Persistent Atrial Fibrillation When Rate Control Has Not Achieved Target Heart Rate
Persistent AF — defined by AF episodes that are not self-terminating — requires a reassessment of strategy when rate control alone has not restored adequate heart rate targets or continues to leave the patient symptomatic.
Previous approach & failure condition
Rate control with a single agent was the first-line strategy, targeting a resting heart rate below 110 b.p.m. (lenient control), with stricter control in patients with continuing symptoms. When this heart rate goal is not met — or symptoms persist despite it — escalation to a rhythm control approach is the next clinical step.
Clinical scenario
Persistent atrial fibrillation: AF episodes that do not terminate on their own, representing a sustained arrhythmia requiring active intervention to restore and maintain sinus rhythm.
Treatment approach (partial)
The next step is a rhythm control strategy. This may involve cardioversion and/or antiarrhythmic drug therapy, with the specific agent determined by the patient's underlying cardiac status. Catheter ablation may also be an option in selected cases. The complete algorithm — including agent selection, sequencing, and patient-specific considerations — is available in the full protocol.
Clinical goals
Maintenance of sinus rhythm and reduction of AF-related symptoms.