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Showing 1–24 of 107 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Bradycardia Clear all
Completed Not applicable Interventional

BIOTRONIK Conduction System Pacing With the Solia Lead - Solia CSP S

NCT06540079
View directory record Official record
Conditions
Sinus Node Dysfunction, Bradycardia, Atrioventricular Block
Interventions
Solia CSP S lead
Device
Lead sponsor
Biotronik, Inc.
Industry
Eligibility
18 Years and older
Enrollment
192 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
10
States / cities
Phoenix, Arizona • Ventura, California • Sarasota, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Jul 21, 2026, 5:03 AM EDT
Completed No phase listed Observational

The Atrial High Rate Episodes in Pacemaker Patients

NCT00627328
View directory record Official record
Conditions
Arrhythmia, Atrial Fibrillation, Atrioventricular Block, Bradycardia, Sick Sinus Syndrome
Interventions
Not listed
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
50 Years and older
Enrollment
427 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2004
U.S. locations
37
States / cities
Hot Springs, Arkansas • Little Rock, Arkansas • Fresno, California + 34 more
Source: ClinicalTrials.gov public record
Updated Mar 2, 2008 · Synced Jul 21, 2026, 5:03 AM EDT
Active, not recruiting No phase listed Observational

Cardiac Implantable Electronic Device (CIED) Research Study

NCT05061862
View directory record Official record
Conditions
Arrhythmias, Cardiac, Bradycardia, Tachycardia
Interventions
cardiac implantable electronic devices (CIEDs)
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
1,000 participants
Timeline
2022 – 2026
U.S. locations
8
States / cities
Gainesville, Florida • Macon, Georgia • Portland, Oregon + 5 more
Source: ClinicalTrials.gov public record
Updated Dec 9, 2025 · Synced Jul 21, 2026, 5:03 AM EDT
Completed Not applicable Interventional Results available

EMRI SureScan™ Clinical Study

NCT00433654
View directory record Official record
Conditions
Bradycardia, Slow Heart Beat
Interventions
Implantable Pulse Generator (IPG) and Pacing Leads (wires), Magnetic Resonance Imaging (MRI) scan
Device · Other
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
Not listed
Enrollment
484 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
15
States / cities
Redwood City, California • Salinas, California • Orlando, Florida + 12 more
Source: ClinicalTrials.gov public record
Updated Sep 14, 2025 · Synced Jul 21, 2026, 5:03 AM EDT
Completed Not applicable Interventional Results available

Non-invasive Intervention for Apnea of Prematurity

NCT02641249
View directory record Official record
Conditions
Apnea of Prematurity, Hypoxia, Bradycardia
Interventions
Vibration
Device
Lead sponsor
University of California, Los Angeles
Other
Eligibility
1 Week and older
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
2
States / cities
Los Angeles, California • Santa Monica, California
Source: ClinicalTrials.gov public record
Updated May 8, 2017 · Synced Jul 21, 2026, 5:03 AM EDT
Completed Not applicable Interventional Results available

Safety and Performance Study of the INGEVITY Lead

NCT01688843
View directory record Official record
Conditions
Bradycardia, Sinus Node Dysfunction
Interventions
INGEVITY lead
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
1,060 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2019
U.S. locations
44
States / cities
Gilbert, Arizona • Glendale, Arizona • Tucson, Arizona + 39 more
Source: ClinicalTrials.gov public record
Updated Mar 9, 2020 · Synced Jul 21, 2026, 5:03 AM EDT
Completed No phase listed Observational

Validation of the NTX Wireless Patient Monitoring System

NCT00644644
View directory record Official record
Conditions
Desaturation, Bradycardia, Tachycardia, Hypertension, Hypotension
Interventions
Rapid Response Team (NTX wireless monitoring system)
Other
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
1,303 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 10, 2017 · Synced Jul 21, 2026, 5:03 AM EDT
Completed No phase listed Observational

Conduction System Pacing With INGEVITY+

NCT06014866
View directory record Official record
Conditions
Bradycardia
Interventions
Cardiac pacing
Device
Lead sponsor
Duke University
Other
Eligibility
1 Day and older
Enrollment
1,383 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
8
States / cities
Sarasota, Florida • Chicago, Illinois • Indianapolis, Indiana + 5 more
Source: ClinicalTrials.gov public record
Updated May 22, 2025 · Synced Jul 21, 2026, 5:03 AM EDT
Completed Phase 2 Interventional

Safety and Efficacy Study of an A1-Adenosine Receptor Agonist to Slow Heart Rate in Atrial Fibrillation

NCT00040001
View directory record Official record
Conditions
Atrial Fibrillation
Interventions
DTI-0009
Drug
Lead sponsor
Aderis Pharmaceuticals
Industry
Eligibility
18 Years to 85 Years
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Jul 21, 2026, 5:03 AM EDT
Completed Not applicable Interventional

DTaP and Apnea/Bradycardia in Preterm Infants

NCT00482781
View directory record Official record
Conditions
Prolonged Apnea, Prolonged Bradycardia
Interventions
Infanrix, Pediatrix
Biological
Lead sponsor
American SIDS Institute
Other
Eligibility
56 Days to 60 Days
Enrollment
191 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2004
U.S. locations
10
States / cities
Austell, Georgia • Marietta, Georgia • Belle Mead, New Jersey + 6 more
Source: ClinicalTrials.gov public record
Updated Jun 4, 2007 · Synced Jul 21, 2026, 5:03 AM EDT
Completed Not applicable Interventional Results available

Safety and Efficacy of the Accent Magnetic Resonance Imaging™ (MRI) Pacemaker and Tendril MRI™ Lead

NCT01576016
View directory record Official record
Conditions
Adverse Effect of MRI on an Implanted Pacemaker Lead, Adverse Effect of MRI on an Implanted Pacemaker
Interventions
Accent MRI system (lead safety), Accent MRI system (with MRI scan)
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
Not listed
Enrollment
950 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2018
U.S. locations
66
States / cities
Birmingham, Alabama • Huntsville, Alabama • Phoenix, Arizona + 57 more
Source: ClinicalTrials.gov public record
Updated Nov 9, 2020 · Synced Jul 21, 2026, 5:03 AM EDT
Completed No phase listed Observational

Micra AV Transcatheter Pacing System Post-Approval Registry

NCT04253184
View directory record Official record
Conditions
Bradycardia
Interventions
Micra AV Transcatheter Pacing System
Device
Lead sponsor
Medtronic
Industry
Eligibility
Not listed
Enrollment
802 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
46
States / cities
Birmingham, Alabama • Rancho Mirage, California • Redwood City, California + 37 more
Source: ClinicalTrials.gov public record
Updated Feb 3, 2026 · Synced Jul 21, 2026, 5:03 AM EDT
Not yet recruiting Not applicable Interventional

Application to Predict Neonatal Apnea With Bradycardia

NCT06852053
View directory record Official record
Conditions
Apnea Neonatal, Bradycardia Neonatal
Interventions
Closed-loop Vibro-Tactile Stimulator, Control
Device
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
22 Weeks to 32 Weeks
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jul 6, 2026 · Synced Jul 21, 2026, 5:03 AM EDT
Completed Phase 4 Interventional Results available

Heart Rate Response to Atropine Doses Less Than 0.1mg IV to Anesthetized Infants

NCT01819064
View directory record Official record
Conditions
Bradycardia, Arrhythmias
Interventions
Atropine
Drug
Lead sponsor
State University of New York at Buffalo
Other
Eligibility
1 Day to 2 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Apr 5, 2023 · Synced Jul 21, 2026, 5:03 AM EDT
Completed Not applicable Interventional

AIMIGo 12L ECG Synthesis Software Pivotal Study for Arrythmia Detection

NCT06123130
View directory record Official record
Conditions
Arrhythmias, Cardiac, Atrial Fibrillation, Atrial Flutter, Bradycardia, Tachycardia
Interventions
Vectorcardiography (VECG)
Device
Lead sponsor
HeartBeam, Inc.
Industry
Eligibility
18 Years and older
Enrollment
198 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024
U.S. locations
5
States / cities
Atlanta, Georgia • Tucker, Georgia • New York, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 4, 2024 · Synced Jul 21, 2026, 5:03 AM EDT
Not yet recruiting Not applicable Interventional

Chronic Evaluation of Novel Pacemaker System

NCT06056817
View directory record Official record
Conditions
Ventricular Pacing With Rate Response, Bradycardia
Interventions
Calyan Pacemaker
Device
Lead sponsor
Calyan Technologies
Industry
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 17, 2026 · Synced Jul 21, 2026, 5:03 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Prophylactic Ephedrine and Combined Spinal Epidurals for Labor

NCT02062801
View directory record Official record
Conditions
Labor Pain
Interventions
Ephedrine, Placebo
Drug
Lead sponsor
Sharp HealthCare
Other
Eligibility
Female only
Enrollment
710 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jul 2, 2015 · Synced Jul 21, 2026, 5:03 AM EDT
Completed No phase listed Observational

Down Syndrome Autonomic Nervous System Induction Bradycardia

NCT05120531
View directory record Official record
Conditions
Down Syndrome, Bradycardia
Interventions
Monitoring patients undergoing surgery to look for association between ANS activity and bradycardia
Other
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
1 Month to 8 Years
Enrollment
195 participants
Timeline
2022 – 2023
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 14, 2023 · Synced Jul 21, 2026, 5:03 AM EDT
Completed Phase 4 Interventional Results available

Effectiveness of Pacemaker With Closed Loop Stimulation Compared to Pacemakers With and Without Standard Rate Response

NCT00355797
View directory record Official record
Conditions
Bradycardia
Interventions
Closed Loop Stimulation (CLS), Standard Rate Adaptive (R) Technology, Non-rate adaptive (DDD) pacing
Device
Lead sponsor
Biotronik, Inc.
Industry
Eligibility
18 Years and older
Enrollment
1,491 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
99
States / cities
Albertville, Alabama • Gadsden, Alabama • Jasper, Alabama + 82 more
Source: ClinicalTrials.gov public record
Updated Dec 19, 2012 · Synced Jul 21, 2026, 5:03 AM EDT
Completed No phase listed Observational

Pharmacokinetics of Understudied Drugs Administered to Children Per Standard of Care

NCT01431326
View directory record Official record
Conditions
Adenovirus, Anesthesia, Anxiety, Anxiolysis, Autism, Autistic Disorder, Bacterial Meningitis, Bacterial Septicemia, Benzodiazepine, Bipolar Disorder, Bone and Joint Infections, Central Nervous System Infections, Convulsions, Cytomegalovirus Retinitis, Early-onset Schizophrenia Spectrum Disorders, Epilepsy, General Anesthesia, Gynecologic Infections, Herpes Simplex Virus, Infantile Hemangioma, Infection, Inflammation, Inflammatory Conditions, Intra-abdominal Infections, Lower Respiratory Tract Infections, Migraines, Pain, Pneumonia, Schizophrenia, Sedation, Seizures, Skeletal Muscle Spasms, Skin and Skin-structure Infections, Treatment-resistant Schizophrenia, Urinary Tract Infections, Withdrawal, Sepsis, Gram-negative Infection, Bradycardia, Cardiac Arrest, Cardiac Arrhythmia, Staphylococcal Infections, Nosocomial Pneumonia, Neuromuscular Blockade, Methicillin Resistant Staphylococcus Aureus, Endocarditis, Neutropenia, Headache, Fibrinolytic Bleeding, Pulmonary Arterial Hypertension, CMV Retinitis, Hypertension, Chronic Kidney Diseases, Hyperaldosteronism, Hypokalemia, Heart Failure, Hemophilia, Heavy Menstrual Bleeding, Insomnia
Interventions
The POPS study is collecting PK data on children prescribed the following drugs of interest per standard of care:
Drug
Lead sponsor
Daniel Benjamin
Other
Eligibility
Up to 21 Years
Enrollment
3,520 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2019
U.S. locations
43
States / cities
Anchorage, Alaska • Little Rock, Arkansas • La Jolla, California + 37 more
Source: ClinicalTrials.gov public record
Updated Sep 5, 2023 · Synced Jul 21, 2026, 5:03 AM EDT
Completed No phase listed Observational

Bradycardia Recognition and Detection in Young Infants Part-I

NCT05774470
View directory record Official record
Conditions
Neonatal Bradycardia, Hypoxemia of Newborn
Interventions
Owlet OSS 3.0
Device
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
1 Day to 365 Days
Enrollment
70 participants
Timeline
2023
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Mar 14, 2024 · Synced Jul 21, 2026, 5:03 AM EDT
Completed Not applicable Interventional Results available

ECG Belt to Assess Electrical Synchronization

NCT04583709
View directory record Official record
Conditions
Bradycardia, Heart Failure
Interventions
ECG Belt
Device
Lead sponsor
Pugazhendhi Vijayaraman
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
Wilkes-Barre, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 21, 2022 · Synced Jul 21, 2026, 5:03 AM EDT
Completed Not applicable Interventional

Study for Atrial Fibrillation Reduction (SAFARI)

NCT00267137
View directory record Official record
Conditions
Atrial Fibrillation, Bradycardia
Interventions
Pacing Algorithms
Device
Lead sponsor
Medtronic Cardiac Ablation Solutions
Industry
Eligibility
Not listed
Enrollment
540 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2006
U.S. locations
34
States / cities
Yuma, Arizona • Fayetteville, Arkansas • Fort Smith, Arkansas + 31 more
Source: ClinicalTrials.gov public record
Updated Feb 12, 2025 · Synced Jul 21, 2026, 5:03 AM EDT
Completed No phase listed Observational Results available

Patient Preferences for Leadless Pacemakers

NCT05327101
View directory record Official record
Conditions
Cardiac Rhythm Disorder, Bradycardia, Cardiac Pacemaker Artificial
Interventions
Patient Preference Survey
Other
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
117 participants
Timeline
2022 – 2023
U.S. locations
11
States / cities
Scottsdale, Arizona • Jonesboro, Arkansas • Little Rock, Arkansas + 8 more
Source: ClinicalTrials.gov public record
Updated Feb 19, 2025 · Synced Jul 21, 2026, 5:03 AM EDT