| Recruiting | National Registry of Cardioneuroablation in Recurrent Reflex Syncope NCT06159764 | University Hospital, Bordeaux | — |
| Active Not Recruiting | Heart Rate Variation in Females Predicts Tilt Test Results NCT06496074 | Federal University of Piaui | — |
| Recruiting | Cardioneuroablation and Ventricular Proarrhythmia NCT06458140 | Centre of Postgraduate Medical Education | N/A |
| Recruiting | Cardioneuroablation: Fragmented Atrial Potentials, Intracardiac Echocardiography and Computed Tomography NCT06472102 | Centre of Postgraduate Medical Education | N/A |
| Completed | Assessment of the Mechanism of Non-cardiac Syncope NCT05728255 | Istituto Auxologico Italiano | — |
| Recruiting | Impact of Blood Phobia on Fainting Susceptibility NCT06336031 | Simon Fraser University | N/A |
| Unknown | Cardiac Autonomic Denervation for Cardio-inhibitory Syncope NCT05572034 | University of Sao Paulo General Hospital | N/A |
| Recruiting | Cardioneuroablation for Reflex Syncope and Exercise Capacity NCT06440291 | Centre of Postgraduate Medical Education | N/A |
| Recruiting | Postural Sway and Counterpressure Maneuvers for Pediatric Syncope NCT05633693 | Simon Fraser University | N/A |
| Unknown | Treatment Strategy of Vasovagal Syncope NCT05803148 | China National Center for Cardiovascular Diseases | N/A |
| Completed | Effect of Pharmacological Interventions on Systolic Blood Pressure Drops (SynABPM 2 Proof-of-concept) NCT05729724 | Istituto Auxologico Italiano | — |
| Completed | Head-up Tilt Test in Patients With Reflex Syncope and Asystolic Response Who Received a Dual-chamber Pacemaker NCT06038708 | Biotronik SE & Co. KG | — |
| Recruiting | Paediatric Syncope in the Emergency Department NCT05555771 | Dr. Victoria Claydon | N/A |
| Unknown | Compression Stockings for Treating Vasovagal Syncope Trial NCT05086679 | Tehran Heart Center | N/A |
| Completed | The Effect of CPC on Aborting Tilt Induced Syncope in Patients With a History of Vasovagal Syncope or Near Syn NCT04972123 | University of Wisconsin, Madison | Phase 2 |
| Completed | Detecting Syncope by an Integrated Multisensor Patch-type Recorder NCT05782699 | Istituto Auxologico Italiano | N/A |
| Completed | Wearable Monitor in Patients With Syncope NCT05782647 | Istituto Auxologico Italiano | N/A |
| Completed | Presyncope (Syncope) Prevention Study NCT04772755 | Duke University | N/A |
| Completed | Different Catheter Ablation Strategy in Vasovagal Syncope NCT05573178 | China National Center for Cardiovascular Diseases | N/A |
| Unknown | Midodrine and Fludrocortisone for Vasovagal Syncope NCT04595942 | Tehran Heart Center | Phase 3 |
| Completed | Cardioneuroablation for Reflex Syncope NCT03903744 | Centre of Postgraduate Medical Education | N/A |
| Completed | Preventing Post-Vaccination Presyncope and Syncope in Adolescents Using Simple, Clinic-based Interventions: A NCT03533829 | Duke University | N/A |
| Unknown | Management of Sleep Apnoea Syndrome (SAS) in Patients With Vasovagal Syncope (VVS) NCT04294524 | PEAS (Pole d'Exploration des Apnees du Sommeil) | — |
| Completed | Second Study on Cardio-neuromodulation in Humans NCT02954666 | Imelda Hospital, Bonheiden | N/A |
| Unknown | Respiration and Applied Tension Strategies to Reduce Vasovagal Reactions to Blood Donation NCT03159156 | McGill University | N/A |
| Completed | Influence of Yoga in Patients With Neurocardiogenic Syncope NCT01695525 | Dhanunjaya Lakkireddy, MD, FACC | EARLY_Phase 1 |
| Completed | Tilt Table With Suspected Postural Orthostatic Tachycardia Syndrome (POTS) Subjects NCT01617616 | Wake Forest University Health Sciences | — |
| Completed | Predictive Factors for Hypotensive Bradycardic Events During Arthroscopic Shoulder Surgery NCT01926561 | Daegu Catholic University Medical Center | — |
| Completed | Cardiac Autonomic Dysfunction in Diabetics Patients With Syncope NCT03717207 | University of Campania Luigi Vanvitelli | — |
| Completed | Safety/Efficacy Study of Local Anesthetic Prior to Femoral Artery Sheath Removal NCT00465439 | Hamilton Health Sciences Corporation | N/A |
| Unknown | Closed Loop Stimulation for Neuromediated Syncope (SPAIN Study) NCT01621464 | Spanish Society of Cardiology | Phase 4 |
| Completed | Preventing Negative Reactions in First Time Blood Donors to Encourage Subsequent Blood Donations NCT00302900 | Ohio University | Phase 2 |
| Completed | The Effectiveness of Metoprolol in the Prevention of Syncope Recurrence in Children and Adolescents NCT00475462 | Peking University First Hospital | N/A |