The study population consists of patients at least 18 years of age who are scheduled for AF ablation at Vanderbilt University. Data recorded at enrollment includes a detailed past medical history and measurements from pre-ablation imaging (cardiac MRI or CT). At the time of ablation, a blood sample is collected for storage of plasma/serum and extraction of DNA, and details of the ablation procedure are recorded. Post-ablation monitoring for arrhythmia recurrence is performed according to a standard clinical follow-up schedule at 3, 6, and 12-months. ECG's are performed at each follow-up visit along with placement of an ambulatory ECG-monitor. At 6-months post-ablation, cardiac imaging with a repeat cardiac MRI or CT is performed.
