrhythmic medications (and digoxin)?

Vaughan-Williams: What you are referring to, i believe, is what is called the vaughan-williams classification (circa 1970) of anti arrhythmic drugs. Class i drugs block sodium channels on the cells, class ii drugs block beta-receptors, class iii drugs block potassium channels, and class IV drugs block calcium channels. Digoxin does not fit the vaughn-williams classification, as its properties are different still. ...Read more

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What class of anti-arrhythmic is the drug procainamide?

Class 1A: Procainamide is a Class 1A Antiarrythmic. It is used in patients with certain arrhythmia problems and is part of the ACLS/PALS protocols. ...Read more

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Would you take an antiarrhythmic drug to maintain normal sinus rhythm?

Maybe: It depends. It won't prolong life or prevent strokes, but it may improve the quality of life if atrial fibrillation is significantly bothersome. Cather ablation is another option if drugs don't work or have significant side effects. ...Read more

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I taken flecainide. Before CABG, flecainide changed to amiodarone for a week. after CABG, may directly converted amiodron to other antiarrhythmic drug?

Antiarrythmic drug: What is your question ? Is it may amiodarone could be converted to other antiarrythmic? If clinical condition warrants a change, yes it could be changed to whatever the best for that situation. ...Read more

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Can AF (without an anti-arrhythmic drug) lead to VF. Does effective rate control prevent VF?

Unlikely: Atrial fibrillation does not usually lead to VF unless the person also has WPW syndrome. If one has not been diagnosed with WPW, the chances of atrial fibrillation going into ventricular fibrillation is very low. Of course, if one has a fast heart rate for a long time, one can develop CHF and then possibly VF, but not because of the AF. Rate control prevents CHF or retards its development. ...Read more

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How do antiarrythmic drugs help in the treatment of ventricular fibrillation?

How do antiarrythmic drugs help in the treatment of ventricular fibrillation?

Channel Poisons.: All antiarrhythmic medications are targeted at the channels that allow sodium, potassium, and calcium into and out of cardiac muscles, myocytes. They target certain channels at a cellular level to slow or break the abnormal rhythm. They often do nothing to fix or correct the problem. ...Read more

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What is the antiarrythmic drug of choice for paroxysmal Afib started before 1yr in 72yr male hypertensive with mild left ventricular hyper trophy ?

A-fib drugs: There are options for treating atrial fibrillation. 1) Use beta blockers &/or calcium blockers to control the heart rate, but this does not prevent a-fib episodes. 2) Anti-arrhythmic drugs vary in effectiveness and side effects: amiodarone, sotalol, flecainide, and dofetilide are used. 3) An ablation procedure is another strategy. Get a consult on HealthTap to look at your particular case! ...Read more