A Single Arm Pilot Study of Pulsed Field Ablation in the Treatment of Paroxysmal Atrial Fibrillation

Inclusion Criteria:Study subjects are required to meet all the following inclusion criteria to participate in this study: 1. Patients with documented drug resistant symptomatic PAF 2. Patients who are ≥ 18 and ≤ 75 years of age on the day of enrollment. 3. Patient participation requirements: 1. Lives locally. 2. Is willing and capable of providing Informed Consent to undergo study procedures. 3. Is willing to participate in all examinations and follow-up visits and tests associated with this clinical study. Exclusion Criteria: Subjects will be excluded from participating in this study if they meet any one of the following exclusion criteria: 1. AF that is: 1. Persistent 2. Secondary to electrolyte imbalance, thyroid disease, alcohol abuse or other reversible / non-cardiac causes 3. Longstanding 2. Left atrial anteroposterior diameter ≥ 5.0 cm as documented by transthoracic echocardiography (TTE) or computed tomography (CT) 3. Any of the following cardiac procedures, implants or conditions: 1. Clinically significant arrhythmias other than AF, AFL or AT 2. Previous endocardial or epicardial ablation or surgery for AF 3. Hemodynamically significant valvular disease 4. Prosthetic heart valve 5. Heart Failure for example NYHA Class III or IV CHF, LVEF \<40%, Heart failure hospitalization 6. Atrial or ventricular septal defect closure 7. Atrial myxoma 8. Left atrial thrombus 9. Left atrial appendage device or occlusion 10. Pacemaker, implantable cardioverter defibrillator or cardiac resynchronization therapy devices 11. Significant or symptomatic hypotension 12. Bradycardia or chronotropic incompetence 13. History of pericarditis 14. History of rheumatic fever 15. History of congenital heart disease with any residual anatomic or conduction abnormality 16. Any pulmonary vein abnormality, stenosis or stenting 4. Any of the following cardiovascular procedures, implants, or conditions: a. Within the 3 months preceding enrollment: i. Myocardial infarction ii. Unstable angina iii. Percutaneous coronary intervention iv. Treatment with amiodarone b. Within the 6 months preceding enrollment: i. Heart surgery ii. Stroke or TIA iii. Any thromboembolic event iv. Carotid stenting or endarterectomy v. Pericarditis or pericardial effusion c. Within the 12 months following enrollment: i. Any likelihood of cardiac surgery or transplant 5. History of blood clotting or bleeding abnormalities. 6. Contraindication to, or unwillingness to use, systemic anticoagulation 7. Contraindications to both CT and MRI 8. Sensitivity to contrast media not controlled by premedication 9. Women of childbearing potential who are pregnant, lactating, not using birth control or planning to become pregnant during the anticipated study period 10. Medical conditions that would prevent participation in the study, interfere with assessment or therapy, significantly raise the risk of study participation, or confound data or its interpretation, including but not limited to 1. Body mass index (BMI) \> 40 2. Solid organ or hematologic transplant, or currently being evaluated for an organ transplant 3. Severe lung disease, pulmonary hypertension, or any lung disease involving abnormal blood gases or significant dyspnea 4. Renal insufficiency with an estimated creatinine clearance \< 30 mL/min/1.73 m2, or any history of renal dialysis or renal transplant 5. Active malignancy or history of treated cancer within 24 months of enrollment 6. Clinically significant gastrointestinal problems involving the esophagus, stomach and/or untreated acid reflux 7. Clinically significant infection 8. Predicted life expectancy less than one year 11. Clinically significant psychological condition that in the investigator's opinion would prohibit the subject's ability to meet the protocol requirements 12. Current or anticipated enrollment in any other clinical study