What drugs can be used to achieve rate control in patients with atrial fibrillation (Afib) (AF)?

Updated: Apr 09, 2019
  • Author: Lawrence Rosenthal, MD, PhD, FACC, FHRS; Chief Editor: Jeffrey N Rottman, MD  more...
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Answer

AV nodal blocking medications are the cornerstone of rate control in long-standing AF. In the absence of an accessory pathway, oral beta-blockers, non-dihydropyridine calcium channel blockers, and digoxin are effective. Generally, coadministration of beta-blockers and calcium channel blockers is reserved for patients in whom adequate rate control cannot be achieved with a single agent.

Digoxin can be effective in sedentary patients (especially in those with heart failure) but requires close monitoring of drug levels, serum electrolytes (potassium, magnesium), and renal function. Combinations of rate-control medications (eg, beta-blocker and digoxin) may be superior to individual agents in some patients.

Amiodarone may contribute to ventricular rate control. However, antiarrhythmic agents may organize AF to a potentially life-threatening atrial flutter with 1:1 AV conduction. Particularly with class IC agents, maintenance of effective AV nodal rate control is essential in most patients. Therefore, administration of a beta-blocker or calcium channel blocker is recommended before class IC drugs are initiated.

In the presence of tachycardia-mediated cardiomyopathy or inadequate ventricular rate control despite drug therapy, AV nodal ablation and permanent pacemaker implantation may be considered.


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