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ClinicalTrials.gov public records Last synced Sep 17, 2026, 9:36 PM EDT

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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Heart Rate Low Clear all
Completed Not applicable Interventional

Accuracy of the Apple Watch Series 4 for Detection of Heart Rhythm: A Pilot Study

NCT03798613
View directory record Official record
Conditions
Heart Rate Fast, Heart Rate Low
Interventions
Apple Watch 4 Series Device, Continuous Telemetry Monitor
Device
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 8, 2019 · Synced Sep 17, 2026, 9:36 PM EDT
Completed No phase listed Observational

VIBRANT Registry: Value of Information Based From Pacemaker Recordings and New Technologies

NCT00294034
View directory record Official record
Conditions
Pacemaker, Bradycardia
Interventions
Pacemaker
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
Not listed
Enrollment
950 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2006
U.S. locations
27
States / cities
Hot Springs, Arkansas • Little Rock, Arkansas • North Little Rock, Arkansas + 24 more
Source: ClinicalTrials.gov public record
Updated Mar 26, 2007 · Synced Sep 17, 2026, 9:36 PM EDT
Completed Not applicable Interventional Results available

AV Delay Optimization vs. Intrinsic Conduction in Pacemaker Patients With Long PR Intervals

NCT02154750
View directory record Official record
Conditions
Atrioventricular Block, Sick Sinus Syndrome, Symptomatic Bradycardia, Cardiac Arrhythmia
Interventions
Long, fixed AV delay, Short, optimized AV delay
Device
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2021
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jul 23, 2025 · Synced Sep 17, 2026, 9:36 PM EDT
Completed No phase listed Observational Results available

LBBAP Data Collection Registry

NCT05887323
View directory record Official record
Conditions
Bradycardia, Sinus Node Dysfunction, Heart Block, Syncope, Cardiomyopathies, Heart Failure
Interventions
Implantation of the Tendril 2088 lead in the LBBA
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
221 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
5
States / cities
Jonesboro, Arkansas • Rancho Mirage, California • Pensacola, Florida + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 7, 2024 · Synced Sep 17, 2026, 9:36 PM 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 Sep 17, 2026, 9:36 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Oxytocin and Fetal Heart Rate Changes

NCT03232918
View directory record Official record
Conditions
Fetal Bradycardia Complicating Labor and Delivery, Fetal Bradycardia During Labor, Fetal Heart Rate or Rhythm Abnormality Affecting Fetus
Interventions
Half dose Oxytocin
Drug
Lead sponsor
Unyime Ituk
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
730 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2025
U.S. locations
2
States / cities
Iowa City, Iowa • Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jun 3, 2025 · Synced Sep 17, 2026, 9:36 PM EDT
Completed No phase listed Observational Results available

INGEVITY+ Active Fixation Pace/Sense Lead Clinical Study

NCT04346537
View directory record Official record
Conditions
Bradycardia
Interventions
INGEVITY+™ Pace/Sense Lead
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
109 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
13
States / cities
Huntsville, Alabama • Jonesboro, Arkansas • Torrance, California + 10 more
Source: ClinicalTrials.gov public record
Updated Jul 13, 2022 · Synced Sep 17, 2026, 9:36 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

AVEIR Remote Care System Non-Significant Risk Study

NCT06542133
View directory record Official record
Conditions
Cardiac Pacemaker, Cardiac Rhythm Disorder, Bradycardia
Interventions
AVEIR remote care system
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years to 100 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
3
States / cities
Jonesboro, Arkansas • Little Rock, Arkansas • Newport Beach, California
Source: ClinicalTrials.gov public record
Updated Apr 9, 2025 · Synced Sep 17, 2026, 9:36 PM 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 Sep 17, 2026, 9:36 PM EDT
Recruiting Not applicable Interventional

Low Level Tragus Stimulation in Acute Decompensated Heart Failure

NCT02898181
View directory record Official record
Conditions
Acute Decompensated Heart Failure
Interventions
Neuromodulation
Device
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 80 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2026
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated May 27, 2025 · Synced Sep 17, 2026, 9:36 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

The Alaska Oculocardiac Reflex Study

NCT04353960
View directory record Official record
Conditions
Bradycardia, Strabismus
Interventions
electrocardiograph
Diagnostic Test
Lead sponsor
Alaska Blind Child Discovery
Other
Eligibility
1 Month to 100 Years
Enrollment
4,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1992 – 2035
U.S. locations
1
States / cities
Anchorage, Alaska
Source: ClinicalTrials.gov public record
Updated Jul 30, 2024 · Synced Sep 17, 2026, 9:36 PM EDT
Completed Not applicable Interventional

Evaluation of a Test Algorithm for Use to Analyze ECG Data Collected From a Test Device of a 24-hour Simulated Use Period

NCT07188129
View directory record Official record
Conditions
Atrial Fibrillation (AF), Tachycardia, Bradycardia, PVC - Premature Ventricular Contraction, Premature Atrial Contraction
Interventions
Test Algorithm and Test Device
Device
Lead sponsor
Zywie, Inc.
Industry
Eligibility
18 Years and older
Enrollment
153 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
Bozeman, Montana
Source: ClinicalTrials.gov public record
Updated Sep 22, 2025 · Synced Sep 17, 2026, 9:36 PM EDT
Completed No phase listed Observational

Common Sensing and Right Ventricular Automatic Capture (COGNATE)

NCT01030705
View directory record Official record
Conditions
Bradycardia, Chronotropic Incompetence
Interventions
Not listed
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
5
States / cities
Cedar Rapids, Iowa • Lincoln, Nebraska • Pittsburgh, Pennsylvania + 2 more
Source: ClinicalTrials.gov public record
Updated Sep 28, 2011 · Synced Sep 17, 2026, 9:36 PM EDT
Completed Not applicable Interventional Results available

The LEADLESS II IDE Study for the Nanostim Leadless Pacemaker

NCT02030418
View directory record Official record
Conditions
Bradycardia
Interventions
Leadless Pacemaker
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
952 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2022
U.S. locations
50
States / cities
Birmingham, Alabama • Huntsville, Alabama • La Jolla, California + 43 more
Source: ClinicalTrials.gov public record
Updated Jul 8, 2025 · Synced Sep 17, 2026, 9:36 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Does Style Matter: Comparison of Moderate- to Low-intensity Styles of Yoga

NCT07638267
View directory record Official record
Conditions
Insomnia, Health Adult Subjects, Insomnia Disorder, Heart Health Markers
Interventions
Vinyasa yoga, Gentle yoga, Non-active control
Behavioral · Other
Lead sponsor
Caitlin Cheruka
Other
Eligibility
18 Years to 40 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Aug 12, 2026 · Synced Sep 17, 2026, 9:36 PM EDT
Completed Not applicable Interventional

Prematurity Related Ventilatory Control (PRE-VENT) - Specific Aim 3

NCT03333174
View directory record Official record
Conditions
Infant,Premature
Interventions
Cardiorespiratory monitoring
Diagnostic Test
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
1 Day to 98 Days
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Sep 20, 2021 · Synced Sep 17, 2026, 9:36 PM EDT
Completed No phase listed Observational Results available

BlueSync Field Evaluation

NCT03518658
View directory record Official record
Conditions
Bradycardia
Interventions
Evaluation Group, Control Group (Historical)
Other
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
257 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
11
States / cities
Palo Alto, California • Hartford, Connecticut • Daytona Beach, Florida + 8 more
Source: ClinicalTrials.gov public record
Updated May 5, 2021 · Synced Sep 17, 2026, 9:36 PM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Detection and Classification of Cardiac Rhythm and Atrial Fibrillation Using a Finger-worn Ring

NCT06892938
View directory record Official record
Conditions
Atrial Fibrillation (AF), Arrhythmias Cardiac, Tachycardia, Palpitations, Bradycardia
Interventions
Atrial Fibrillation Identification
Diagnostic Test
Lead sponsor
Everbeat
Industry
Eligibility
18 Years and older
Enrollment
232 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
3
States / cities
La Jolla, California • Baton Rouge, Louisiana • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 26, 2025 · Synced Sep 17, 2026, 9:36 PM EDT
Recruiting No phase listed Observational

Aveir DR Real-World Evidence Post-Approval Study

NCT05935007
View directory record Official record
Conditions
Cardiac Pacemaker, Arrythmia, Bradycardia
Interventions
Aveir DR Leadless Pacemaker System
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
1,805 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2030
U.S. locations
1
States / cities
Sylmar, California
Source: ClinicalTrials.gov public record
Updated May 19, 2026 · Synced Sep 17, 2026, 9:36 PM 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 Sep 17, 2026, 9:36 PM EDT
Recruiting No phase listed Observational

Product Performance Report: Evaluate Long-term Reliability & Performance of Medtronic Marketed Cardiac Therapy Products

NCT00271180
View directory record Official record
Conditions
Arrhythmia, Bradycardia, Heart Failure, Sinus Tachycardia
Interventions
Device
Device
Lead sponsor
Medtronic
Industry
Eligibility
Not listed
Enrollment
20,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1983 – 2040
U.S. locations
113
States / cities
Birmingham, Alabama • Anchorage, Alaska • Chandler, Arizona + 110 more
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Sep 17, 2026, 9:36 PM EDT
Terminated No phase listed Observational Results available

OMNI Study--Assessing Therapies in Medtronic Pacemaker, Defibrillator, and Cardiac Resynchronization Therapy Devices.

NCT00277524
View directory record Official record
Conditions
Tachycardia, Ventricular, Heart Failure, Congestive, Ventricular Fibrillation, Ventricular Dysfunction, Bradycardia
Interventions
Not listed
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
3,032 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
113
States / cities
Tucson, Arizona • Little Rock, Arkansas • Fresno, California + 107 more
Source: ClinicalTrials.gov public record
Updated Aug 27, 2013 · Synced Sep 17, 2026, 9:36 PM EDT
Not listed No phase listed Observational

microEEG for Neonatal Apnea, Bradycardia and Desaturation

NCT02436616
View directory record Official record
Conditions
Apnea, Bradycardia, Premature Birth, Seizures
Interventions
microEEG
Device
Lead sponsor
Bio-Signal Group Corp.
Industry
Eligibility
Up to 30 Days
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
2
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated Feb 28, 2016 · Synced Sep 17, 2026, 9:36 PM EDT
Completed No phase listed Observational

SureScan Post-Approval Study

NCT01299675
View directory record Official record
Conditions
Bradycardia
Interventions
Not listed
Lead sponsor
Medtronic
Industry
Eligibility
Not listed
Enrollment
2,483 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
59
States / cities
Little Rock, Arkansas • Bakersfield, California • Chula Vista, California + 56 more
Source: ClinicalTrials.gov public record
Updated Apr 26, 2018 · Synced Sep 17, 2026, 9:36 PM EDT