Patient Population:
A retrospective chart analysis was performed for all patients with a known diagnosis of paroxysmal AF undergoing CBA as a first or repeat procedure between the dates of January 2015 and April 2018. The study population was following at the Reliant Medical Group Cardiology Clinic at Saint Vincent Hospital in Worcester, Massachusetts. Prior to chart review and data collection, the study protocol was approved by the institutional review boards at both the Reliant Medical Group and Saint Vincent Hospital. Patients over the age of 18 with a diagnosis of paroxysmal AF were selected for review while those with a diagnosis of persistent or permanent AF were excluded. Based on our initial screening, 103 patients met the study inclusion criteria. We subsequently excluded 23 patients who did not undergo cardiac computed tomography (cCT) imaging prior to the procedure or, due to technical issues, images could not be retrieved from the radiology archives. The final analysis included 80 patients who underwent a detailed chart review for baseline demographics, underlying comorbidities, medication use and CBA procedural data. In addition, analysis with measurements of the PV anatomy on cCT was performed for all patients.