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ClinicalTrials.gov public records Last synced Oct 8, 2026, 10:12 AM EDT

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Showing 25–48 of 94 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Postural Orthostatic Tachycardia Syndrome Clear all
Recruiting Phase 2 Interventional

Restoring Iron Deficiency in POTS

NCT07197905
View directory record Official record
Conditions
POTS - Postural Orthostatic Tachycardia Syndrome
Interventions
Intravenous iron
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 11, 2025 · Synced Oct 8, 2026, 10:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Dietary Salt in Postural Tachycardia Syndrome

NCT01547117
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome
Interventions
Blood Volume, Total Blood Volume, Exercise Capacity Test - Bicycle, Posture Study
Radiation · Procedure
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 50 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2021
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Feb 22, 2022 · Synced Oct 8, 2026, 10:12 AM EDT
Completed Phase 2 Interventional Results available

The Exercise Response to Pharmacologic Cholinergic Stimulation in Myalgic Encephalomyelitis / Chronic Fatigue Syndrome

NCT03674541
View directory record Official record
Conditions
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome, Chronic Fatigue Syndrome, Myalgic Encephalomyelitis, Exercise Intolerance, Dysautonomia, Low Ventricular Filling Pressures (Preload Failure), Postural Orthostatic Tachycardia Syndrome, Orthostatic Hypotension, Fibromyalgia
Interventions
Pyridostigmine Bromide, Placebo
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 80 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 8, 2022 · Synced Oct 8, 2026, 10:12 AM EDT
Not yet recruiting No phase listed Observational Accepts healthy volunteers

The Precision Mito- Mito Map COMPASS Study

NCT07856121
View directory record Official record
Conditions
Mitochondrial Diseases, Myalgic Encephalomyelitis Chronic Fatigue Syndrome, Post-COVID-19 Condition, Postural Orthostatic Tachycardia Syndrome, Lyme Disease, Post-Treatment Lyme Disease Syndrome, Fibromyalgia, Cancer-Related Fatigue, Neuromuscular Diseases, Fatigue, POLG-Related Disorders
Interventions
Mito Map Energy Score and Home Functional Assessments
Other
Lead sponsor
AI Agent Vault, Inc. d/b/a Precision Mito
Industry
Eligibility
18 Years and older
Enrollment
400 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Fort Myers, Florida
Source: ClinicalTrials.gov public record
Updated Oct 2, 2026 · Synced Oct 8, 2026, 10:12 AM EDT
Not yet recruiting Not applicable Interventional

Ultrasound Guided Stellate Ganglion Block in Postural Tachycardia Syndrome

NCT06953661
View directory record Official record
Conditions
Postural Tachycardia Syndrome
Interventions
Stellate ganglion block, Sham injection of saline, Ropivacaine, Normal saline
Procedure · Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
2
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Oct 15, 2025 · Synced Oct 8, 2026, 10:12 AM EDT
Not yet recruiting Not applicable Interventional

Development and Validation of the Kansas City Cardiac Dysautonomia Questionnaire (KCDysQ)

NCT06672861
View directory record Official record
Conditions
Cardiac Dysautonomia
Interventions
Kansas City Cardiac Dysautonomia Questionnaire (KCDysQ)
Other
Lead sponsor
Kansas City Heart Rhythm Research Foundation
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
3
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Aug 28, 2025 · Synced Oct 8, 2026, 10:12 AM EDT
Active, not recruiting Early Phase 1 Interventional Accepts healthy volunteers

Autonomic Determinants of POTS - Pilot1

NCT04050410
View directory record Official record
Conditions
Postural Tachycardia Syndrome
Interventions
Moxonidine, Placebo
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 27, 2026 · Synced Oct 8, 2026, 10:12 AM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Sleep Actigraphy in Postural Tachycardia Syndrome (POTS)

NCT00692471
View directory record Official record
Conditions
Postural Tachycardia Syndrome, Orthostatic Intolerance, Sleep Disorders
Interventions
Actigraphy Watch (motion sensors) with light sensors - ActiWatch from Minimitter
Device
Lead sponsor
Satish R. Raj
Other
Eligibility
18 Years to 65 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2029
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 8, 2025 · Synced Oct 8, 2026, 10:12 AM EDT
Completed Not applicable Interventional

Vagus Nerve Stimulation in Treatment of Postural Orthostatic Tachycardia Syndrome

NCT03930914
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome
Interventions
Parasym (TM) Transcutaneous Electrical Nerve Stimulation (TENS) Device
Device
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 80 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Dec 18, 2023 · Synced Oct 8, 2026, 10:12 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Cognitive Dysfunction in Postural Tachycardia Syndrome

NCT01366963
View directory record Official record
Conditions
Postural Tachycardia Syndrome
Interventions
Seated Measurements, Standing Measurements, Self-Administered Surveys
Behavioral
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 60 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2015
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 17, 2016 · Synced Oct 8, 2026, 10:12 AM EDT
Completed No phase listed Observational

Head Circumference Growth in Children With Ehlers-Danlos Syndrome Who Develop Dysautonomia Later in Life

NCT01367977
View directory record Official record
Conditions
Ehlers Danlos Syndrome, External Hydrocephalus, Dysautonomia, Postural Orthostatic Tachycardia Syndrome, Venous Insufficiency
Interventions
Not listed
Lead sponsor
Genetic Disease Investigators
Other
Eligibility
5 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Colleyville, Texas
Source: ClinicalTrials.gov public record
Updated Feb 14, 2024 · Synced Oct 8, 2026, 10:12 AM EDT
Completed No phase listed Observational

EEG Characteristics in Youth POTS and/or Syncope

NCT02167412
View directory record Official record
Conditions
Syncope, Postural Tachycardia Syndrome, Orthostatic Intolerance
Interventions
Not listed
Lead sponsor
Nationwide Children's Hospital
Other
Eligibility
9 Years to 21 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 27, 2018 · Synced Oct 8, 2026, 10:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Adrenocorticotropic Hormone Stimulation in Postural Orthostatic Tachycardia Syndrome (POTS)

NCT01764711
View directory record Official record
Conditions
Postural Tachycardia Syndrome
Interventions
Cosyntropin administration
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 50 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2020
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 31, 2022 · Synced Oct 8, 2026, 10:12 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 8, 2026, 10:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Non-invasive Vagal Neurostimulation (nVNS) in Adolescents With Postural Orthostatic Tachycardia Syndrome (POTS)

NCT06268288
View directory record Official record
Conditions
Postural Tachycardia Syndrome, Autonomic Dysfunction, Postural Orthostatic Tachycardia Syndrome, POTS - Postural Orthostatic Tachycardia Syndrome
Interventions
GammaCore intervention, STEPS management protocol
Device · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
12 Years to 19 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
2
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 31, 2025 · Synced Oct 8, 2026, 10:12 AM 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 8, 2025 · Synced Oct 8, 2026, 10:12 AM 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 8, 2026, 10:12 AM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Assessment of Antibodies and Inflammatory Markers in Postural Tachycardia Syndrome

NCT02196376
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome
Interventions
History, Physical, blood draw, Questionnaires
Other · Behavioral
Lead sponsor
Vanderbilt University
Other
Eligibility
13 Years to 80 Years
Enrollment
212 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2029
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 10, 2025 · Synced Oct 8, 2026, 10:12 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Mechanisms of Vasovagal Syncope

NCT01791816
View directory record Official record
Conditions
Vasovagal Syncope, Postural Tachycardia Syndrome
Interventions
Phenylephrine, L-Ng-monomethyl Arginine (L-NMMA)
Drug
Lead sponsor
New York Medical College
Other
Eligibility
14 Years to 29 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2022
U.S. locations
1
States / cities
Hawthorne, New York
Source: ClinicalTrials.gov public record
Updated May 23, 2025 · Synced Oct 8, 2026, 10:12 AM EDT
Completed No phase listed Observational

Tilt Table With Suspected Postural Orthostatic Tachycardia Syndrome (POTS) Subjects

NCT01617616
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome, Syncope, Vasovagal, Neurocardiogenic Syncope
Interventions
Not listed
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
10 Years to 21 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 20, 2017 · Synced Oct 8, 2026, 10:12 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Chemoreflex and Baroreflex Alterations Causing Postural Tachycardia Syndrome With Orthostatic Hyperpnea and Hypocapnia

NCT05923840
View directory record Official record
Conditions
Postural Orthostatic Tachycardia Syndrome, Hypocapnia, Hyperventilation
Interventions
Chemoreflex Testing, Baroreflex testing, Orthostatic stress testing
Diagnostic Test
Lead sponsor
New York Medical College
Other
Eligibility
15 Years to 39 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Hawthorne, New York
Source: ClinicalTrials.gov public record
Updated Jun 28, 2023 · Synced Oct 8, 2026, 10:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Autoimmune Basis for Postural Tachycardia Syndrome

NCT05043051
View directory record Official record
Conditions
Postural Tachycardia Syndrome
Interventions
Vagal stimulation, Sham stimulation
Device
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 80 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Jul 29, 2026 · Synced Oct 8, 2026, 10:12 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 8, 2025 · Synced Oct 8, 2026, 10:12 AM EDT
Recruiting No phase listed Observational

Screening Study for KIT D816V Mutated Mast Cell Disease in Select Populations

NCT07143669
View directory record Official record
Conditions
Clonal Mast Cell Disease, KIT D816V Mutation, Suspected KITD816V Mutated Clonal Mast Cell Disease
Interventions
Screening
Other
Lead sponsor
Blueprint Medicines Corporation
Industry
Eligibility
18 Years and older
Enrollment
750 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
25
States / cities
Birmingham, Alabama • Scottsdale, Arizona • Tucson, Arizona + 21 more
Source: ClinicalTrials.gov public record
Updated Oct 7, 2026 · Synced Oct 8, 2026, 10:12 AM EDT