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Showing 1–24 of 31 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Heart Block AV Clear all
Completed Phase 1 Interventional

Analysis of Adenosine on Sinus and Atrioventricular Nodal Conduction in the Pediatric Transplanted Heart

NCT02462941
View directory record Official record
Conditions
Sinus Bradycardia, Atrioventricular Block
Interventions
Adenosine, Cardiac catheterization
Drug · Procedure
Lead sponsor
Columbia University
Other
Eligibility
6 Months to 25 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 7, 2018 · Synced Jul 22, 2026, 10:17 AM EDT
Completed No phase listed Observational

HBP Device EGM Data Collection

NCT03564860
View directory record Official record
Conditions
Sick Sinus Syndrome, AV Block, Heart Failure
Interventions
Device data collection
Procedure
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
3
States / cities
Huntsville, Alabama • Sayre, Pennsylvania • Greenville, South Carolina
Source: ClinicalTrials.gov public record
Updated Oct 7, 2020 · Synced Jul 22, 2026, 10:17 AM EDT
Recruiting Not applicable Interventional

BIOTRONIK Investigation of the LivIQ Leadless Pacemaker System

NCT07118358
View directory record Official record
Conditions
Leadless Pacemaker, Bradycardia, AV Block, Cardiac Rhythm Disorder
Interventions
LivIQ Leadless Pacemaker System
Device
Lead sponsor
Biotronik, Inc.
Industry
Eligibility
18 Years and older
Enrollment
325 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
5
States / cities
Ypsilanti, Michigan • New York, New York • Winston-Salem, North Carolina + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Jul 22, 2026, 10:17 AM EDT
Completed No phase listed Observational

Natural Evolution of AV Conduction Disorders in Patients Implanted With Cardiac Pacemakers

NCT00531037
View directory record Official record
Conditions
Patients Implanted With a Pacemaker
Interventions
Not listed
Lead sponsor
LivaNova
Industry
Eligibility
18 Years and older
Enrollment
1,440 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
7
States / cities
Birmingham, Alabama • Sheffield, Alabama • Mesa, Arizona + 4 more
Source: ClinicalTrials.gov public record
Updated Nov 13, 2017 · Synced Jul 22, 2026, 10:17 AM EDT
Recruiting No phase listed Observational

Cardioneuroablation for Recurrent Vasovagal Syncope and Bradyarrhythmias: The CNA-FWRD Registry

NCT06166277
View directory record Official record
Conditions
Vasovagal Syncope, AV Block-2Nd Degree-Type 1, Sinus Pause
Interventions
Ablation procedure
Procedure
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years to 60 Years
Enrollment
300 participants
Timeline
2024 – 2027
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 17, 2025 · Synced Jul 22, 2026, 10:17 AM EDT
Terminated Not applicable Interventional

Implementation of a Protocol Utilizing Adaptive CRT in a Normal AV Conduction, CRT Non-Response Population at Generator Replacement

NCT03305393
View directory record Official record
Conditions
Heart Failure
Interventions
Adaptiv CRT
Device
Lead sponsor
Stern Cardiovascular Foundation, Inc.
Industry
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Germantown, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 18, 2019 · Synced Jul 22, 2026, 10:17 AM EDT
Completed Phase 4 Interventional

Prevention of Atrial Arrhythmia in Patients Without Atrioventricular (AV) Conduction Disease

NCT01170611
View directory record Official record
Conditions
Sinus Node Dysfunction, Brady Tachy Syndrome
Interventions
PACEMAKER SYMPHONY 2550
Device
Lead sponsor
LivaNova
Industry
Eligibility
18 Years and older
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
10
States / cities
Birmingham, Alabama • Mesa, Arizona • Los Angeles, California + 7 more
Source: ClinicalTrials.gov public record
Updated Jul 26, 2010 · Synced Jul 22, 2026, 10:17 AM EDT
Recruiting No phase listed Observational

AVEIR DR Coverage With Evidence Development (CED) Study

NCT05932602
View directory record Official record
Conditions
Cardiac Pacemaker, Arrythmia, Bradycardia
Interventions
Aveir DR Leadless Pacemaker System, Dual Chamber Transvenous Pacemaker
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
2,812 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2030
U.S. locations
1
States / cities
Sylmar, California
Source: ClinicalTrials.gov public record
Updated Apr 5, 2025 · Synced Jul 22, 2026, 10:17 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 22, 2026, 10:17 AM EDT
Terminated Not applicable Interventional Results available

Left Bundle Area Versus Selective His Bundle Pacing

NCT04093414
View directory record Official record
Conditions
Bradycardia, Sinus Node Dysfunction, Atrioventricular Block
Interventions
Select Secure pacing lead
Device
Lead sponsor
David Haines, MD
Other
Eligibility
19 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
2
States / cities
Royal Oak, Michigan • Troy, Michigan
Source: ClinicalTrials.gov public record
Updated Aug 16, 2022 · Synced Jul 22, 2026, 10:17 AM EDT
Completed Not applicable Interventional Results available

Aveir DR i2i Study

NCT05252702
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated May 26, 2026 · Synced Jul 22, 2026, 10:17 AM EDT
Completed Phase 4 Interventional Results available

XIENCE V® USA Dual Antiplatelet Therapy (DAPT) Cohort

NCT01106534
View directory record Official record
Conditions
Chronic Total Occlusion of Coronary Artery, Vascular Disease, Myocardial Ischemia, Coronary Artery Stenosis, Coronary Disease, Coronary Artery Disease, Coronary Restenosis
Interventions
placebo + aspirin, clopidogrel + aspirin OR prasugrel + aspirin, XIENCE V Everolimus Eluting Coronary Stent System (XIENCE V EECSS)
Drug · Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
870 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2015
U.S. locations
144
States / cities
Birmingham, Alabama • Fairhope, Alabama • Scottsdale, Arizona + 126 more
Source: ClinicalTrials.gov public record
Updated Nov 13, 2023 · Synced Jul 22, 2026, 10:17 AM EDT
Completed Not applicable Interventional

The Fluoroless-CSP Trial Using Electroanatomic Mapping

NCT03903107
View directory record Official record
Conditions
Sinus Node Dysfunction, Heart Block AV, LBBB, Heart Failure, Systolic
Interventions
Conventional fluoroscopy guided Conduction System Pacing(CSP), Electroanatomic Mapping (Fluoroless) guided Conduction System Pacing(CSP)
Procedure
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 27, 2025 · Synced Jul 22, 2026, 10:17 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Dexamethasone Treatment for Congenital Heart Block (CHB) in Newborns With Lupus

NCT00007358
View directory record Official record
Conditions
Congenital Heart Block, Neonatal Lupus, Atrioventricular Nodal Dysfunction, Myocardial Injury
Interventions
Dexamethasone or other corticosteroid
Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
16 Years to 50 Years · Female only
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2008
U.S. locations
4
States / cities
New Haven, Connecticut • Livingston, New Jersey • New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 10, 2016 · Synced Jul 22, 2026, 10:17 AM EDT
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 22, 2026, 10:17 AM EDT
Active, not recruiting No phase listed Observational

Aveir VR Real-World Evidence Post-Approval Study

NCT05270499
View directory record Official record
Conditions
Cardiac Pacemaker, Arrythmia, Bradycardia
Interventions
Aveir VR Leadless Pacemaker System
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
3,427 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2034
U.S. locations
1
States / cities
Sylmar, California
Source: ClinicalTrials.gov public record
Updated May 19, 2026 · Synced Jul 22, 2026, 10:17 AM 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 Jul 22, 2026, 10:17 AM EDT
Completed No phase listed Observational

Pacemaker Utilization and Ventricular Pacing in Patients Undergoing Trans-catheter Aortic Valve Replacement (TAVR)

NCT02994667
View directory record Official record
Conditions
Ventricular Flutter, Atrioventricular Block, Intraventricular Conduction Delay, Bundle Branch Block, Pacemaker Implantation
Interventions
Permanent Pacemaker Placement
Device
Lead sponsor
Baylor Research Institute
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Plano, Texas
Source: ClinicalTrials.gov public record
Updated Jan 21, 2020 · Synced Jul 22, 2026, 10:17 AM EDT
Recruiting Not applicable Interventional

Left vs Left Randomized Clinical Trial

NCT05650658
View directory record Official record
Conditions
Heart Failure, Heart Failure With Reduced Ejection Fraction, AV Block, LBBB, RBBB, Intraventricular Conduction Delay, Pacing-Induced Cardiomyopathy
Interventions
His/LBBP, BiVP
Device
Lead sponsor
Baylor College of Medicine
Other
Eligibility
18 Years and older
Enrollment
2,136 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2029
U.S. locations
57
States / cities
Gilbert, Arizona • Tucson, Arizona • Little Rock, Arkansas + 46 more
Source: ClinicalTrials.gov public record
Updated Oct 1, 2025 · Synced Jul 22, 2026, 10:17 AM EDT
Active, not recruiting Not applicable Interventional

Comparison of Left Bundle Branch Area Versus Right Ventricular Septal Pacing in Patients With High-degree Conduction Disease After Transcatheter Aortic Valve Replacement (Left Bundle BRAVE)

NCT05541679
View directory record Official record
Conditions
Complete Heart Block, High Degree Second Degree Atrioventricular Block, Pacemaker-Induced Cardiomyopathy, Aortic Valve Stenosis
Interventions
Right ventricular septal pacing followed by left bundle branch area pacing, Left bundle branch area pacing followed by right ventricular septal pacing
Device
Lead sponsor
Main Line Health
Other
Eligibility
18 Years and older
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
4
States / cities
Overland Park, Kansas • Ridgewood, New Jersey • Philadelphia, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Dec 9, 2024 · Synced Jul 22, 2026, 10:17 AM EDT
Completed Not applicable Interventional Results available

Micra Atrial TRacking Using A Ventricular AccELerometer 2

NCT03752151
View directory record Official record
Conditions
Atrioventricular Conduction Block
Interventions
MARVEL 2 Algorithm Monitor Mode then Adaptive Mode
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
5
States / cities
Jacksonville, Florida • Miami, Florida • Manhasset, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 3, 2020 · Synced Jul 22, 2026, 10:17 AM EDT
Completed Not applicable Interventional Results available

BIOTRONIK Conduction System Pacing With the Solia Lead

NCT05251363
View directory record Official record
Conditions
Bradycardia, Atrioventricular Block, Left Bundle-Branch Block, Cardiomyopathies
Interventions
Solia S lead
Device
Lead sponsor
Biotronik, Inc.
Industry
Eligibility
18 Years and older
Enrollment
194 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
14
States / cities
Phoenix, Arizona • Ventura, California • Washington D.C., District of Columbia + 9 more
Source: ClinicalTrials.gov public record
Updated Mar 17, 2025 · Synced Jul 22, 2026, 10:17 AM EDT
Completed Not applicable Interventional Results available

Biventricular Versus Right Ventricular Pacing in Heart Failure Patients With Atrioventricular Block (BLOCK HF)

NCT00267098
View directory record Official record
Conditions
Atrioventricular Block, Heart Diseases
Interventions
Cardiac Resynchronization Therapy (CRT)
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
918 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2013
U.S. locations
51
States / cities
Anchorage, Alaska • Peoria, Arizona • Little Rock, Arkansas + 48 more
Source: ClinicalTrials.gov public record
Updated Mar 25, 2014 · Synced Jul 22, 2026, 10:17 AM EDT
Withdrawn Phase 4 Interventional Accepts healthy volunteers

Micra AV Tracking During Exercise Testing

NCT05966168
View directory record Official record
Conditions
Heart Block AV
Interventions
Medtronic Micra AV Device
Device
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 16, 2024 · Synced Jul 22, 2026, 10:17 AM EDT