Concomitant LAAC/AF Ablation (Watchman FLX Pro)

This sub-study is looking at patients who undergo two heart procedures at the same time: a procedure to close off a small pocket in the heart called the left atrial appendage (to reduce stroke risk) and a procedure to correct an abnormal heart rhythm called atrial fibrillation (AF ablation). The Watchman FLX Pro device is used for the closure. The study aims to understand how safe and effective this combined approach is. **You may be eligible if...** - Your cardiologist has determined you are a good candidate for a left atrial appendage closure procedure - Your closure procedure is being done at the same time as an atrial fibrillation (AF) ablation procedure - You are willing to provide extra consent for participation in this sub-study **You may NOT be eligible if...** - You do not meet the standard criteria for left atrial appendage closure - The procedures are not being done at the same time - You are not willing to consent to the additional sub-study requirements Talk to your doctor to see if this trial is right for you.