| Not Yet Recruiting | Relaxin Therapy for Atrial Fibrillation NCT07359872 | Deeptankar DeMazumder | Phase 1 / Phase 2 |
| Not Yet Recruiting | Catheter Ablation Plus LAAO Versus Anticoagulation in Frail Elderly Patients With Atrial Fibrillation NCT07441382 | Guangdong Provincial People's Hospital | N/A |
| Not Yet Recruiting | PROMBot-HSM-FA: Protocol for a Feasibility Study of a Chatbot Platform to Collect Patient-reported Outcomes Af NCT07237178 | Ana Rita Londral, PhD | N/A |
| Recruiting | Substrate Remodelling and Targeted Ablation in AF NCT07047235 | Barts & The London NHS Trust | N/A |
| Not Yet Recruiting | Randomized Controlled Trial- Ablation Strategy for Paroxysmal Atrial Fibrillation - Trigger and Substrate Guid NCT04823299 | Ottawa Heart Institute Research Corporation | N/A |
| Recruiting | Effects of Music During Atrial Fibrillation Ablation Under Conscious Sedation NCT06953752 | Shaoxing People's Hospital | N/A |
| Not Yet Recruiting | Empiric Pulsed Field Pulmonary Vein Isolation During Atrial Tachycardia Ablation in Adults With Congenital Hea NCT06969378 | Boston Children's Hospital | N/A |
| Recruiting | Lattice-tip Versus Irrigated-tip Catheter for Linear Ablation of the Cavotricuspid Isthmus. A Multicenter, Ran NCT07078760 | Mitera Hospital | N/A |
| Recruiting | Efficacy and Safety of Catheter abLation in patiEnts With seVere mitrAl regurgiTation and pErsistent Atrial Fi NCT06883864 | Beijing Anzhen Hospital | N/A |
| Completed | PulseSelect Based Pulmonary Vein Isolation and Ablation in Patients With Atrial Fibrillation NCT07035288 | Tsiachris Dimitrios | N/A |
| Recruiting | Cavo-Tricuspid Isthmus Block Durability After Pulsed Electric Field Ablation NCT06691074 | Institute for Clinical and Experimental Medicine | N/A |
| Recruiting | Preventive Catheter Ablation for Ventricular arrhythmiaS in Patients With End-sTage Heart faiLure NCT06556485 | Heart and Diabetes Center North-Rhine Westfalia | N/A |
| Recruiting | Investigation of Cardioversion Versus Therapeutic Ablation for Persistent AF (ORBICA-AF) NCT06096246 | Barts & The London NHS Trust | N/A |
| Unknown | Ganglion Plexus Ablation in Persistent Atrial Fibrillation NCT06181578 | Ning Zhou | N/A |
| Active Not Recruiting | Effect of Dapagliflozin on the Recurrence of Atrial Tachyarrhythmia in Patients Undergoing Catheter Ablation o NCT06111443 | Chang Gung Memorial Hospital | Phase 2 / Phase 3 |
| Completed | Inflammatory Response Following " Pulsed Field Ablation " vs. Radiofrequency Ablation-2 NCT06160076 | University Hospital, Bordeaux | — |
| Active Not Recruiting | Persistent Atrial Fibrillation Without the Evidence of Low-voltage Areas NCT06124690 | Robert Bosch Medical Center | N/A |
| Unknown | Prognostic Factors for Ablation of Atrial Fibrillation NCT05716581 | Charles University, Czech Republic | — |
| Recruiting | AF Ablation With High Power Short Duration RF NCT05777551 | Clinica Mediterranea | — |
| Unknown | High-Power Short-Duration Radiofrequency Ablation in Patients With Typical Atrial Flutter NCT05777850 | Jose Luis Ibañez Criado | N/A |
| Recruiting | Outcomes of PFA Vs. RFA for Patients with PSVT: a Retrospective and Propensity Score Matching Study NCT06573853 | Caijie Shen | — |
| Unknown | Electroacupuncture Intervention in Catheter Ablation of Atrial Fibrillation NCT05575544 | Shanghai Chest Hospital | N/A |
| Unknown | Combined Study of ATrial Strain and Voltage by High Density Mapping in Young Patients With Atrial Fibrillation NCT05565183 | Assistance Publique - Hôpitaux de Paris | N/A |
| Completed | PrOgnosis Following Esophageal FisTula FormaTion in Pts Undergoing CathetER Ablation for AF Study NCT05273645 | University of Luebeck | — |
| Recruiting | Hybrid Score to Predict OTVA-SOO in Patients with Wide Basal QRS NCT06602635 | Centro Medico Teknon | — |
| Completed | AcQMap 2.1 With Electro-Magnetic Tracking System Feasibility Study (EMT Feasibility Study) NCT05181878 | Acutus Medical | — |
| Unknown | Impact of Pacing Output and Cycle Length on QRS Morphology NCT05061498 | Universitätsklinikum Köln | N/A |
| Completed | Randomized Trial: High Power Short Duration Versus Ablation Index NCT05251545 | Robert Bosch Medical Center | N/A |
| Unknown | Dapagliflozin to Prevent Atrial Fibrillation Recurrence After Transcatheter Pulmonary Venous Isolation. NCT04780438 | G.Gennimatas General Hospital | EARLY_Phase 1 |
| Completed | Comparison Between Upgraded '2C3L' vs. PVI Approach for Catheter Ablation of Persistent Atrial Fibrillation NCT04497376 | Beijing Anzhen Hospital | N/A |
| Unknown | Left Atrial Appendage Electrical Isolation in Persistent Atrial Fibrillation NCT04897204 | Xinhua Hospital, Shanghai Jiao Tong University School of Medicine | N/A |
| Completed | Post-Ablation Pericarditis Reduction Study (PAPERS) NCT06731595 | St. Vincent Cardiovascular Research Institute | Phase 2 |
| Completed | Post-Ablation Pericarditis Reduction Study NCT04906720 | St. Vincent Cardiovascular Research Institute | Phase 2 |
| Recruiting | Zero Fluoroscopy Voltage Guided vs. Linear CTI Ablation NCT04678258 | Klinikum-Fuerth | N/A |
| Active Not Recruiting | Left Atrial Posterior Wall Additional Isolation for Persistent Atrial Fibrillation Trial NCT04405258 | Institute for Clinical Effectiveness, Japan | Phase 4 |
| Terminated | Continuation of Antiarrhythmics Following Ventricular Tachycardia Catheter Ablation NCT04208997 | Vanderbilt University Medical Center | Phase 3 |
| Completed | High Radiofrequency Power for Faster and Safer Pulmonary Vein Ablation Trial (POWER FAST III) NCT04153747 | Hospital Universitario La Paz | N/A |
| Unknown | Esophageal Damage Protection During Pulmonary Vein Ablation. Pilot Study. NCT03832959 | Fundació Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau | N/A |
| Unknown | R Wave Sensing After VT Ablation NCT03779165 | University Hospital Sestre Milosrdnice | — |
| Unknown | Registry Evaluating AF Ablation Techniques NCT03695484 | Erasmus Medical Center | — |
| Completed | Low-Level EMF Stimulation for Paroxysmal Atrial Fibrillation NCT03593486 | University of Oklahoma | N/A |
| Completed | MANual vs. automatIC Local Activation Time Annotation for Guiding Premature Ventricular Complex Ablation NCT03340922 | Centro Medico Teknon | Phase 4 |
| Recruiting | Role of Endomyocardial Biopsy and Aetiology-based Treatment in Patients With Inflammatory Heart Disease in Arr NCT04521790 | Scientific Institute San Raffaele | — |
| Completed | Bladder Catheters During Ablation Procedures NCT03635034 | St. Vincent Cardiovascular Research Institute | N/A |
| Unknown | Left Atrial Function Analysis for Patients With Persistent Atrial Fibrillation Undergoing Pulmonary Vein Isola NCT03242694 | Semmelweis University Heart and Vascular Center | — |
| Completed | Pulmonary Vein Isolation in Athletes NCT03226847 | The Cleveland Clinic | N/A |
| Recruiting | Japanese Catheter Ablation Registry NCT03729232 | National Cerebral and Cardiovascular Center, Japan | — |
| Completed | Prospective Physician-Initiated Observational Study of The Contact Detection System (CDS) in Patients Undergoi NCT03103945 | Erasmus Medical Center | — |
| Completed | Use of Protamine for Heparin Reversal After Catheter Ablation of Atrial Fibrillation NCT03140631 | University of Michigan | Phase 4 |
| Completed | Catheter Ablation and Rate Control of Atrial Fibrillation in Patients With Heart Failure NCT02846922 | Nanjing Medical University | — |
| Unknown | Registry of Malignant Arrhythmias and Sudden Cardiac Death - Influence of Diagnostics and Interventions NCT02982473 | Universitätsmedizin Mannheim | — |
| Unknown | Efficacy of Pulmonary Vein Isolation Alone in Patients With Persistent Atrial Fibrillation NCT03514693 | Osaka Cardiovascular Conference | N/A |
| Completed | Vagal Response and Cardiac Autonomic Modulation. Insides From Cryoballoon Ablation NCT04896424 | Pomeranian Medical University Szczecin | N/A |
| Recruiting | Role of Endomyocardial Biopsy and Aetiology-based Treatment in Pediatric Patients with Inflammatory Heart Dise NCT06591260 | Scientific Institute San Raffaele | — |
| Terminated | Stepwise Approach To sUbstrate Modification for Ventricular Tachycardia NCT01546207 | Vivek Reddy | N/A |
| Unknown | Contact Force Sensing and Pulmonary Vein Isolation NCT01630031 | Clinique Pasteur | — |
| Completed | Benefit of Complex Fractionated Atrial Electrograms Elimination in Atrial Fibrillation Ablation NCT00873067 | Hospital Clinic of Barcelona | Phase 3 |
| Terminated | Clinical Value of Left Atrial Appendage Flow for Prediction of Successful Catheter Ablation for Persistent Atr NCT01144858 | Clinique Pasteur | — |