Optimized Ablation of the Posterior Wall in Persistent Atrial Fibrillation

This study is comparing two approaches to a heart procedure called catheter ablation for persistent atrial fibrillation (AFib) — an irregular heart rhythm that lasts more than 7 days. The study tests whether treating an additional area of the heart (the posterior wall) during ablation improves outcomes. **You may be eligible if...** - You are 18 years or older - You have persistent AFib (episodes lasting at least 7 days but no more than 3 years) - This would be your first ablation procedure for AFib - Your AFib causes symptoms and hasn't responded well to medications **You may NOT be eligible if...** - You have had a previous ablation for AFib - You have a blood clot in your heart (left atrial appendage) - You have significant structural heart disease or advanced heart failure - You have had a recent heart attack or major heart surgery Talk to your doctor to see if this trial is right for you.