Heart rhythm mystery: 750-Patient study targets AF recurrence after ablation

This study follows 750 people with atrial fibrillation (an irregular heartbeat) who are getting a procedure called catheter ablation. The main goal is to learn why the heart rhythm problem returns in up to 45% of patients within a year after the procedure. Researchers will track patients for 3 years, using medical history and special blood tests to find clues. The study does not test a new treatment but aims to improve future care by understanding what leads to recurrence.