The Living Guidelines: Pharmacological rate control during atrial fibrillation Suggest Revisions to the CLASS IIb Guidelines

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Class IIb Guidelines
1. When the ventricular rate cannot be adequately controlled both at rest and during exercise in patients with AF using a [beta blocker]], non dihydropyridine calcium channel antagonist, or digoxin, alone or in combination, oral amiodarone may be administered to control the heart rate. (Level of Evidence: C)

2. Intravenous procainamide, disopyramide, ibutilide, or amiodarone may be considered for hemodynamically stable patients with AF involving conduction over an accessory pathway. (Level of Evidence: B)

3. When the rate cannot be controlled with pharmacological agents or tachycardia-mediated cardiomyopathy is suspected, catheter-directed ablation of the AV node may be considered in patients with AF to control the heart rate. (Level of Evidence: C)