Effect of Oral Appliance Therapy on Atrial Fibrillation

Inclusion Criteria: * Pre-qualified for ablation AF intervention * AF \> 1 documented episode in a 24-hour electrocardiogram (ECG) Holter examination or implanted AF monitor in the previous 1 month prior to study enrollment; \[AF episode defined as at least 12 hours duration\] * At least 8 teeth per arch to support OA device * Use of continuous positive air pressure (CPAP)therapy and willingness to switch to OA use * Willing and able to provide verbal and written informed consent * Ability to understand how to apply and utilize the sleep recorder and the OA device Exclusion Criteria: * Patients with implantable cardiac rhythm device \[pacemakers or internal cardiac device (ICDs)\] or cardiopulmonary disease \[heart failure, Chronic obstructive pulmonary disease (COPD), ventricular dysrhythmia\] * Unable or unwilling to complete the study demands and schedule * Comorbidities of other sleep disorders other than OSA * No active temporomandibular joint disorders (TMD) or jaw muscle pain, or morphological airway abnormalities * Pre-existing difficulty swallowing; throat or neck related health issues; endocrine dysfunction; severe psychiatric and neurological disorders; intellectually disabled; handicaps limiting sleep position * Previous OA therapy or restrictions in jaw opening * Prior ablation of AF, myocardial infarction (MI), stroke or decompensation of heart failure within the last six months, untreated overt hyper- or hypothyroidism * Commencement of new anti-arrhythmic d…