RF Ablation of Atrial Fibrillation

Exclusion Criteria

• •1. Any previous ablation of the left atrium (surgical or catheter based).
• •2. Permanent or persistent atrial fibrillation.
• •3. Recent myocardial infarction within 2 months
• •4. Currently unstable angina.
• •5. Any cardiac surgery during the previous 3 months.
• •6. Currently documented intracardiac thrombus by transesophageal echocardiography (TEE).
• •7. A left atrium \> 50mm in major dimension.
• •8. A common ostium larger than 25 mm in major axis or any individual pulmonary vein larger than 25 mm in major axis.
• •9. Permanent leads in or through the right atrium.
• •10. Clinically significant valvular heart disease or a replacement heart valve.
• •11. Congestive heart failure (NYHA classification III or IV).
• •12. An ejection fraction \<35%.
• •13. A contraindication to warfarin.
• •14. A contraindication to transseptal procedure.
• •15. Any cerebral ischemic event, including any transient ischemic attack (TIA), in the preceding 6 months.
• •16. Any known bleeding disorder.
• •17. Women who are known to be pregnant or nursing.
• •18. Uncontrolled hyperthyroidism.
• •19. Patients currently enrolled in any other clinical investigation.
• •20. Any other significant uncontrolled or unstable medical condition.
• •21. A life expectancy of less than one year.
• •22. Currently taking amiodarone or have taken amiodarone within 4 months prior to baseline evaluation.