| Not Yet Recruiting | Relaxin Therapy for Atrial Fibrillation NCT07359872 | Deeptankar DeMazumder | Phase 1 / Phase 2 |
| Not Yet Recruiting | RHYthm and Myocardial Function Relationship Evaluation in Heart Diseases NCT07491237 | Fondazione Policlinico Universitario Agostino Gemelli IRCCS | — |
| Not Yet Recruiting | Start CPAP Therapy in Obstructive Sleep Apnea Patients After Atrial Fibrillation Ablation NCT07444372 | Beijing Anzhen Hospital | N/A |
| Not Yet Recruiting | Comprehensive Biomarker ProfiliNg in PatieNts With VEntriCular TachyCardia, PremAtuRe VEntricular Contractions NCT07389928 | University of Luebeck | — |
| Not Yet Recruiting | HeartBeam ECG Registry NCT07501299 | HeartBeam, Inc. | — |
| Not Yet Recruiting | Computed Tomography of Pulse-Field Ablation NCT07395089 | Assistance Publique - Hôpitaux de Paris | — |
| Not Yet Recruiting | Virtual Reality in Electrophysiological Procedures and Device Implantation: the VR inEP Trial NCT07105241 | Radboud University Medical Center | N/A |
| Not Yet Recruiting | Arrhythmia Cohort Study NCT07123896 | Beijing Anzhen Hospital | — |
| Recruiting | BIO|CONCEPT.BIOMONITOR-HF Collect Clinical Data From Heart Failure Patients Using BIOMONITOR Devices With a St NCT06989580 | Biotronik SE & Co. KG | N/A |
| Active Not Recruiting | Pediatric Adhesion and New Dermal Approach Study NCT07118124 | iRhythm Technologies, Inc. | N/A |
| Recruiting | Cardiac REhabilitation COhort at the Medicine Campus DaVos to invEstigate Recovery NCT07096973 | Hochgebirgsklinik Davos | — |
| Recruiting | Quality of Life Before and After Transcatheter Ablation in Children With Arrythmias NCT06808204 | Hospices Civils de Lyon | N/A |
| Withdrawn | Clinical Performance Evaluation of the Hativ P30 NCT06713226 | VUNO Inc. | N/A |
| Not Yet Recruiting | This is an Observational Study That Aims to Demonstrate Postoperative Risk Factors in Pediatric Cardiac Surger NCT06985082 | Instituto de Cardiologia do Rio Grande do Sul | — |
| Recruiting | The Safety and Efficacy of Radiofrequency Ablation After Left Atrial Appendage Occlusion. NCT06984731 | Affiliated Hospital of Nantong University | — |
| Completed | Norepinephrine ED90 Bolus After Spinal Anesthesia in Cesarean Section NCT06574555 | Pontificia Universidad Catolica de Chile | Phase 4 |
| Recruiting | Mechanisms And Prognosis of Stroke-Heart Syndrome NCT06954103 | Chensheng Pan | — |
| Not Yet Recruiting | Acute Cerebrovascular Events in Patients Undergoing Catheter Ablation NCT05694273 | First Affiliated Hospital Xi'an Jiaotong University | — |
| Not Yet Recruiting | Deep Learning for Intelligent Identification of Arrhythmias NCT05967546 | First Affiliated Hospital Xi'an Jiaotong University | — |
| Recruiting | Validation of the Accuracy of a Novel POCT Dry Electrolyte Analysis System in the Acute Care Setting NCT06726460 | Zhujiang Hospital | — |
| Recruiting | Genetic Characterization of Patients With Arrhythmia-Induced Cardiomyopathy NCT06896266 | Hospital Universitario 12 de Octubre | — |
| Recruiting | Hearables: Ear-ECG and PPG for Detection of Cardiac Arrhythmias NCT06667258 | Imperial College London | — |
| Completed | Radiation-free Anatomical Direct Imaging Approach for No-fluoroscopy Cardiac Electrode Implantation NCT07458724 | Chinese Academy of Medical Sciences, Fuwai Hospital | N/A |
| Not Yet Recruiting | NOrthwestern Tempus AI-enaBLed Electrocardiography (NOTABLE) Trial NCT06511505 | Northwestern University | N/A |
| Active Not Recruiting | Validation of Belun Ring Gen3 Deep Learning Algorithms With Subxiphoid Body Sensor NCT06255613 | Belun Technology Company Limited | N/A |
| Recruiting | Ablation of Focal Activation in Atrial Fibrillation NCT06402617 | Imperial College London | N/A |
| Recruiting | Hativ® ELectrocardiogram Monitoring on Patients With Suspected Arrhythmia NCT06250712 | Wonju Severance Christian Hospital | N/A |
| Unknown | Diagnostic Accuracy in the Detection of Arrhythmias of Patient Recorded ECGs With Smart WATCH TIMEly Performed NCT06482320 | University Hospital of Ferrara | — |
| Recruiting | Aveir AR Coverage With Evidence Development (CED) Study NCT06100770 | Abbott Medical Devices | — |
| Unknown | Arterial Embolism After Catheter Ablation of Atrial Fibrillation. ATRIAL FIBRILLATION NCT06134739 | Hospital Universitario La Paz | — |
| Unknown | First-time Ablation of Atrial Fibrillation Registry NCT06381245 | Medical University of Warsaw | — |
| Active Not Recruiting | RESOLVE-AF: Clinical Evaluation of the Ablacath™ Mapping Catheter and Ablamap® System Utilizing Electrographic NCT05883631 | Cortex | N/A |
| Unknown | Mobile Cardiac Outpatient Telemetry for Unexplained Syncope NCT05957315 | Carilion Clinic | N/A |
| Unknown | Impact of Liwen Procedure in Obstructive Hypertrophic Cardiomyopathy on Arrhythmias NCT06031519 | Xijing Hospital | — |
| Recruiting | Change in Inflammatory State in Patients Undergoing Transcatheter Ablation of Atrial Fibrillation NCT05961865 | Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico | — |
| Enrolling By Invitation | Stereotactic Arrhythmia Radioablation for Ventricular Tachycardia (StAR-VT) NCT05258422 | McGill University Health Centre/Research Institute of the McGill University Health Centre | Phase 2 |
| Completed | Prospective Study to Validate the Clinical Accuracy of the Norbert Device to Measure Pulse Rate NCT05640323 | Norbert Health | — |
| Unknown | A Multicenter Clinical Trial on DH001 Tablets in the Prevention of Doxorubicin-induced Cardiotoxicity in Cance NCT06092606 | Monyan Pharmaceutical (Shanghai) Co., Ltd. | Phase 2 |
| Recruiting | Safety and Efficacy of the Sentinel Cerebral Protection Device in Atrial Fibrillation Ablation NCT04685317 | Malini Madhavan | N/A |
| Unknown | Transseptal Italian Registry (TITLE) NCT05636046 | Luigi Sacco University Hospital | — |
| Unknown | Clinical Validation and Safety of the AC 12L ECG System Against a Standard of Care 12-Lead ECG (AC 12L ECG) NCT05617001 | University of Oklahoma | N/A |
| Completed | Remimazolam vs Desflurane for General Anesthesia for Ablation of Arrhythmia NCT05486377 | Seoul National University Bundang Hospital | Phase 4 |
| Completed | Cardiac Arrhythmias in Greenland NCT05200676 | Aalborg University Hospital | — |
| Recruiting | The Cardiac Stress and Electrocardiographic Changes Caused by Lung Cancer Surgery NCT05094843 | Tampere University Hospital | — |
| Active Not Recruiting | Electrophysiological Outcomes After Transcatheter Aortic Valve Replacement NCT07390513 | Chinese Academy of Medical Sciences, Fuwai Hospital | — |
| Unknown | mHealth Rhythm Management in Terms of Cancelling Unnecessary Scheduled ECVs in Presumed Persistent AFpatients. NCT06359132 | Maastricht University Medical Center | — |
| Completed | Intermittent Hypoxic-hyperoxic Training in Patients With Cardiovascular Pathology After COVID-19 Infection. NCT05379608 | I.M. Sechenov First Moscow State Medical University | N/A |
| Completed | Assessment of Physical Activity Levels in Patients With Cardiac Arrhythmias NCT07132853 | University of Sao Paulo | — |
| Completed | A Clinical Trial of the Use of Remote Heart Rhythm Monitoring With a Smartphone After Cardiac Surgery NCT05509517 | Universitaire Ziekenhuizen KU Leuven | N/A |
| Unknown | The Collection and Transmission of Electrocardiogram Using a Wearable Device NCT05182684 | Seoul National University Hospital | N/A |
| Completed | Epigenetic Analysis of Regulation of the Inflammasome-activating NLRP3 Gene in Monocytes From Atrial Fibrillat NCT04766814 | Tulane University | — |
| Completed | Clinical Validation of the AliveCor Kardia 12L and 6L Devices NCT05053243 | University of Oklahoma | N/A |
| Unknown | Drug-induced Brugada Syndrome Research Database NCT05048602 | University of Campania Luigi Vanvitelli | — |
| Completed | Perclose Multi-Access Duplex Ultrasound (DUS) Study NCT04904809 | Abbott Medical Devices | N/A |
| Unknown | The Effectiveness of Acupuncture for Complications in Critically Ill Patients NCT04950738 | China Medical University Hospital | N/A |
| Recruiting | DiamondTemp Global Registry NCT04735016 | Medtronic Cardiac Ablation Solutions | — |
| Completed | Effect of Topical Anesthesia on Hemodynamics During the Induction Period in Patients Undergo Cardiac Surgery. NCT04744480 | Qianfoshan Hospital | N/A |
| Withdrawn | Use of AliveCor ECG Monitoring to Replicate ECG Lead Recording NCT04472520 | Mayo Clinic | N/A |
| Completed | A Study to Evaluate the Effect of Vagus Nerve Stimulation in Patients Undergoing VT Ablation NCT04359004 | University of California, Los Angeles | N/A |
| Completed | Qubic Stim Cardiac Stimulator in China NCT04390841 | Biotronik (Beijing) Medical Device Ltd. | N/A |
| Terminated | Serratus Anterior or Erector Spinae Block for Hybrid Arrhythmia Ablation Surgery NCT04868058 | Universitair Ziekenhuis Brussel | N/A |
| Completed | Cardiovascular Effects of Exercise-related Hypoglycaemia in Patients With Type 1 Diabetes (Hypo Heart Exercise NCT04650646 | Steno Diabetes Center Copenhagen | N/A |
| Unknown | Perry Virtual - A Prospective and Observational Rural Health Trial NCT04483154 | Coala Life, Inc | — |
| Withdrawn | Virtual Reality to Reduce Intra-procedural Anxiety and Sedation Needs During Procedures NCT04279665 | Mayo Clinic | N/A |
| Completed | Study of Arrhythmia and ECG Abnormalities in Patients With COVID-19 NCT04937621 | University Hospital, Bordeaux | — |
| Unknown | COVIDAR - Arrhythmias in COVID-19 NCT04437901 | Hospital Clinic of Barcelona | — |
| Unknown | Meta-analysis of Fish Oil Supplementation and Cardiovascular Outcomes in Diabetes NCT04327713 | University of Toronto | — |
| Completed | Extended ECG Monitoring in HCM Patients NCT04056715 | iRhythm Technologies, Inc. | — |
| Unknown | Catheter Ablation in Congenital Heart Disease: French National Prospective Registry NCT04202796 | Paris Cardiovascular Research Center (Inserm U970) | — |
| Completed | Engaging Patients to Help Achieve Increased Patient Choice and Engagement for AFib Stroke Prevention NCT04096781 | Stanford University | N/A |
| Unknown | Electrophysiological Phenotyping Of Patients at Risk of Ventricular Arrhythmia and Sudden Cardiac Death NCT03910725 | Imperial College London | — |
| Active Not Recruiting | Obstructive Sleep Apnoea and Cardiac Arrhythmias NCT03866148 | University Hospitals Coventry and Warwickshire NHS Trust | N/A |
| Unknown | Efficacy and Safety of Sotalol in Children With Arrhythmia NCT03895411 | Shengjing Hospital | Phase 4 |
| Unknown | Population Pharmacokinetics of Propafenone and Propranolol in Children Patients NCT05463614 | Shandong University | — |
| Recruiting | European Prospective Registry on Anomalous Aortic Origin of the Coronary Arteries NCT06089902 | University of Padova | — |
| Active Not Recruiting | Validation of a Novel Smartphone-based Method for Heart Rhythm Monitoring in the Home Environment NCT04300270 | Karolinska Institutet | — |
| Unknown | Efficacy of Snap on Symptomatic Arrhythmia NCT03396133 | The First Affiliated Hospital with Nanjing Medical University | N/A |
| Completed | Upregulating the Nitric Oxide Pathway To Restore Autonomic Phenotype (UNTRAP). NCT03658174 | University of Leicester | N/A |
| Completed | Suitability of Unobtrusive Bed Monitoring and Wrist-worn Heart Rate Monitor for Patient Monitoring NCT03572751 | Tampere University Hospital | — |
| Completed | Observation of ImageReady™ MR Conditional Defibrillation System in China NCT03451721 | Boston Scientific Corporation | N/A |
| Unknown | Real Zero Fluoroscopy Catheter Ablation. NCT03458273 | Medical University of Lublin | — |
| Recruiting | Role of Endomyocardial Biopsy and Aetiology-based Treatment in Patients With Inflammatory Heart Disease in Arr NCT04521790 | Scientific Institute San Raffaele | — |
| Completed | Internet-delivered Cognitive Behavior Therapy for Atrial Fibrillation NCT03378349 | Karolinska Institutet | N/A |
| Completed | Esophageal 3D Mapping System for Cardiac Arrhythmias NCT03365440 | Insel Gruppe AG, University Hospital Bern | — |
| Recruiting | Ambulatory Surgical Center Implantable Cardioverter-Defibrillator Outcomes Registry NCT03604133 | QuesGen Systems Inc | — |
| Completed | The Effect of Proton Pump Inhibition on Palpitations NCT03273634 | Jordan Collaborating Cardiology Group | Phase 4 |
| Completed | Mobile Phone Detection of Atrial Fibrillation NCT03274583 | University of Turku | — |
| Completed | Arrhythmia Detection In Obstructive Sleep Apnea (ADIOS) NCT02743520 | University of Miami | N/A |
| Withdrawn | The Effects of a CONCOR Smartphone Application NCT02599857 | Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA) | N/A |
| Recruiting | Cardio-Oncology Registry NCT04407780 | European Georges Pompidou Hospital | — |
| Completed | Trial of a Best-Practice Alert in the Electronic Medical Record to Reduce Unnecessary Telemetry Monitoring NCT02529176 | University of California, San Francisco | N/A |
| Completed | Remote Cardiac Monitoring of Higher-Risk Emergency Department Syncope Patients After Discharge - A Pilot Study NCT02786940 | Ottawa Hospital Research Institute | N/A |
| Withdrawn | Inhibition of Atrial Fibrillation by Elimination of Transitional Mechanisms NCT02758002 | University of California, San Diego | N/A |
| Completed | Internet-based Cognitive Behavior Therapy for Atrial Fibrillation NCT02694276 | Karolinska Institutet | N/A |
| Completed | The Effect of Additional Propacetamol Infusion on Post Procedural Outcome and Opioid Consumption During Cathet NCT02515188 | Yonsei University | N/A |
| Unknown | Evaluation of Sleep Apnea and Cardiac Rhythm Abnormalities After Surgery Under General Anesthesia NCT02833662 | University Hospital, Grenoble | N/A |
| Terminated | Nursing Therapeutics Education and Heart Failure (HF): a Study Protocol NCT02425488 | University of Turin, Italy | N/A |
| Completed | Medtronic Reveal LINQ™ In-Office 2 (RIO 2) Study United States NCT02395536 | Medtronic Cardiac Rhythm and Heart Failure | N/A |
| Completed | Reveal LINQ™ In-Office 2 (RIO2) Study International NCT02412488 | Medtronic Cardiac Rhythm and Heart Failure | N/A |
| Terminated | Phenylephrine Versus Norepinephrine for Septic Shock in Critically Ill Patients NCT02203630 | Vanderbilt University Medical Center | Phase 4 |
| Unknown | Measuring Cardiovascular Stress in Patients on Hemodialysis Study II NCT02182089 | Intelomed, Inc. | — |
| Completed | RF Lesion Monitoring With 8mm IntellaTip MiFi XP NCT02089672 | Emory University | — |
| Terminated | Use of Ritmonutra in Subjects Affected by Supraventricular Ectopic Beats Without Structural Heart Disease NCT02087033 | IRCCS Policlinico S. Donato | N/A |
| Completed | Unipolar Atrial Electrogram Modification Combined to the Contact Force Sensing Technology for Pulmonary Vein I NCT02520960 | Hôpital Privé Les Franciscaines | — |
| Unknown | Dexmedetomidine for Catheter-related Bladder Discomfort NCT01991223 | Seoul National University Hospital | Phase 4 |
| Unknown | Intra Amniotic Injection of DIGOXIN for Feticide in Second Trimester Termination of Pregnancy NCT01951079 | Meir Medical Center | Phase 3 |
| Completed | The Use of Master Caution Garment for Continuous Monitoring for Arrhythmia Detection NCT01913561 | HealthWatch Ltd. | N/A |
| Unknown | P-wave Duration and Dispersion in Intrahepatic Cholestasis of Pregnancy NCT01906827 | Zekai Tahir Burak Women's Health Research and Education Hospital | — |
| Completed | Using Near-infrared Spectroscopy (NIRS) Monitor to Noninvasively Evaluate Hepatic Venous Saturation NCT01891188 | Phoenix Children's Hospital | — |
| Completed | Comparison of Alcoholic Chlorhexidine 2% Versus Alcoholic Povidone Iodine for Infections Prevention With Cardi NCT01841242 | Centre Hospitalier Universitaire de Saint Etienne | Phase 4 |
| Unknown | Arrhythmic Effects of Hight Dose Caffeine NCT02045992 | Luis Eduardo Paim Rohde | N/A |
| Recruiting | Role of Endomyocardial Biopsy and Aetiology-based Treatment in Pediatric Patients with Inflammatory Heart Dise NCT06591260 | Scientific Institute San Raffaele | — |
| Completed | ECG and VCG in Dependence of Body Posture NCT02094989 | Bern University of Applied Sciences | — |
| Completed | Prevention of Arrhythmia Device Infection Trial (PADIT) NCT01628666 | Population Health Research Institute | Phase 4 |
| Completed | Effect of Colchicine on the Incidence of Atrial Fibrillation in Open Heart Surgery Patients NCT03021343 | Jordan Collaborating Cardiology Group | Phase 3 |
| Completed | Comparison Between Lidocaine, Dexmedetomidine, and Their Combined Infusion in Subjects Undergoing Coronary Art NCT01688648 | Samsung Medical Center | N/A |
| Completed | PORTuguese Research on Telemonitoring With CareLink® (PORTLink) NCT03125382 | Medtronic Cardiac Rhythm and Heart Failure | N/A |
| Completed | Comparison of a MAGNET Protocol Versus "off-on" Protocol for Patients With Implantable Cardioverter Defibrilla NCT01599065 | Midwest Heart Foundation | — |
| Completed | A Multi-centre Study Comparing the Effects of AZD2927 and Placebo on the Electrical Activity in the Heart in P NCT01396226 | AstraZeneca | Phase 2 |
| Completed | Comparison of Rotational Angiography/Electroanatomical Mapping Fusion Versus CT/Electroanatomical Mapping Fusi NCT01537237 | Steward St. Elizabeth's Medical Center of Boston, Inc. | — |
| Completed | THERMOCOOL® SMARTTOUCH™ Catheter for the Treatment of Symptomatic Paroxysmal Atrial Fibrillation NCT01385202 | Biosense Webster, Inc. | Phase 3 |
| Completed | Prevention of Arrhythmia Device Infection Trial (PADIT) NCT01613092 | Population Health Research Institute | Phase 4 |
| Completed | FREEZE Cohort Study NCT01360008 | Stiftung Institut fuer Herzinfarktforschung | — |
| Unknown | Effect of Air Pollution in the Haifa Bay Area on Cardiovascular Morbidity and Mortality NCT01325155 | Rambam Health Care Campus | — |
| Completed | The Adjunctive Ventricular Arrhythmia Suppression Trial (AVAST) Pilot NCT01480336 | Hartford Hospital | N/A |
| Unknown | Telemetric Arrhythmia Diagnosis in Adults NCT01265758 | National Institute of Cardiology, Warsaw, Poland | N/A |
| Unknown | Optimizing Diagnostics Of Arrhythmia Events In Children Using Intelligent Telemetric Solutions NCT01265771 | National Institute of Cardiology, Warsaw, Poland | N/A |
| Completed | High-intensity Interval Training in Patients With Post-acute Coronary Syndrome NCT03414996 | Montreal Heart Institute | N/A |
| Completed | The Effect of General Anesthesia on the Risk for Arrhythmia NCT01174251 | University of California, San Francisco | — |
| Withdrawn | Catheter Ablation for Atrial Fibrillation and Heart Failure NCT01082601 | St. Luke's-Roosevelt Hospital Center | — |
| Unknown | Intranasal Injection Versus Topical Administration of Epinephrin During Endoscopic Sinus Surgery NCT01075581 | Tel-Aviv Sourasky Medical Center | N/A |
| Completed | Imaging With a Radio Tracer to Guide VT Ablations NCT01250912 | University of Maryland, Baltimore | N/A |
| Completed | An Arrhythmia Risk Stratification and Genetic Trial NCT01209494 | University Medical Center Goettingen | — |
| Withdrawn | Empiric Quinidine for Asymptomatic Brugada Syndrome NCT00789165 | International Registry of Asymptomatic Brugada Syndrome | Phase 2 / Phase 3 |
| Completed | Catheter Ablation vs Anti-arrhythmic Drug Therapy for Atrial Fibrillation Trial NCT00911508 | Mayo Clinic | N/A |
| Terminated | Mental Stress Reduction in Defibrillator Patients NCT00624520 | US Department of Veterans Affairs | Phase 3 |
| Terminated | NAVISTAR® THERMOCOOL® Catheter for the Radiofrequency Ablation of Symptomatic Paroxysmal Atrial Fibrillation- NCT00721149 | Biosense Webster, Inc. | Phase 3 |
| Completed | Does Atorvastatin Prevent Post Operative Atrial Fibrillation After Pulmonary Resection: A Randomized Clinical NCT00756886 | University of Alabama at Birmingham | N/A |
| Completed | MEDTRONIC ADAPTA, VERSA AND SENSIA nEw3 POST APPROVAL STUDY NCT01076374 | Medtronic | — |
| Completed | Establishing a Standard for Peri-operative Implantable Cardioverter Defibrillator (ICD) Patient Education NCT00845234 | East Carolina University | N/A |
| Completed | Effects of Docosahexaenoic Acid (DHA) on Heart Rate Variability in Elderly Patients NCT00749307 | Campus Bio-Medico University | Phase 2 / Phase 3 |
| Completed | German Ablation Quality-Register NCT01197638 | Stiftung Institut fuer Herzinfarktforschung | — |
| Unknown | Exercise Training in Patients With Cardioverter-Defibrillators NCT00754663 | University Hospital Tuebingen | N/A |
| Completed | The Use of Statins Following a Left Atrial Catheter Ablation Procedure to Prevent Atrial Fibrillation NCT00579098 | Mayo Clinic | Phase 4 |
| Completed | iPod and Other MP3 Players on ICDs and Pacemakers in Children NCT00542854 | Boston Children's Hospital | — |
| Completed | Single Ascending Dose of GAP-134 as a 24-hour IV Infusion in Healthy Japanese Males NCT00543946 | Wyeth is now a wholly owned subsidiary of Pfizer | Phase 1 |
| Completed | Single Ascending Dose Study of the Safety, Tolerability, and Pharmacokinetics of GAP-134 Administered Intraven NCT00510029 | Wyeth is now a wholly owned subsidiary of Pfizer | Phase 1 |
| Unknown | Cardiac Arrest Recovery EEG Study NCT00483873 | Infinite Biomedical Technologies | — |
| Completed | A Collaborative Care Program to Improve Depression Treatment in Cardiac Patients NCT00847132 | Massachusetts General Hospital | N/A |
| Completed | Diagnostic Investigation of Sudden Cardiac Event Risk NCT00500708 | CardioDx | — |
| Withdrawn | Omega 3 Polyunsaturated Fatty Acid Supplements (PUFAs) and Microvolt T Wave Alternans (TWA) in Patients With V NCT00507390 | University of Dundee | Phase 4 |
| Unknown | Feasibility Study: Sleuth Monitoring System NCT00719277 | Transoma Medical | N/A |
| Completed | Electrocardiogram (ECG) Recordings in Paediatric Population NCT00399386 | Boston Scientific Corporation | — |
| Completed | CONNECT Study - Clinical Evaluation Of Remote NotificatioN to rEduCe Time to Clinical Decision NCT00402246 | Medtronic Cardiac Rhythm and Heart Failure | N/A |
| Completed | Ablation vs Drug Therapy for Atrial Fibrillation - Pilot Trial NCT00578617 | Mayo Clinic | N/A |
| Completed | Psychosomatic Effects of Implantable Cardioverter Defibrillator With Home Monitoring Function (QUANTUM) NCT00325221 | Biotronik SE & Co. KG | N/A |
| Completed | EVITA: Evaluation of VIP Feature in Pacemaker Patients NCT00366158 | Abbott Medical Devices | N/A |
| Completed | Concentrations of Amiodarone in Fat Tissue During Chronic Treatment NCT00313443 | Hopital Lariboisière | Phase 4 |
| Terminated | Measuring Electrical Resistance of Different Tissues on the Outer Surface of the Heart NCT00291174 | University of Pennsylvania | — |
| Unknown | Magnesium to Reduce Implantable Cardioverter Defibrillator (ICD) Shocks and Improve Patient's Quality of Life. NCT00282620 | Hartford Hospital | Phase 4 |
| Terminated | Study Evaluating GAP-486 in Heart Rhythm NCT00137293 | Wyeth is now a wholly owned subsidiary of Pfizer | Phase 2 |
| Completed | Defining The Role Of Dialysate Magnesium In Arrhythmogenicity On Dialysis NCT00242164 | University of Michigan | Phase 2 |
| Terminated | Study Evaluating GAP-486 on Heart Rhythm in Patients With Coronary Artery Disease NCT00137332 | Wyeth is now a wholly owned subsidiary of Pfizer | Phase 2 |
| Unknown | Effect of Supplemental Intake of Omega-3 Polyunsaturated Fatty Acids on the Rate and Complexity of Spontaneous NCT00290056 | Sheba Medical Center | Phase 4 |
| Unknown | Cerebral Artery Stenosis, Coronary Artery Disease and Arrhythmia NCT00247533 | Far Eastern Memorial Hospital | Phase 4 |
| Completed | Effects of Fatty and Lean Fish Intake on Cardiovascular Risk Factors in Subjects With Coronary Heart Disease NCT00720655 | University of Eastern Finland | N/A |
| Completed | Reduce Ventricular Pacing in Dual Chamber Implantable Cardioverter Defibrillators Using AutoIntrinsic Conducti NCT00187239 | Abbott Medical Devices | Phase 4 |
| Completed | Double Blind Placebo Controlled Dose Ranging Study of the Efficacy and Safety of SSR149744c 100 or 300 mg for NCT00232297 | Sanofi | Phase 2 |
| Completed | Study of the Implantable Cardioverter Defibrillator (ICD) Intracardiac Electrograms NCT00916435 | Johns Hopkins University | — |
| Completed | PANORAMA Observational Study NCT00382525 | Medtronic Cardiac Rhythm and Heart Failure | — |
| Completed | Trial to Investigate the Efficacy of Olmesartan in Paroxysmal Atrial Fibrillation NCT00098137 | Atrial Fibrillation Network | Phase 3 |
| Completed | NAVISTAR® THERMOCOOL® Catheter for the Radiofrequency Ablation of Symptomatic Paroxysmal Atrial Fibrillation NCT00116428 | Biosense Webster, Inc. | Phase 3 |
| Completed | PREFER (Pacemaker Remote Follow-Up Evaluation and Review) NCT00294645 | Medtronic Cardiac Rhythm and Heart Failure | N/A |
| Completed | CAPTURE - Complete Automatic Pacing Threshold Utilization Recorded by EnPulse NCT00275769 | Medtronic Cardiac Rhythm and Heart Failure | N/A |
| Terminated | Quality of Life in Patients Post Radiofrequency Ablation NCT00165997 | Emory University | — |
| Completed | REFLEx Study (ENDOTAK RELIANCE G Evaluation of Handling and Electrical Performance NCT00146822 | Boston Scientific Corporation | Phase 4 |
| Completed | Reducing Episodes by Septal Pacing Efficacy Confirmation Trial (RESPECT) NCT00289289 | Medtronic Cardiac Rhythm and Heart Failure | N/A |
| Completed | Atropine for Prevention of Dysrhythmias Caused by Percutaneous Ethanol Instillation for Hepatoma Therapy NCT00575523 | Medical University of Vienna | Phase 4 |
| Unknown | Cost-Effectiveness of Routine Follow-up Visits in Patients With a Pacemaker: The Followpace Study NCT00135174 | UMC Utrecht | — |
| Completed | Genetic Determinants of Sudden Cardiac Death NCT00064558 | Brigham and Women's Hospital | — |
| Recruiting | Prospective Observational Study of the ICD in Sudden Cardiac Death Prevention NCT00733590 | Johns Hopkins University | — |
| Completed | Relationship Between Functional Health Status and Ventricular Performance After Fontan--Pediatric Heart Networ NCT00132782 | Carelon Research | — |
| Completed | The HF-HRV Registry NCT00236236 | Boston Scientific Corporation | — |
| Completed | A Randomized Trial of the Ostial Versus the Extra-Ostial Ablation Strategy for Atrial Fibrillation NCT00192972 | Rigshospitalet, Denmark | N/A |
| Completed | Electrophysiological Effects of Late PCI After MI NCT00119847 | University of Maryland, Baltimore | N/A |
| Completed | Atrial Fibrillation Incidence, Risk Factors and Genetics NCT00021905 | National Heart, Lung, and Blood Institute (NHLBI) | — |
| Completed | Cardiac Rhythm Abnormalities in Patients With Refractory Epilepsy at High Risk for Sudden Death NCT00203333 | Thomas Jefferson University | — |
| Completed | SOFA: Study on Omega-3 Fatty Acids and Ventricular Arrhythmia NCT00110838 | Wageningen Centre for Food Sciences | Phase 3 |
| Completed | Genetic Architecture of Heart Disease in Rural Brazil NCT00023556 | National Heart, Lung, and Blood Institute (NHLBI) | — |
| Completed | Efficacy and Safety Evaluation of Azimilide Dihydrochloride in Patients With Implantable Cardioverter Defibril NCT00035490 | Forest Laboratories | Phase 3 |
| Completed | Long-Term Follow-Up of Patients Undergoing Catheter Ablation NCT00584558 | University of Oklahoma | — |
| Completed | The Atrial High Rate Episodes in Pacemaker Patients NCT00627328 | Medtronic Cardiac Rhythm and Heart Failure | — |
| Completed | Atorvastatin For The Reduction Of Ventricular Arrhythmias NCT00457340 | Pfizer's Upjohn has merged with Mylan to form Viatris Inc. | Phase 4 |
| Completed | Model 4968 CAPTURE EPI® STERIOD-ELUTING BIPOLAR EPICARDIAL PACING LEAD Post-approval Study NCT01076361 | Medtronic | — |
| Completed | Public Access Defibrillation (PAD) Community Trial NCT00004560 | National Heart, Lung, and Blood Institute (NHLBI) | Phase 3 |
| Completed | Anxiety and Vagal Control of the Heart in Coronary Disease NCT00006311 | National Heart, Lung, and Blood Institute (NHLBI) | — |
| Completed | Fatty Acid Antiarrhythmia Trial (FAAT) NCT00004559 | National Heart, Lung, and Blood Institute (NHLBI) | Phase 3 |
| Completed | Antiarrhythmic Effects of N-3 Fatty Acids NCT00004558 | National Heart, Lung, and Blood Institute (NHLBI) | Phase 2 |
| Completed | Prospective Assessment After Pediatric Cardiac Ablation (PAPCA) NCT00005553 | Stanford University | — |
| Completed | Sudden Cardiac Death in Heart Failure Trial (SCD-HeFT) NCT00000609 | National Heart, Lung, and Blood Institute (NHLBI) | Phase 3 |
| Recruiting | Genetics of Cardiovascular and Neuromuscular Disease NCT00138931 | University of Chicago | — |
| Completed | Model 4965 Post-Approval Study NCT01076348 | Medtronic | — |
| Completed | Arrhythmias in Myotonic Muscular Dystrophy NCT00622453 | Indiana University School of Medicine | — |
| Completed | Mode Selection Trial in Sinus Node Dysfunction (MOST) NCT00000561 | Mt. Sinai Medical Center, Miami | Phase 3 |
| Completed | Atrial Fibrillation Follow-up Investigation of Rhythm Management (AFFIRM) NCT00000556 | National Heart, Lung, and Blood Institute (NHLBI) | Phase 3 |
| Completed | Evaluation and Treatment of Heart Disease in Patients Not Participating in Research NCT00001460 | National Heart, Lung, and Blood Institute (NHLBI) | N/A |
| Completed | Epidemiology of Long QTand Asian Sudden Death in Sleep NCT00005367 | Utah State University | — |
| Completed | Coronary Artery Bypass Graft (CABG) Patch Trial NCT00000540 | National Heart, Lung, and Blood Institute (NHLBI) | Phase 3 |
| Completed | Antiarrhythmics Versus Implantable Defibrillators (AVID) NCT00000531 | National Heart, Lung, and Blood Institute (NHLBI) | Phase 3 |
| Completed | Cardiac Autonomic Control in Children of HIV Positive Mothers NCT00005353 | National Heart, Lung, and Blood Institute (NHLBI) | — |
| Completed | Multicenter Unsustained Tachycardia Trial (MUSTT) NCT00000480 | National Heart, Lung, and Blood Institute (NHLBI) | Phase 3 |
| Completed | Mechanisms Underlying Psychosocial Associations With Ischemic Heart Disease (Kuopio) NCT00005260 | National Heart, Lung, and Blood Institute (NHLBI) | — |
| Completed | Digitalis Investigation Group (DIG) NCT00000476 | National Heart, Lung, and Blood Institute (NHLBI) | Phase 3 |
| Completed | Proarrhythmic Medicines and Primary Cardiac Arrest NCT00005253 | University of Washington | — |
| Completed | Cardiac Arrhythmias and the Perception of Symptoms NCT00005688 | National Heart, Lung, and Blood Institute (NHLBI) | — |
| Completed | Triggers of Ventricular Arrhythmias (TOVA) Study NCT00005243 | National Heart, Lung, and Blood Institute (NHLBI) | — |
| Completed | Epidemiology of Symptomatic Arrhythmias NCT00005237 | National Heart, Lung, and Blood Institute (NHLBI) | — |
| Completed | Multicenter Study of Silent Myocardial Ischemia (MSSMI) NCT00005216 | University of Rochester | — |
| Completed | Identifying High Risk Patients With Syncope NCT00005202 | National Heart, Lung, and Blood Institute (NHLBI) | — |
| Completed | Cardiac Arrest in Seattle: Conventional Versus Amiodarone Drug Evaluation (CASCADE) NCT00000464 | University of Washington | Phase 3 |
| Completed | Catheter Ablation Registry NCT00005195 | National Heart, Lung, and Blood Institute (NHLBI) | — |
| Completed | Boston Area Anticoagulation Trial for Atrial Fibrillation (BAATAF) NCT00000517 | Massachusetts General Hospital | Phase 3 |
| Completed | Electrophysiologic Study Versus Electrocardiographic Monitoring (ESVEM) NCT00000518 | University of Utah | Phase 3 |
| Recruiting | Product Performance Report: Evaluate Long-term Reliability & Performance of Medtronic Marketed Cardiac Therapy NCT00271180 | Medtronic | — |
| Completed | Cardiac Arrhythmia Pilot Study (CAPS) NCT00000504 | National Heart, Lung, and Blood Institute (NHLBI) | Phase 2 |
| Completed | Evaluation of SC-V Versus Conventional CPR NCT00000502 | National Heart, Lung, and Blood Institute (NHLBI) | Phase 3 |
| Completed | Beta-Blocker Heart Attack Trial (BHAT) NCT00000492 | National Heart, Lung, and Blood Institute (NHLBI) | Phase 3 |
| Unknown | Selection of Shock Energy in Out-Of-Hospital Cardiac Arrest NCT00472147 | Charite University, Berlin, Germany | N/A |
| Available | To Validate the Specific Patterns of Magnetocardiography, a Non-invasive Non-contact Examination for Patients NCT00965614 | National Taiwan University Hospital | — |