| Recruiting | Prospective Cohort Study of Bachmann Bundle Versus Right Atrial Appendage Pacing: Impact on Atrial Cardiomyopa NCT07360067 | Samsung Medical Center | — |
| Not Yet Recruiting | PACE-AF: Prospective Analysis of Cardiac Electrostimulation and Atrial Fibrillation NCT07279207 | Ilya Lukin | — |
| Recruiting | Left Bundle Branch Versus Minimized Ventricular Pacing in Patients With Sick Sinus Syndrome and Prolonged AV I NCT07314008 | Asan Medical Center | N/A |
| Recruiting | Evaluating the Safety and Effectiveness of 5G Cloud Follow-up for Cardiovascular Implantable Electronic Device NCT06652750 | The Third People's Hospital of Chengdu | N/A |
| Recruiting | Cardioneuroablation for Bradyarrhythmia NCT06288633 | Federal State Budgetary Institution, V. A. Almazov Federal North-West Medical Research Centre, of the Ministry of Health | N/A |
| Completed | Atrial Synchrony Evaluation of Bachmann Bundle Pacing in Sick Sinus Syndrome NCT07055035 | Shiyan City Renmin Hospital | N/A |
| Unknown | Pulmonary Artery Pressure and Right Heart Evaluation for Patients Requiring Physiological Pacing Treatment NCT05575557 | Shanghai 10th People's Hospital | N/A |
| Enrolling By Invitation | Taiwan Registry for Leadless Pacemaker NCT04926792 | National Taiwan University Hospital | — |
| Unknown | Cardioneuroablation Versus Pacemaker Implantation for the Treatment of Symptomatic Sinus Node Dysfunction NCT05186220 | Hospital Clinico Universitario de Santiago | N/A |
| Completed | Effect of Paced HR on Central BP NCT07078487 | University of Tartu | N/A |
| Unknown | Cardiac Ganglionated Plexus Ablation Before Permanent Pacemaker Implantation in Patients With Sick Sinus Syndr NCT04149886 | China National Center for Cardiovascular Diseases | N/A |
| Completed | Evaluation of Ventricular Pacing Suppression Algorithms in Dual Chamber Pacemaker NCT03843242 | Keimyung University Dongsan Medical Center | N/A |
| Completed | HBP Device EGM Data Collection NCT03564860 | Abbott Medical Devices | — |
| Completed | Second Study on Cardio-neuromodulation in Humans NCT02954666 | Imelda Hospital, Bonheiden | N/A |
| Completed | Perioperative Antibiotic Therapy to Prevent Cardiac Implantable Electronic Device Infections. NCT02809131 | Vanderbilt University Medical Center | Phase 3 |
| Unknown | Left Ventricular Pacing to Prevent Iatrogenic TR Pilot Study NCT02314897 | National University Hospital, Singapore | N/A |
| Completed | Right Ventricle (RV) Markers of Future Pacing Induced Ventricular Dysfunction - Pilot NCT02198781 | Mid and South Essex NHS Foundation Trust | — |
| Completed | Increasing Atrial Base Rate Pacing to Reduce Atrial Fibrillation NCT02317068 | Urmia University of Medical Sciences | Phase 3 |
| Completed | AV Delay Optimization vs. Intrinsic Conduction in Pacemaker Patients With Long PR Intervals NCT02154750 | University of California, San Diego | N/A |
| Unknown | Zero-fluoroscopic Navigation Versus Conventional Fluoroscopic Navigation for Single-chamber Pacemaker Implanta NCT03118440 | Tongji Hospital | N/A |
| Terminated | Impact of Septal Vs Apical Pacing on Right and Left Ventricular Performance NCT01798043 | Abbott Medical Devices | N/A |
| Unknown | Zero-fluoroscopic Navigation Versus Conventional Fluoroscopic Navigation for Double-chamber Pacemaker Implanta NCT03118427 | Tongji Hospital | N/A |
| Completed | Left Ventricular Septum Pacing in Patients by Transvenous Approach Through the Inter-ventricular Septum NCT01609738 | Maastricht University Medical Center | — |
| Unknown | Right Ventricular Lead Placement in a Pacemaker Population: Evaluation of Apical and Alternative Position NCT01647490 | Ospedale Santa Maria di Loreto Mare | N/A |
| Completed | Ventricular Pace Suppression Versus Intrinsic Rhythm Support Study NCT01528657 | Biotronik SE & Co. KG | N/A |
| Unknown | RV Septal Versus Minimized RV Pacing in Sick Sinus Syndrome NCT01477138 | Klinikum Nürnberg | — |
| Unknown | The Role of Angiotensinogen Gene Polymorphism in the Pathogenesis of Non-familial Sick Sinus Syndrome NCT01310920 | China Medical University Hospital | — |
| Terminated | Optimal Sensing in Atrial Tachyarrhythmia's Study NCT01074749 | Abbott Medical Devices | N/A |
| Withdrawn | Left Ventricular Pacing to Avoid Cardiac Enlargement Study NCT01302717 | Seoul National University Hospital | N/A |
| Completed | Medtronic Genetic Arrhythmia Markers for Early Detection (GAME Study) NCT00664807 | Medtronic Corporate Technologies and New Ventures | — |
| Completed | Imaging Cardiac Electrical Remodeling With Electrocardiogram Imaging (ECGI) NCT00785564 | Washington University School of Medicine | — |
| Terminated | Virtual Clinic Pacemaker Follow-up NCT00475124 | Biotronik SE & Co. KG | Phase 4 |
| Completed | DISCOVERY: Diagnostic Data and Genetic Polymorphisms in ICD Patients. NCT00478933 | Medtronic Cardiac Rhythm and Heart Failure | N/A |
| Completed | Beluga - Clinical Observations of Automatic Algorithms for Cardiac Pacing NCT00286858 | Boston Scientific Corporation | — |
| Completed | Prospective Registry of Pacemaker Patients Concerning Percentage of Right Ventricular Pacing, LVEF and NYHA Cl NCT00292539 | Guidant Corporation | — |
| Unknown | Mode Evaluation in Sick Sinus Syndrome Trial (MODEST) NCT00161551 | Medtronic BRC | Phase 4 |
| Unknown | Arrhythmia Restart Prevention and RatE STabilization in Atrial Fibrillation NCT00224341 | Vitatron France | Phase 4 |
| Completed | Austria Study - Analysis of Difference Between Active and Passive Fixation Leads NCT00180557 | Guidant Corporation | Phase 4 |
| Unknown | Left Ventricular Function and Remodelling During Permanent Pacing NCT00228241 | Aarhus University Hospital Skejby | N/A |
| Completed | SAVEPACe - Search AV Extension and Managed Ventricular Pacing for Promoting Atrio-Ventricular Conduction NCT00284830 | Medtronic Cardiac Rhythm and Heart Failure | N/A |
| Completed | The Atrial High Rate Episodes in Pacemaker Patients NCT00627328 | Medtronic Cardiac Rhythm and Heart Failure | — |
| Completed | Pacing of the Atria in Sick Sinus Syndrome Trial Preventive Strategies for Atrial Fibrillation NCT00161538 | Medtronic BRC | Phase 4 |
| Terminated | The Danish Multicenter Randomised Study on AAI Versus DDD Pacing in Sick Sinus Syndrome NCT00236158 | The DANPACE Investigator Group | Phase 2 / Phase 3 |
| Completed | Mode Selection Trial in Sinus Node Dysfunction (MOST) NCT00000561 | Mt. Sinai Medical Center, Miami | Phase 3 |