What are the 4 classes of antiarrhythmic drugs?

Antiarrhythmic drug classes:
  • Class I – Sodium-channel blockers.
  • Class II – Beta-blockers.
  • Class III – Potassium-channel blockers.
  • Class IV – Calcium-channel blockers.
  • Miscellaneous – adenosine. – electrolyte supplement (magnesium and potassium salts) – digitalis compounds (cardiac glycosides)

What are 5 classes of antiarrhythmic drugs?

Overview
  • Class 1: sodium channel blockers. …
  • Class 2: beta-blockers. …
  • Class 3: potassium. …
  • Class 4: calcium channel blockers. …
  • Class 5: miscellaneous agents that cannot be categorized into the above groups.

What is the name of the classification system antiarrhythmics?

The antiarrhythmic medications have typically been categorized according to the Vaughan-Williams (VW) classification system. The system classifies the medications according to the primary mechanism of action (although several agents retain properties from multiple classes).

How many classes of anti arrhythmic drugs are there?

What are the classes of antiarrhythmic medications? There are four classes of antiarrhythmics, based on the Vaughan-Williams (VW) classification system: Class I, sodium channel blockers: These drugs prevent sodium from getting through cell membranes. This can slow electrical impulses in the heart muscle.

What do Class 4 antiarrhythmics do?

WHAT ARE CLASS IV ANTIDYSRHYTHMICS AND HOW DO THEY WORK? Antidysrhythmics, also known as antiarrhythmics, are drugs used to prevent abnormal cardiac rhythms such as atrial fibrillation, atrial flutter, ventricular tachycardia, and ventricular fibrillation.

What are Class 3 antiarrhythmic drugs?

Class 3 antiarrhythmics are drugs that block cardiac tissue K channels Channels The Cell: Cell Membrane . The medications in this class include amiodarone.
…
Medications within this drug class
  • Amiodarone. …
  • Dronedarone.
  • Sotalol.
  • Ibutilide.
  • Dofetilide.
  • Bretylium.

What are the most common antiarrhythmic drugs?

The most common medications in this class are:
  • amiodarone (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)

What are Class 1 antiarrhythmics used for?

Quinidine, disopyramide, procainamide, lidocaine, mexiletine, flecainide, and propafenone are all class I antiarrhythmic drugs (table 1) used for the treatment of various atrial and ventricular arrhythmias.

What is the best antiarrhythmic drug?

Amiodarone, dofetilide, dronedarone, and sotalol are class III agents, potassium channel blockers that lead to prolongation of QT interval and possible ventricular arrhythmias or torsades de pointes. Amiodarone is considered the most potent antiarrhythmic agent.

What are the most common antiarrhythmic drugs?

The most common medications in this class are:
  • amiodarone (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)

What is the best antiarrhythmic drug?

Amiodarone, dofetilide, dronedarone, and sotalol are class III agents, potassium channel blockers that lead to prolongation of QT interval and possible ventricular arrhythmias or torsades de pointes. Amiodarone is considered the most potent antiarrhythmic agent.

What is the best drug for arrhythmia?

Beta blockers may stop the arrhythmia occurring but, more often, are useful for slowing down the heart rate during the arrhythmia without actually terminating it. Calcium channel blockers such as verapamil and diltiazem work in a similar way. Digoxin is also commonly prescribed for AF to help control the rate.

How do you remember antiarrhythmic drugs?

Mnemonic. To recall all class I antiarrhythmic medications, think of ordering a burger at a restaurant: “Double Quarter Pounder with Lettuce, Mayo, Pickles, and Fries, Please!”

Which beta blocker is best for arrhythmia?

Arrhythmias: bisoprolol and metoprolol succinate are often preferred. Beta-blockers are the first-line treatment for long-term symptomatic rate control in patients with a range of cardiac arrhythmias, including atrial fibrillation and ventricular tachycardia.

What is the first drug of choice for atrial fibrillation?

Amiodarone as a first-choice drug for restoring sinus rhythm in patients with atrial fibrillation: a randomized, controlled study.