From the Emergency Department Directly to Ablation of Atrial Fibrillation Study

This study tests whether it's safe and effective to perform catheter ablation (a procedure that uses energy to correct the abnormal electrical signals causing atrial fibrillation) directly from the emergency department, without the usual wait for a scheduled outpatient appointment. **You may be eligible if...** - You are 18 or older - You have documented atrial fibrillation (AF) that is paroxysmal (comes and goes) or short-term persistent (episodes under 6 months) - Your AF started within the last year - You recently visited the emergency department or an outpatient clinic for AF within the past 2 weeks **You may NOT be eligible if...** - You have had AF continuously for more than 6 months - Your left atrium (a heart chamber) is very enlarged (diameter > 60mm) - You have severe mitral valve disease or have had prior mitral valve surgery - You have had a previous left heart ablation procedure - You are currently on amiodarone (a heart rhythm drug) Talk to your doctor to see if this trial is right for you.