The Living Guidelines: Maintenance of sinus rhythm: Suggest Revisions to the CLASS IIa Guidelines

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Class IIa Guidelines

 * 1) Pharmacological therapy can be useful in patients with AF to maintain sinus rhythm and prevent tachycardia induced cardiomyopathy. (Level of Evidence: C)
 * 2) Infrequent, well-tolerated recurrence of AF is reasonable as a successful outcome of antiarrhythmic drug therapy. (Level of Evidence: C)
 * 3) Outpatient initiation of antiarrhythmic drug therapy is reasonable in patients with AF who have no associated heart disease when the agent is well tolerated. (Level of Evidence: C)
 * 4) In patients with lone AF without structural heart disease, initiation of propafenone or flecainide can be beneficial on an outpatient basis in patients with paroxysmal AF who are in sinus rhythm at the time of drug initiation. (Level of Evidence: B)
 * 5) Sotalol can be beneficial in outpatients in sinus rhythm with little or no heart disease, prone to paroxysmal AF, if the baseline uncorrected QT interval is less than 460 ms, serum electrolytes are normal, and risk factors associated with class III drug–related pro-arrhythmia are not present. (Level of Evidence: C)
 * 6) Catheter ablation is a reasonable alternative to pharmacological therapy to prevent recurrent AF in symptomatic patients with little or no LA enlargement. (Level of Evidence: C)