NAVISTAR® THERMOCOOL® Catheter for the Radiofrequency Ablation of Symptomatic Paroxysmal Atrial Fibrillation- Treatment Use Study

Inclusion Criteria: * Patients with symptomatic PAF who have had three (3) AF episodes in the six (6) months prior to enrollment, one of which must be documented. Documentation may include electrocardiogram (ECG), transtelephonic monitor (TTM), Holter monitor (HM), or telemetry strip. * Failure of at least one AAD for PAF \[class I or III or AV nodal blocking agents such as beta blockers (BB) and calcium channel blockers (CCB)\] as evidenced by recurrent symptomatic PAF, or intolerable side effects due to AAD. * Signed Patient Informed Consent Form. * Age 18 years or older. * Able and willing to comply with all pre-, post- and follow-up testing and requirements. Exclusion Criteria: * Atrial fibrillation secondary to electrolyte imbalance, thyroid disease, or reversible or non- cardiac cause. * Previous ablation for atrial fibrillation. * Patients on amiodarone therapy at any time during the previous six (6) months. * AF episodes that last longer than 30 days and are terminated via cardioversion. * Any valvular cardiac surgical procedure. * CABG procedure within the last 180 days (six months). * Awaiting cardiac transplantation or other cardiac surgery within the next 360 days (12 months). * Documented left atrial thrombus on imaging (e.g. TEE). * History of a documented thromboembolic event within the past one (1) year. * Diagnosed atrial myxoma. * Presence of implanted ICD. * Significant pulmonary disease, (e.g. restrictive pulmonary disease, constrictive or chronic obstr…