Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results come from ClinicalTrials.gov. When the live registry is unavailable, a clearly labeled stored copy may be shown.

Clear filters

These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.

ClinicalTrials.gov public records Last synced Oct 26, 2026, 4:24 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–24 of 101 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Sympathetic Nervous System Clear all
Completed Phase 2 Interventional

Propranolol to Treat Fainting in Children With Sympathoadrenal Imbalance

NCT00093860
View directory record Official record
Conditions
Syncope
Interventions
Propranolol
Drug
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
Not listed
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Oct 26, 2026, 4:24 PM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Early Neurovascular Adaptations in Aging Women

NCT06520982
View directory record Official record
Conditions
Women, Sympathetic Nervous System, Aging, Blood Flow
Interventions
Norepinephrine, Isoproterenol, Acetylcholine, Nitroprusside, Estrogen
Drug
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
18 Years to 70 Years · Female only
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Nov 26, 2025 · Synced Oct 26, 2026, 4:24 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Sympathetic and Parasympathetic Responses to Specific Chiropractic Adjustments

NCT00632164
View directory record Official record
Conditions
Autonomic Nervous System
Interventions
Not listed
Lead sponsor
Sherman College of Straight Chiropractic
Other
Eligibility
25 Years to 55 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2008
U.S. locations
1
States / cities
Spartanburg, South Carolina
Source: ClinicalTrials.gov public record
Updated Mar 10, 2008 · Synced Oct 26, 2026, 4:24 PM EDT
Completed Phase 4 Interventional Results available

Bromocriptine-QR Therapy on Sympathetic Tone and Vascular Biology in Type 2 Diabetes Subjects

NCT02682901
View directory record Official record
Conditions
Diabetic Autonomic Neuropathy
Interventions
Cycloset, Placebo
Drug
Lead sponsor
Eastern Virginia Medical School
Other
Eligibility
30 Years to 80 Years
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Dec 10, 2021 · Synced Oct 26, 2026, 4:24 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Vascular Function and Uterine Fibroids

NCT02123069
View directory record Official record
Conditions
Leiomyoma
Interventions
Brachial artery catheter, Acetylcholine, Nitroprusside, Norepinephrine, Nitroprusside and phenylephrine
Device · Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
25 Years to 50 Years · Female only
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2018
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 2, 2018 · Synced Oct 26, 2026, 4:24 PM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

Role of Sympathetic Vasoconstriction on Insulin-Mediated Microvascular Recruitment and Glucose Uptake in Obesity

NCT03318094
View directory record Official record
Conditions
Insulin Resistance, Healthy, Obesity
Interventions
Phentolamine, Saline, Sodium Nitroprusside
Drug · Other
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 60 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2027
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 2, 2026 · Synced Oct 26, 2026, 4:24 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Glucose Levels as a Biomarker for Stress in Firefighters

NCT06899373
View directory record Official record
Conditions
Stress, Sympathetic Nervous System, Hypothalamic Pituitary Adrenal
Interventions
Continuous glucometer
Device
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Aug 25, 2026 · Synced Oct 26, 2026, 4:24 PM EDT
Completed Phase 4 Interventional Results available

Statin Therapy in Heart Failure: Potential Mechanisms of Benefit

NCT00233480
View directory record Official record
Conditions
Heart Failure, Congestive
Interventions
atorvastatin, placebo
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 20, 2020 · Synced Oct 26, 2026, 4:24 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Measurement of Autonomic Cardiovascular Integrity in Persons With SCI

NCT01758692
View directory record Official record
Conditions
Spinal Cord Injury
Interventions
Not listed
Lead sponsor
James J. Peters Veterans Affairs Medical Center
Federal
Eligibility
18 Years to 89 Years
Enrollment
177 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2021
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Jun 26, 2023 · Synced Oct 26, 2026, 4:24 PM EDT
Completed Phase 2 Interventional Results available

DASH After TBI Study: Decreasing Adrenergic or Sympathetic Hyperactivity After Traumatic Brain Injury

NCT01322048
View directory record Official record
Conditions
Brain Injuries, Craniocerebral Trauma, Trauma, Nervous System, Traumatic Brain Injury
Interventions
IV Propranolol and Per Tube Clonidine, Placebo
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
16 Years to 64 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 17, 2017 · Synced Oct 26, 2026, 4:24 PM EDT
Terminated No phase listed Observational

Clinical Autonomic Disorders: A Training Protocol

NCT02154009
View directory record Official record
Conditions
Posttraumatic Stress Disorder, Pseudopheochromocytoma, Healthy Volunteers, Neurocardiogenic Syncope, Postural Tachycardia Syndrome
Interventions
Not listed
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
2 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2021
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 8, 2021 · Synced Oct 26, 2026, 4:24 PM EDT
Not yet recruiting Not applicable Interventional

Noninvasive CA Monitoring Validation and Autonomic Modulation in Aneurysmal Subarachnoid Hemorrhage

NCT07577739
View directory record Official record
Conditions
Subarachnoid Hemorrhage, Aneurysmal, Delayed Cerebral Ischemia, Cerebral Vasospasm, Autonomic Nervous System Diseases
Interventions
Right-Sided Cervical Sympathetic Block at C6, Transcutaneous Auricular Vagal Nerve Stimulation (taVNS)
Procedure · Device
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2027 – 2030
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Oct 16, 2026 · Synced Oct 26, 2026, 4:24 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Positron Emission Tomography to Measure Pain and Pain Control

NCT00001307
View directory record Official record
Conditions
Healthy, Hyperalgesia, Pain, Peripheral Nervous System Disease
Interventions
Oxygen-15 Water, Capsaicin
Drug
Lead sponsor
National Institute of Dental and Craniofacial Research (NIDCR)
NIH
Eligibility
Not listed
Enrollment
273 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1992 – 2005
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Oct 26, 2026, 4:24 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Pathophysiology of Orthostatic Intolerance

NCT00608725
View directory record Official record
Conditions
Tachycardia, Postural Orthostatic Tachycardia Syndrome
Interventions
DAXOR, QSweat, Intrinsic Heart Rate
Radiation · Procedure · Drug
Lead sponsor
Satish R. Raj
Other
Eligibility
18 Years to 80 Years
Enrollment
260 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1996 – 2029
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 13, 2026 · Synced Oct 26, 2026, 4:24 PM EDT
Completed Phase 1 Interventional

Effect of Stellate Ganglion Block on ME/CFS

NCT05664711
View directory record Official record
Conditions
Encephalomyelitis, Myalgic, Chronic Fatigue Syndrome, Chronic Fatigue Disorder, Chronic Fatigue and Immune Dysfunction Syndrome, Myalgic Encephalomyelitis, Postviral Fatigue Syndrome, Systemic Exertion Intolerance Disease, Infectious Mononucleosis-Like Syndrome, Chronic, Chronic Fatigue-Fibromyalgia Syndrome
Interventions
Bupivacaine Injection
Drug
Lead sponsor
Neuroversion, Inc.
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Anchorage, Alaska
Source: ClinicalTrials.gov public record
Updated Dec 6, 2024 · Synced Oct 26, 2026, 4:24 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

A Longitudinal Examination of Aging With a Spinal Cord Injury: Cardiovascular, Cerebrovascular and Cognitive Consequences

NCT03023163
View directory record Official record
Conditions
Spinal Cord Injury
Interventions
Longitudinal
Other
Lead sponsor
James J. Peters Veterans Affairs Medical Center
Federal
Eligibility
28 Years to 75 Years
Enrollment
92 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2022
U.S. locations
1
States / cities
West Orange, New Jersey
Source: ClinicalTrials.gov public record
Updated Jun 26, 2023 · Synced Oct 26, 2026, 4:24 PM EDT
Withdrawn Phase 2 Interventional

18F-mFBG Expression in Neural Crest Tumors and Organs Innervated by the Sympathetic Nervous System

NCT06233903
View directory record Official record
Conditions
Neuroblastoma, Pheochromocytoma, Paraganglioma
Interventions
18F-mFBG
Drug
Lead sponsor
Innervate Radiopharmaceuticals LLC (Formerly: Illumina Radiopharmaceuticals LLC)
Industry
Eligibility
Not listed
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Jan 21, 2025 · Synced Oct 26, 2026, 4:24 PM EDT
Completed Phase 3 Interventional Results available

Safety of Intravenous Neridronic Acid in CRPS

NCT02972359
View directory record Official record
Conditions
Complex Regional Pain Syndrome
Interventions
Neridronic acid
Drug
Lead sponsor
Grünenthal GmbH
Industry
Eligibility
18 Years and older
Enrollment
580 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
42
States / cities
Phoenix, Arizona • Tucson, Arizona • Little Rock, Arkansas + 35 more
Source: ClinicalTrials.gov public record
Updated Nov 21, 2019 · Synced Oct 26, 2026, 4:24 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Impact of Insulin on Sympathetic Nervous System-mediated Peripheral Vasoconstriction

NCT05244694
View directory record Official record
Conditions
Vasoconstriction, Healthy, Insulin Resistance
Interventions
Insulin
Drug
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
18 Years to 45 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 17, 2023 · Synced Oct 26, 2026, 4:24 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Prevalence of Chapman Reflex Points in Medical Students and Their Association With Visceral Symptoms

NCT07691112
View directory record Official record
Conditions
Healthy, Autonomic Nervous System Diseases, Lymphatic Diseases, Somatic Dysfunction, Chapman Reflex Points
Interventions
Chapman Reflex Point Examination
Procedure
Lead sponsor
The Touro College and University System
Other
Eligibility
18 Years and older
Enrollment
101 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 8, 2026 · Synced Oct 26, 2026, 4:24 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Spinal Cord Stimulation for Restless Legs Syndrome

NCT03539081
View directory record Official record
Conditions
Restless Legs Syndrome, Neuropathic Pain
Interventions
Dual-energy X-ray absorptiometry Scan, Laboratory Measurements, Blood Flow Measurement, Continuous Blood Pressure, Partial pressure of oxygen, Microneurography, Anthropometric Measurements, John Hopkins Restless Legs Severity Scale, Continuous Blood Pressure Diary
Diagnostic Test · Other · Behavioral
Lead sponsor
Marshall Holland
Other
Eligibility
18 Years to 85 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Sep 21, 2023 · Synced Oct 26, 2026, 4:24 PM EDT
Completed No phase listed Observational

Evaluation and Diagnosis of People With Pain and Fatigue Syndromes

NCT00677157
View directory record Official record
Conditions
Fatigue
Interventions
Not listed
Lead sponsor
National Institute of Nursing Research (NINR)
NIH
Eligibility
18 Years and older
Enrollment
367 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2020
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 22, 2020 · Synced Oct 26, 2026, 4:24 PM EDT
Enrolling by invitation Phase 2 Interventional

Dexmedetomidine Sublingual Film for the Ambulatory Treatment of Hyperadrenergic Autonomic Crisis in Patients With Familial Dysautonomia

NCT06148311
View directory record Official record
Conditions
Familial Dysautonomia
Interventions
Matching placebo, Dexmedetomidine
Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
16 Years to 80 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 13, 2026 · Synced Oct 26, 2026, 4:24 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Intravenous Norepinephrine for Orthostatic Hypotension

NCT01285908
View directory record Official record
Conditions
Orthostatic Hypertension
Interventions
Intravenous Norepinephrine Infusion
Drug
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 10, 2014 · Synced Oct 26, 2026, 4:24 PM EDT