The primary objective of the TRAC-AF Registry is to capture real-world safety and effectiveness data on AtriCure devices used to conduct open concomitant and/or hybrid ablation, and management of the LAA concomitant to a cardiac ablation.

Up to 10,000 patients at up to 250 sites. Participating regions may include US, Canada, Europe, Asia Pacific and others to be determined. Registry participating sites will enroll patients that meet all inclusion criteria and no exclusion criteria without preselection or bias. Each patient will be followed for a period of up to ten (10) years after their procedure according to the standard practice at the enrolling center. There will be no additional visits, nor procedures, for subjects who participate in the registry.

Inclusion Criteria:

1. Patient has been scheduled by physician(s) to undergo or has undergone cardiac ablation procedure(s)
2. Patient is willing to provide informed consent
3. Patient whose age is 18 years or above, or of legal age to give informed consent specific to state and national law

Exclusion Criteria:

1. Other medical, social, or psychological conditions that in the opinion of the Investigator precludes the subject from appropriate consent or adherence to the protocol.

The TRAC-AF registry eligibility is open to sites and physicians performing open concomitant or hybrid ablation therapy procedures as treatments for patients diagnosed with paroxysmal, persistent or long-standing persistent atrial fibrillation using at least one of AtriCure's ablation devices. Subjects must have been scheduled to undergo or have undergone the cardiac ablation treatment and must meet all eligibility criteria in order for their treatment and results to be considered for this registry.