Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Jun 26, 2026, 7:18 AM EDT

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Showing 1–24 of 107 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
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
Conditions
Cardiac Rhythm Disorder, Bradycardia
Interventions
Aveir VR Leadless Pacemaker System
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
1,276 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
38
States / cities
Birmingham, Alabama • Huntsville, Alabama • Scottsdale, Arizona + 32 more
Conditions
Bradycardia, Heart Failure, Ventricular Dysfunction
Interventions
Ultra High Frequency Electrocardiogram (UHF-ECG)
Device
Lead sponsor
VDI Technologies
Industry
Eligibility
18 Years and older
Enrollment
360 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
7
States / cities
Avondale, Arizona • Mesa, Arizona • Chicago, Illinois + 4 more
Completed Not applicable Interventional Results available

The LEADLESS II IDE Study for the Nanostim Leadless Pacemaker

NCT02030418
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
Not yet recruiting Not applicable Interventional

Chronic Evaluation of Novel Pacemaker System

NCT06056817
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
Not listed Not applicable Interventional Accepts healthy volunteers

Study of Erythromycin in GER-Associated Apnea of the Newborn

NCT01825473
Conditions
Gastroesophageal Reflux, Apnea, Bradycardia
Interventions
Erythromycin, Multi-channel intra-luminal impedance (MII) pH monitoring, Placebo (D5W)
Drug · Device
Lead sponsor
University of Virginia
Other
Eligibility
14 Days and older
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Charlottesville, Virginia
Conditions
Heart Block, Bradycardia, Tachycardia, Arrhythmia
Interventions
MP3
Device
Lead sponsor
Boston Children's Hospital
Other
Eligibility
4 Years to 55 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Boston, Massachusetts
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
Conditions
Arrhythmia, Bradycardia
Interventions
Not listed
Lead sponsor
Medtronic
Industry
Eligibility
Not listed
Enrollment
2,927 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2015
U.S. locations
110
States / cities
Birmingham, Alabama • Anchorage, Alaska • Gilbert, Arizona + 107 more
Completed Not applicable Interventional Results available

ImageReady(TM) MR Conditional Pacing System Clinical Study

NCT01781078
Conditions
Bradycardia, Sinus Node Dysfunction
Interventions
MRI, ImageReady System implant
Radiation · Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
363 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2019
U.S. locations
29
States / cities
Mesa, Arizona • Los Angeles, California • San Francisco, California + 26 more
Recruiting Phase 4 Interventional Accepts healthy volunteers

Oxytocin and Fetal Heart Rate Changes

NCT03232918
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
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
Conditions
Cardiogenic Shock, Bradycardia, Shock
Interventions
Backup Pacing Rate Change
Device
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Nashville, Tennessee
Completed Not applicable Interventional Results available

Aveir DR i2i Study

NCT05252702
Conditions
Cardiac Pacemaker, Artificial, Cardiac Rhythm Disorder, Bradycardia
Interventions
Aveir DR Leadless Pacemaker System
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
464 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
54
States / cities
Scottsdale, Arizona • Jonesboro, Arkansas • Little Rock, Arkansas + 44 more
Conditions
Bradycardia
Interventions
CARDIX-101A, CARDIX-101B, CARDIX-101C
Drug
Lead sponsor
Cardix Therapeutics LLC
Industry
Eligibility
18 Years to 80 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
San Diego, California
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
Completed No phase listed Observational Results available

Verification of Prediction Algorithm

NCT02863666
Conditions
Shortness of Breath Episode, Tachycardia, Bradycardia, Difficulty Breathing
Interventions
Not listed
Lead sponsor
Zoll Medical Corporation
Industry
Eligibility
18 Years and older
Enrollment
673 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
2
States / cities
Birmingham, Alabama • Royal Oak, Michigan
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
Conditions
Reversal of Neuromuscular Blockade
Interventions
Sugammadex 2 mg/kg, Sugammadex 4 mg/kg, Sugammadex 16 mg/kg, Neostigmine + Glycopyrrolate, Rocuronium, Vecuronium
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years and older
Enrollment
344 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
20
States / cities
Birmingham, Alabama • Tucson, Arizona • Loma Linda, California + 15 more
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
Completed No phase listed Observational Results available

BlueSync Field Evaluation

NCT03518658
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
Conditions
Bradycardia
Interventions
Intervention/treatment
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years to 100 Years
Enrollment
135 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Sylmar, California
Conditions
Arrhythmia, Bradycardia
Interventions
Pacemaker
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
Not listed
Enrollment
860 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
51
States / cities
Anchorage, Alabama • Mobile, Alabama • Fullerton, California + 48 more