Quick Answer: What Are The 4 Classes Of Antiarrhythmic Drugs?

What are most widely used class of antiarrhythmics?

quinidineClass IA drugs (quinidine, disopyramide and procainamide) These drugs of which quinidine is the most widely used, have very similar electrophysiological properties both in vitro and vivo..

Are beta blockers antiarrhythmics?

Class II antiarrhythmic medicines are beta-blockers, which work by blocking the impulses that may cause an irregular heart rhythm and by interfering with hormonal influences (such as adrenaline) on the heart’s cells. By doing this, they also reduce blood pressure and heart rate.

What is the most serious type of heart arrhythmia?

The most serious arrhythmia is ventricular fibrillation, which is an uncontrolled, irregular beat. Instead of one misplaced beat from the ventricles, you may have several impulses that begin at the same time from different locations—all telling the heart to beat.

What vitamins are good for heart arrhythmia?

Potential supplements that may have antiarrhythmic activity include omega-3 polyunsaturated fatty acids (N-3 PUFA), coenzyme Q10, and carnitine. Clinical studies show that N-3 PUFA or fish oil supplementation appears to reduce mortality and sudden death.

What is the safest antiarrhythmic drug?

Of all antiarrhythmic agents, dofetilide and amiodarone have been proven safe in patients with heart failure.

What is the drug of choice for atrial fibrillation?

Drug choices for rate control include beta-blockers, verapamil and diltiazem, and digitalis as first-line agents, with consideration of other sympatholytics, amiodarone, or nonpharmacologic approaches in resistant cases.

What is a class 3 antiarrhythmic?

A class III antiarrhythmic drug used for the maintenance of normal sinus rhythm and cardioversion in cases of atrial fibrillation and atrial flutter. Ibutilide. A class III antiarrhythmic agent used to correct atrial fibrillation and atrial flutter, which can be considered as an alternative to cardioversion. Amiodarone.

Which drug is considered a Class 1a antiarrhythmic drug?

Ia -Quinidine, procainamide, disopyramide (depress phase 0, prolonging repolarization) Ib -Lidocaine, phenytoin, mexiletine (depress phase 0 selectively in abnormal/ischemic tissue, shorten repolarization) Ic -Flecainide, propafenone, moricizine (markedly depress phase 0, minimal effect on repolarization)

Which drugs slow or inhibit AV node?

These medications include the following:Adenosine (first line)Calcium channel blockers (eg, diltiazem, verapamil)Beta-blockers (eg, esmolol, propranolol, metoprolol, atenolol)Digitalis.

Can you feel heart arrhythmia?

Heart rhythm problems (heart arrhythmias) occur when the electrical impulses that coordinate your heartbeats don’t work properly, causing your heart to beat too fast, too slow or irregularly. Heart arrhythmias (uh-RITH-me-uhs) may feel like a fluttering or racing heart and may be harmless.

How many classes of antiarrhythmic drugs are there?

Most antiarrhythmic drugs are grouped into 4 main classes (Vaughan Williams classification) based on their dominant cellular electrophysiologic effect (see table Antiarrhythmic Drugs (Vaughan Williams Classification)).

What is a Class 1c drug?

Flecainide, encainide, and propafenone belong to class IC antiarrhythmic drugs. They are new and potent drugs which markedly depress Phase 0 of the action potential without affecting repolarization.

How do you memorize antiarrhythmic drugs?

Mnemonic: Double Quarter Pounder, Lettuce Mayo, Fries PleaseClass IA = Disopyramide, Quinidine, and Procainamide.Class IB = Lidocaine and Mexiletine.Class IC = Flecainide and Propafenone.

What are the classes of Antidysrhythmic drugs?

OverviewClasses of antiarrhythmic drugs [1]ClassExamplesClass II antiarrhythmic drugsMetoprolol Esmolol Propranolol Atenolol Timolol Carvedilol SotalolClass III antiarrhythmic drugsAmiodarone Dronedarone Sotalol Bretylium Ibutilide DofetilideClass IV antiarrhythmic drugsVerapamil Diltiazem Nifedipine4 more rows•Sep 28, 2020

What are the names of antiarrhythmic drugs?

Antiarrhythmic drugsamiodarone (Cordarone, Pacerone)flecainide (Tambocor)ibutilide (Corvert), which can only be given through IV.lidocaine (Xylocaine), which can only be given through IV.procainamide (Procan, Procanbid)propafenone (Rythmol)quinidine (many brand names)tocainide (Tonocarid)