Conventional Versus RF Needle Transseptal Puncture for Cryoballoon Ablation

Inclusion Criteria: * Non-permanent AF documented on a 12 lead ECG, Trans Telephonic Monitoring (TTM) or Holter monitor within the last 24 months * Age of 18 years or older on the date of consent * Candidate for ablation based on AF that is symptomatic * Informed Consent Exclusion Criteria: * Previous left atrial (LA) ablation or LA surgery * AF due to reversible cause (e.g. hyperthyroidism, cardiothoracic surgery) * Active Intracardiac Thrombus * Pre-existing pulmonary vein stenosis or PV stent * Pre-existing hemidiaphragmatic paralysis * Contraindication to anticoagulation or radiocontrast materials * Left atrial anteroposterior diameter greater than 5.5 cm by transthoracic echocardiography * Cardiac valve prosthesis * Clinically significant (moderately-severe, or severe) mitral valve regurgitation or stenosis * Myocardial infarction, PCI / PTCA, or coronary artery stenting during the 3-month period preceding the consent date * Cardiac surgery during the three-month interval preceding the consent date * Significant congenital heart defect (including atrial septal defects or PV abnormalities but not including PFO) * NYHA class III or IV congestive heart failure * Left ventricular ejection fraction (LVEF) less than 35% * Hypertrophic cardiomyopathy (septal or posterior wall thickness \>1.5 cm) * Significant Chronic Kidney Disease (CKD - eGFR \<30 µMol/L) * Uncontrolled hyperthyroidism * Cerebral ischemic event (strokes or TIAs) during the six-month interval preceding the consent date * Pregnancy * Life expectancy less than one (1) year * Currently participating or anticipated to participate in any other clinical trial of a drug, device or biologic that has the potential to interfere with the results of this study * Unwilling or unable to comply fully with study procedures and follow-up