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Atrial Fibrillation

The Therapeutic Options

  • Practical Therapeutics
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Summary

Atrial fibrillation (AF) is a common cardiac arrhythmia which is particularly prevalent among the elderly. In patients with AF of recent onset, restoration of sinus rhythm may be feasible and this can be achieved by DC cardioversion, or by the use of one of a number of drugs including amiodarone, flecainide or propafenone. Neither digoxin nor the calcium antagonists facilitate the restoration of sinus rhythm. Recurrence of AF is common after successful cardioversion and, although long term antiarrhythmic drug therapy may help to maintain sinus rhythm, all such drugs are potentially toxic and can have important proarrhythmic actions. In patients with chronic AF, restoration of sinus rhythm is rarely possible and treatment is directed towards control of the ventricular response rate, which may be achieved with digoxin and/or a rate-limiting calcium antagonist such as verapamil or diltiazem; β-blockers may also be used although they appear to impair effort tolerance. In addition, long term anticoagulation may be indicated to reduce the risks of systemic embolisation, even in patients with ‘nonrheumatic’ AF; antiplatelet drugs are of no apparent value in this context. A minority of patients present with AF associated with ventricular pre-excitation; in these individuals both digoxin and the calcium antagonists are contraindicated and the ventricular response rate should be controlled with flecainide, amiodarone or propafenone

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  1. Department of Cardiology, Pontefract General Infirmary, Friarwood Lane, Pontefract, West Yorkshire, WF8 1PL, England

    Richard V. Lewis (Consultant Cardiologist)

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Lewis, R.V. Atrial Fibrillation. Drugs 40, 841–853 (1990). https://doi.org/10.2165/00003495-199040060-00006

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