The Field PULSE Study

Prior treatment

• Previous endocardial/epicardial ablation or surgery for AF.

Other illness

• AF secondary to electrolyte imbalance, thyroid disease, alcohol abuse or other reversible/non-cardiac causes.
• History of hemodynamically severe valvular disease. Severity should be assessed using echocardiography, according to AHA and European guidelines.
• Uncontrolled abnormal bleeding and/or clotting disorder.
• Serious or untreated medical conditions that would prevent participation in the study, interfere with assessment of therapy, or confound data or its interpretation, including but not limited to solid organ or hematologic transplant, or currently being evaluated for an organ transplant.
• History of severe lung disease, pulmonary hypertension, or any lung disease involving abnormal blood gases or significant dyspnea which may interfere with the assessment of the therapy.
• Active malignancy.
• Uncontrolled clinically significant infection.
• Clinically significant psychological condition that in the investigator's opinion would prohibit the subject's ability to meet the study requirements.
• Any of the following within 3 months of enrollment: myocardial infarction, unstable angina, percutaneous coronary intervention, heart surgery (coronary artery bypass grafting/atriotomy), stroke or transient ischemic attack (TIA);

Age

• Women who are of childbearing age and not on a reliable form of birth control.

Other

• Body Mass Index \> 40.
• Ineligible for ablation (including but not limited to known left atrial thrombus).
• NYHA Class IV.
• Left atrial appendage device or occlusion within 180 days.
• Atrial or ventricular septal defect closure.
• Atrial myxoma.
• The presence of inferior vena cava embolic protection filter devices.
• Significant or symptomatic untreated hypotension, bradycardia, or chronotropic incompetence.
• Diagnosis of pacemaker dependance.
• Contraindication to systemic or oral anticoagulation.
• Life expectancy is less than one year.
• Participation in another investigational study that would interfere with this study.
• Patient is not able to understand the nature of this study or is unwilling or unable to attend the study procedures.

• Signed patient informed consent form (ICF).
• Female and male patients aged ≥ 18 and ≤ 80.
• Documented atrial fibrillation via an electrocardiogram (must be at least 30 seconds) within one year of enrollment.
• Indicated for a first-time catheter ablation for atrial fibrillation or associated atrial arrhythmias (European guidelines).