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ClinicalTrials.gov public records Last synced Oct 25, 2026, 1:08 AM EDT

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Showing 49–72 of 370 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Conduction Defects Clear all
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 11, 2017 · Synced Oct 25, 2026, 1:08 AM EDT
Terminated Not applicable Interventional Results available

Pediatric Lead Extractability and Survival Evaluation (PLEASE)

NCT00335036
View directory record Official record
Conditions
Ventricular Tachycardia, Ventricular Fibrillation, Cardiomyopathy, Long QT Syndrome, Congenital Heart Disease
Interventions
ICD lead implant, Thin leads
Device
Lead sponsor
Charles Berul
Other
Eligibility
1 Year to 55 Years
Enrollment
748 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 19, 2026 · Synced Oct 25, 2026, 1:08 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Coffee and Real-time Atrial and Ventricular Ectopy

NCT03671759
View directory record Official record
Conditions
Premature Atrial Contractions, Premature Ventricular Contractions
Interventions
Start: On Caffeine, Start: Off Caffeine
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
108 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Oct 7, 2022 · Synced Oct 25, 2026, 1:08 AM EDT
Recruiting Not applicable Interventional

Continuous Versus Intermittent cARdiac Electrical moNitorinG

NCT04336644
View directory record Official record
Conditions
Torsades de Pointe Caused by Drug, Long QT Syndrome
Interventions
BodyGuardian Mini Plus
Device
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 30, 2025 · Synced Oct 25, 2026, 1:08 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Dietary Sodium's Effect on Urinary Sodium and Dopamine Excretion in Patients With Postural Tachycardia Syndrome

NCT01563107
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome
Interventions
Plasma Volume, Exercise Capacity Test - Bicycle, Posture Study
Radiation · Procedure
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2020
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 25, 2022 · Synced Oct 25, 2026, 1:08 AM EDT
Completed No phase listed Observational Results available

Physiologic Pacing Registry

NCT03719040
View directory record Official record
Conditions
Bradycardia, Sinus Node Dysfunction, Heart Block, Syncope, Cardiomyopathies, Ventricular Tachycardia, Heart Failure
Interventions
Physiologic pacing device implant
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years and older
Enrollment
870 participants
Timeline
2018 – 2021
U.S. locations
26
States / cities
Huntsville, Alabama • Burlingame, California • San Diego, California + 22 more
Source: ClinicalTrials.gov public record
Updated Aug 19, 2024 · Synced Oct 25, 2026, 1:08 AM EDT
Active, not recruiting Not applicable Interventional

Intravenous (IV) Saline and Exercise in Postural Tachycardia Syndrome (POTS)

NCT01000350
View directory record Official record
Conditions
Postural Tachycardia Syndrome
Interventions
Saline, Placebo
Drug · Other
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2031
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 16, 2026 · Synced Oct 25, 2026, 1:08 AM EDT
Completed Phase 2 Interventional

Double Blind Placebo Controlled Dose Ranging Study of the Efficacy and Safety of SSR149744c 100 or 300 mg for the Prevention of ventrICular ARrhythmia-triggered Icd interventiOnS

NCT00232297
View directory record Official record
Conditions
Arrhythmia, Tachycardia, Ventricular, Ventricular Fibrillation
Interventions
SSR149744C
Drug
Lead sponsor
Sanofi
Industry
Eligibility
21 Years and older
Enrollment
153 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
Bridgewater, New Jersey
Source: ClinicalTrials.gov public record
Updated May 8, 2012 · Synced Oct 25, 2026, 1:08 AM EDT
Enrolling by invitation Not applicable Interventional

Computational Cardiac Imaging Analysis to Guide Ventricular Tachycardia Ablation Procedures (AI-VT)

NCT06964152
View directory record Official record
Conditions
Ventricular Tachycardia (VT), Premature Ventricular Contraction (PVC), Ventricular Fibrillation
Interventions
Computational electrocardiography and cardiac computed tomography mapping
Diagnostic Test
Lead sponsor
University of California, San Diego
Other
Eligibility
21 Years to 90 Years
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2034
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated May 9, 2025 · Synced Oct 25, 2026, 1:08 AM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

Race Difference Moxifloxacin-induced QT Prolongation Between Healthy Chinese and Caucasian Volunteers

NCT02119091
View directory record Official record
Conditions
Cardiac Toxicity
Interventions
Moxifloxacin
Drug
Lead sponsor
Haiyan Li
Other
Eligibility
18 Years to 45 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
West Bend, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 21, 2014 · Synced Oct 25, 2026, 1:08 AM EDT
Active, not recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

Treatment of Orthostatic Intolerance

NCT00262470
View directory record Official record
Conditions
Tachycardia, Chronic Orthostatic Intolerance
Interventions
Acetazolamide, Atomoxetine, NO Drug, Clonidine, Entacapone, Entacapone & Propranolol, Atomoxetine & Propranolol, Indomethacin, Mecamylamine, Isosorbide Dinitrate, Melatonin, Midodrine, Modafinil, Octreotide, Placebo, Propranolol, Modafinil & Propranolol, Sertraline, IV Saline, Drinking Water, Breathing Device, memantine, Abdominal binder
Drug · Other · Dietary Supplement + 3 more
Lead sponsor
Satish R. Raj
Other
Eligibility
18 Years to 70 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1997 – 2029
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 16, 2026 · Synced Oct 25, 2026, 1:08 AM EDT
Completed Not applicable Interventional Results available

S-ICD® System IDE Clinical Study

NCT01064076
View directory record Official record
Conditions
Tachycardia, Ventricular
Interventions
S-ICD System
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
330 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
28
States / cities
Scottsdale, Arizona • Los Angeles, California • Pasadena, California + 22 more
Source: ClinicalTrials.gov public record
Updated Mar 27, 2017 · Synced Oct 25, 2026, 1:08 AM EDT
Terminated Phase 3 Interventional Results available

Effect of Eleclazine on Shortening of the QT Interval, Safety, and Tolerability in Adults With Long QT Syndrome Type 3

NCT02300558
View directory record Official record
Conditions
Long QT Syndrome Type 3
Interventions
Eleclazine, Eleclazine placebo
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years to 70 Years
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
3
States / cities
Rochester, Minnesota • New York, New York • Rochester, New York
Source: ClinicalTrials.gov public record
Updated Jan 12, 2018 · Synced Oct 25, 2026, 1:08 AM EDT
Completed No phase listed Observational

Circulating Biomarkers and Ventricular Tachyarrhythmia

NCT01892462
View directory record Official record
Conditions
Cardiomyopathy, Ventricular Tachycardia, Ventricular Fibrillation
Interventions
Not listed
Lead sponsor
Ochsner Health System
Other
Eligibility
18 Years and older
Enrollment
220 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Apr 7, 2017 · Synced Oct 25, 2026, 1:08 AM EDT
Completed No phase listed Observational

INSIGHTS ICD Registry

NCT00279968
View directory record Official record
Conditions
Ventricular Tachycardia, Ventricular Fibrillation
Interventions
ICD
Device
Lead sponsor
Medtronic Cardiac Rhythm and Heart Failure
Industry
Eligibility
18 Years and older
Enrollment
1,326 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
44
States / cities
Little Rock, Arkansas • Fountain Valley, California • Poway, California + 41 more
Source: ClinicalTrials.gov public record
Updated Dec 28, 2007 · Synced Oct 25, 2026, 1:08 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Novel Approaches for Minimizing Drug-Induced QT Interval Lengthening

NCT04675788
View directory record Official record
Conditions
Long QT Syndrome, Abnormalities, Drug-Induced
Interventions
Progesterone, Ibutilide, Testosterone, Placebo
Drug
Lead sponsor
Indiana University
Other
Eligibility
50 Years to 99 Years
Enrollment
73 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
3
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Oct 20, 2026 · Synced Oct 25, 2026, 1:08 AM EDT
Completed No phase listed Observational Results available

Verification of Prediction Algorithm

NCT02863666
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated May 13, 2024 · Synced Oct 25, 2026, 1:08 AM EDT
Terminated Phase 4 Interventional Results available

Phenylephrine Versus Norepinephrine for Septic Shock in Critically Ill Patients

NCT02203630
View directory record Official record
Conditions
Septic Shock, Sepsis, Shock, Tachycardia, Arrhythmia
Interventions
Phenylephrine, Norepinephrine
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jun 13, 2018 · Synced Oct 25, 2026, 1:08 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 14, 2017 · Synced Oct 25, 2026, 1:08 AM EDT
Completed Not applicable Interventional Results available

Percutaneous Hemodynamic Support With Impella 2.5 During Scar-related Ventricular Tachycardia Ablation

NCT01294267
View directory record Official record
Conditions
Ventricular Tachycardia
Interventions
Circulatory Support System
Device
Lead sponsor
Vivek Reddy
Other
Eligibility
18 Years to 90 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 14, 2018 · Synced Oct 25, 2026, 1:08 AM EDT
Completed Not applicable Interventional

Sustained Auricular Nerve Stimulation for PVC Suppression

NCT07093034
View directory record Official record
Conditions
Premature Ventricular Complexes, PVC - Premature Ventricular Contraction, Auricular Vagus Nerve Stimulation
Interventions
Extended nocturnal use of auricular vagus nerve stimulator device
Device
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Aug 7, 2026 · Synced Oct 25, 2026, 1:08 AM EDT
Completed No phase listed Observational

Precision Event Monitoring for Patients With Heart Failure Using HeartLogic

NCT03579641
View directory record Official record
Conditions
Heart Failure, Defibrillators, Implantable, Monitoring, Physiologic, Cardiac Resynchronization Therapy, Cardiovascular Disease, Heart Disease
Interventions
HeartLogic Sensors
Device
Lead sponsor
Boston Scientific Corporation
Industry
Eligibility
18 Years and older
Enrollment
2,184 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
56
States / cities
Birmingham, Alabama • Jonesboro, Arkansas • Little Rock, Arkansas + 48 more
Source: ClinicalTrials.gov public record
Updated Oct 25, 2022 · Synced Oct 25, 2026, 1:08 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Reducing the Risk of Drug-Induced QT Interval Lengthening in Women

NCT03834883
View directory record Official record
Conditions
Long QT Syndrome, Abnormalities, Drug-Induced
Interventions
Progesterone, Ibutilide
Drug
Lead sponsor
Indiana University
Other
Eligibility
21 Years and older · Female only
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2024
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Jul 1, 2025 · Synced Oct 25, 2026, 1:08 AM EDT
Completed No phase listed Observational

Assert-IQ Implantable Cardiac Monitor (ICM) Post Market Study

NCT06172699
View directory record Official record
Conditions
Atrial Fibrillation Paroxysmal, Atrial Fibrillation, Persistent, Cardiac Arrhythmia, Ablation
Interventions
Holter monitoring in patients who have been successfully implanted with an Abbott Assert-IQ ICM device
Device
Lead sponsor
Abbott Medical Devices
Industry
Eligibility
18 Years to 100 Years
Enrollment
151 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
11
States / cities
San Diego, California • Orlando, Florida • Overland Park, Kansas + 8 more
Source: ClinicalTrials.gov public record
Updated May 13, 2026 · Synced Oct 25, 2026, 1:08 AM EDT