| Not Yet Recruiting | Feasibility and Outcomes Registry of Lumenless dEfibrillation Leads for Conduction System Pacing NCT07406737 | University Hospital, Caen | — |
| Recruiting | Safety and Performance Evaluation of a New Catheter Range for Lead Implantation At Interventricular Septum NCT06453850 | MicroPort CRM | N/A |
| Active Not Recruiting | Left Bundle Branch Area Pacing in Patients With Heart Failure NCT06488989 | National Research Center for Cardiac Surgery, Kazakhstan | N/A |
| Completed | Effects of IMT on Cardiac Resynchronization Therapy NCT07035340 | Tarsus University | N/A |
| Recruiting | Comparison of Upper Extremity Function, Physical Activity Levels and Peripheral Muscle Strength, Fear of Movem NCT06775691 | Erol Olcok Corum Training and Research Hospital | — |
| Recruiting | CSP Versus BiVP for Heart Failure Patients with RVP Upgraded to Cardiac Resynchronization Therapy NCT06241651 | The First Affiliated Hospital with Nanjing Medical University | N/A |
| Recruiting | Conduction System Pacing vs Biventricular Pacing in Systolic Dysfunction and Wide QRS: Mortality, Heart Failur NCT06105580 | Hospital Clinic of Barcelona | N/A |
| Recruiting | Verifying Remote Monitoring Effect on Net Cardiovascular Outcome; RemoteVerify (RêVe) NCT05971225 | Saint Vincent's Hospital, Korea | N/A |
| Unknown | LVSP Based CRT vs. RVAP Based CRT NCT05985408 | Fu Wai Hospital, Beijing, China | N/A |
| Recruiting | Cardiac Resynchronization Therapy Delivery Guided Non-Invasive Electrical and Venous Anatomy Assessment NCT05327062 | XSpline S.p.A. | N/A |
| Recruiting | His-Bundle Corrective Pacing in Heart Failure NCT05265520 | University of Rochester | N/A |
| Completed | ElectrocardioGraphic Imaging During Left bUndle Branch Implant to valiDate Ecg Criteria NCT06509763 | Hospital Clinic of Barcelona | N/A |
| Recruiting | Absolute Coronary Flow in Patients With Heart Failure With Reduced Ejection Fraction and Left Bundle Branch Bl NCT05564689 | Ashkan Eftekhari | — |
| Active Not Recruiting | THE RELATİONSHİP BETWEEN BLOOD GAS PARAMETERS OBTAİNED FROM THE CORONARY SİNUS DURİNG THE PROCEDURE AND CRT RE NCT07436377 | Trakya University | — |
| Active Not Recruiting | Factors Associated With Response to Cardiac Resynchronization Therapy in Heart Failure Patients With Non-LBBB NCT06977217 | University of Rochester | — |
| Completed | ECGi of SyncAV With MultiPoint Pacing NCT06444386 | Abbott Medical Devices | — |
| Terminated | Ertugliflozin to Reduce Arrhythmic Burden in ICD/CRT patientS (ERASe-Trial) - a Phase III Study NCT04600921 | Medical University of Graz | Phase 3 |
| Terminated | Atrial Fibrillation Associated With Heart Failure Treated by BIOTRONIK's CRT-DX System NCT04870281 | Biotronik, Inc. | — |
| Active Not Recruiting | Assessment of the Axone Micro Quadripolar Lead for Enhanced Cardiac Resynchronization Therapy NCT04463641 | MicroPort CRM | N/A |
| Completed | Impact of Catheter Ablation of Ventricular Arrhythmias on Suboptimal Biventricular Pacing in Cardiac Resynchro NCT04065893 | Universitätsklinikum Köln | — |
| Completed | Acute Effects of LBBP Versus BVP for CRT NCT04505384 | Shanghai Zhongshan Hospital | N/A |
| Completed | Septal Mapping And Resynchronisation Therapy- (SMART) Study NCT04595305 | Abbott Medical Devices | N/A |
| Suspended | cArdiac Non Invasive MApping in resynchronizaTION NCT04347109 | University Hospital, Tours | — |
| Terminated | Prospective Multicentric Study Comparing the Acute Hemodynamic Effect of Three Modes of Stimulation in Cardiac NCT03779802 | CMC Ambroise Paré | N/A |
| Terminated | ECG for Programming in CRT NCT03936608 | Washington University School of Medicine | N/A |
| Completed | Safety and Performance Aspects of CRT-DX System in Patients With Sinus Rhythm NCT03839121 | Biotronik SE & Co. KG | — |
| Completed | Electrical Resynchronization and Acute Hemodynamic Effects of Direct His Bundle Pacing Compared to Biventricul NCT03452462 | University Hospital, Geneva | N/A |
| Terminated | Electrical Optimization of Cardiac Resynchronization Therapy in Non-responder Patients NCT03789487 | CMC Ambroise Paré | N/A |
| Unknown | Comparison of CRT-D and CRT-DX Systems (CRT-NEXT) NCT03587064 | Associazione Portatori Dispositivi Impiantabili Cardiaci | N/A |
| Completed | Precision Event Monitoring for Patients With Heart Failure Using HeartLogic NCT03579641 | Boston Scientific Corporation | — |
| Unknown | Simultaneous or Sequential Multipoint Pacing NCT03301363 | IRCCS Policlinico S. Donato | — |
| Unknown | Left Ventricular Septal Pacing: Potential Application for Cardiac Resynchronization Therapy NCT03415945 | Maastricht University Medical Center | N/A |
| Completed | Narrow QRS HF Patients Assessed by ECG Belt NCT03367104 | Allina Health System | — |
| Completed | Prospective Randomized Trial Comparing TRIPLE Site ventriculAr Stimulation Versus Conventional Pacing in CRT c NCT02962791 | University Hospital, Rouen | N/A |
| Completed | Efficacy, Safety and Cost of Remote Monitoring of Patients With Cardiac Resynchronization Therapy NCT03012490 | University Hospital, Lille | N/A |
| Completed | BIO|MASTER.Edora Family Study NCT03091322 | Biotronik SE & Co. KG | — |
| Unknown | Impact of MultiPoint Pacing Technology in CRT Patients With Reduced RV-to-LV Delay NCT02713308 | Monaldi Hospital | — |
| Terminated | SonR Based Stimulation-VECtor OPTimisation in CRT Patients NCT03092349 | Heart and Diabetes Center North-Rhine Westfalia | — |
| Completed | Comparison of Multi-point Pacing and Conventional CRT Through Non-invasive Hemodynamics Measurement and Global NCT04299360 | Azienda Ospedaliera Universitaria Mater Domini, Catanzaro | — |
| Active Not Recruiting | WiCS-LV Post Market Surveillance Registry NCT02610673 | EBR Systems, Inc. | — |
| Completed | Revisit the Value of Imaging in Best Using CArdiac Resynchronization Therapy NCT02528032 | Rennes University Hospital | N/A |
| Withdrawn | Comparative Study to Examine Whether Echocardiography Performed During Cardiac Resynchronization Therapy Devic NCT01014000 | Princess Margaret Hospital, Hong Kong | N/A |
| Unknown | Echocardiography in Cardiac Resynchronization Therapy (Echo-CRT) NCT02986633 | Lille Catholic University | — |
| Unknown | Corrected Left Ventricular Electrical Delay Predicting Response to Cardiac Resynchronization Therapy NCT02493907 | Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University | — |
| Suspended | MRI Assessment of Patient Suitability for Cardiac Resynchronization Therapy (CRT) NCT02728336 | NYU Langone Health | N/A |
| Completed | Imaging Study of Allocation of Pacing Targets in Cardiac Resynchronization Therapy NCT01640769 | Libin Cardiovascular Institute of Alberta | N/A |
| Completed | Evaluation of ACUITY™ X4 Quadripolar Coronary Venous Leads and RELIANCE™ 4-FRONT Defibrillation Leads NCT02071173 | Boston Scientific Corporation | N/A |
| Completed | Quartet™ Bad Oeynhausen Trial NCT01850264 | Heart and Diabetes Center North-Rhine Westfalia | N/A |
| Completed | Exercise Training Following Cardiac Resynchronization Therapy in Patients With Chronic Heart Failure NCT02413151 | University of Lisbon | N/A |
| Completed | Optimal Cardiac Resynchronization Therapy Pacing Rate NCT02258061 | Rigshospitalet, Denmark | EARLY_Phase 1 |
| Unknown | POsition of Leads in Advanced heaRt Failure: the POLAR Study NCT01515761 | Sergio Thal, M.D. | N/A |
| Completed | Acute Evaluation of the Safety of Left Ventricular-left Ventricular (LV-LV) Delays and Its Effects on Mechanic NCT01044784 | Abbott Medical Devices | — |
| Completed | Improvement in Clinical Outcomes in Heart Failure Patients With ICDs That Practice Meditation NCT00611260 | University of California, Davis | N/A |
| Terminated | Use of 3-D Blood Pool Scintigraphy to Guide Left Ventricular Pacing Lead Placement in Patients Requiring Cardi NCT02669290 | University of California, San Francisco | N/A |
| Completed | TRIAGE-CRT Telemonitoring in Patients With CHF and Indication of CRT-D NCT00395642 | Biotronik, Inc. | Phase 4 |
| Terminated | MAGNET CRT Feasibility - Efficiency of LV Lead Placement Comparing Conventional vs. Magnetic Guidance NCT00370474 | Stereotaxis | Phase 4 |
| Completed | Comparison of Epicardial Versus Conventional Lead Placement in Cardiac Resynchronization Therapy NCT01302470 | St. Luke's-Roosevelt Hospital Center | N/A |
| Completed | Tissue Doppler Imaging (TDI) Versus Electrocardiography (ECG) Interventricular Pacing Delay Optimization in Ca NCT01179997 | Hospital Clinic of Barcelona | Phase 3 |