Asthma is associated with higher recurrence rates of atrial fibrillation after catheter ablation.

Background: Asthma is a known risk factor for atrial fibrillation (AF), the most common sustained arrhythmia. Whereas radiofrequency catheter ablation is effective in treating AF, the impact of asthma and its severity on ablation outcomes has not been previously explored.

Objective: The purpose of this study was to evaluate the impact of asthma and its severity on AF recurrence after ablation.