Clinical trials: Orthostatic Intolerance
Syncope, Vasovagal
Presyncope (Syncope) Prevention Study
This study was a prospective, randomized clinical trial that was conducted in adolescents (10 through 14 years of age) receiving at least one recommended intramuscularly administered vaccine to evaluate the efficacy and…
- Trial name
- PS^2 (NCT04772755)
- Testing
- Buzzy® and Electronic Game
- Where
- 2 sites in United States
- Volunteers
- 338 people, healthy volunteers welcome
- Sponsor
- Duke University
Postural Orthostatic Tachycardia Syndrome (POTS), Syncope
Abdominal and Lower Extremity Compression During Tilt Table Testing in Adolescent POTS Patients
Postural orthostatic tachycardia syndrome (POTS) is a common cause of orthostatic intolerance in adolescents and adults. Compression stockings are commonly recommended as a treatment modality for POTS, but the effects of…
- Trial name
- NCT01795469
- Testing
- Zoex compression garment
- Where
- United States
- Volunteers
- 20 people
- Sponsor
- Nationwide Children's Hospital
Postural Tachycardia Syndrome, Ehlers-Danlos Syndrome
Standing Cognition and Co-morbidities of POTS Evaluation
The purpose of this study is to evaluate cognition in patients with postural tachycardia syndrome (POTS) while lying down and standing and to assess the prevalence of hypermobile Ehlers-Danlos Syndrome in POTS.
- Trial name
- SCOPE (NCT03602482)
- Testing
- Standing, Supine
- Where
- United States
- Volunteers
- 139 people, healthy volunteers welcome
- Sponsor
- Milton S. Hershey Medical Center
Syncope, Vasovagal
Cardioneuroablation for Reflex Syncope
Aim. To assess the effects of cardioneuroablation (CNA) on cardiac autonomic regulation and syncope recurrences in patients with vasovagal syncope (VVS), and to compare this novel approach with standard non-pharmacological…
- Trial name
- ROMAN (NCT03903744)
- Testing
- Cardioneuroablation
- Where
- Poland
- Volunteers
- 48 people
- Sponsor
- Centre of Postgraduate Medical Education
Vomiting Syndrome, Irritable Bowel Syndrome
Autonomic Profiles in Pediatric Patients With Cyclic Vomiting Syndrome (CVS), Irritable Bowel Syndrome (IBS),Postural Orthostatic Tachycardia Syndrome (POTS), Functional Abdominal Pain (FAP) or Chronic Nausea
Retrospectively review the charts of all children who had heart rate variability, deep breathing test, valsalva maneuver, tilt table test, thermoregulatory sweat testing, quantitative sudomotor axon reflex test (QSART) completed…
- Conditions
- Vomiting Syndrome, Irritable Bowel Syndrome, Postural Orthostatic Tachycardia Syndrome, Abdominal Pain
- Trial name
- NCT00728026
- Volunteers
- 19 people
- Sponsor
- Medical College of Wisconsin
Parkinson Disease
The Role of the Noradrenergic System in the Nonmotor Symptoms of Parkinson's Disease
The goal of this clinical trial is to learn about the role of noradrenergic system in the non-motor symptoms of Parkinson's disease. The main objectives it aims to answer are: 1.
- Trial name
- NAinPD (NCT04346394)
- Testing
- Yohimbine HCl
- Where
- United States
- Sponsor
- Nathaniel M. Robbins
Syncope, Vasovagal, Postural Orthostatic Tachycardia Syndrome
Paediatric Syncope in the Emergency Department
The investigators will assess the efficacy of clinically recommended counterpressure maneuvers (CPM) in preventing syncope for paediatric patients.
- Conditions
- Syncope, Vasovagal, Postural Orthostatic Tachycardia Syndrome, Orthostatic Intolerance
- Trial name
- DETECT-ED (NCT05555771)
- Testing
- Counterpressure Maneuvers, Usual Care
- Where
- Canada
- Volunteers
- 300 people
- Sponsor
- Dr. Victoria Claydon
Postural Tachycardia Syndrome
POTS NET mRNA Functional Correlation With NET Activity
DNA Acetylation can be responsible for significant down-regulation of transcription of the Norepinephrine Transporter (NET). NET is an important clearance transporter that removes norepinephrine (NE) from sympathetic neuronal…
- Trial name
- NCT03218761
- Testing
- NET mRNA level, Plasma catechols, Urine Catechols
- Where
- United States
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Vanderbilt University Medical Center
Postural Tachycardia Syndrome
Periaqueductal Gray-vagus Nerve Interface Malfunction Explain the Natural History With Its Numerous Co-morbidities?
This study is being conducted to see how people with Postural tachycardia syndrome (POTS) make sense of the things they see. The information may help doctors to learn more about how the different parts of people's brains…
- Trial name
- NCT05618054
- Testing
- Looming task
- Where
- United States
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- Virginia Commonwealth University
Fever, Orthostatic Hypotension
Orthostatic Hypotension in Children With Acute Febrile Illness
Objective:to determent if children suffering from acute febrile illness has higher rate of orthostatic hypotension compared with children with no febrile illness. Design: a prospective cohort study.
- Trial name
- NCT00452712
- Testing
- All subjects will have their blood pressure measured in supine position (after 5 minute of rest) and after 3 minute of standing.
- Where
- Israel
- Volunteers
- 100 people
- Sponsor
- Assaf-Harofeh Medical Center
Hypertension
Impact of Citrulline and Arginine Supplementation on the Post-exercise Hypotension (PEH)
Post-exercise hypotension (PEH) is a established phenomenon as one of the non-pharmacological ways of reducing blood pressure, producing important impacts, particularly in hypertensive individuals.
- Trial name
- PEH (NCT03378596)
- Testing
- L-citrulline + L-arginine, L-arginine, L-citrulline
- Where
- Brazil
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Juliano Casonatto
Syncope, Vasovagal, Postural Orthostatic Tachycardia Syndrome
Postural Sway and Counterpressure Maneuvers for Pediatric Syncope
The investigators are interested in whether discrete counterpressure maneuvers, or muscle movements in the lower body, will boost blood pressure and cardiovascular control in children who faint.
- Conditions
- Syncope, Vasovagal, Postural Orthostatic Tachycardia Syndrome, Orthostatic Intolerance
- Trial name
- NCT05633693
- Testing
- Counterpressure Maneuvers, Baseline Stand
- Where
- Canada
- Volunteers
- 30 people
- Sponsor
- Simon Fraser University
POTS - Postural Orthostatic Tachycardia Syndrome
Does a Periaqueductal Gray-vagus Nerve Interface Malfunction Explain the Nat hx With Its Numerous Co-morbidities?
Postural tachycardia syndrome (POTS) is a common and disabling disorder among adolescents. No epidemiologic data exist to support the often cited 0.5 to 2% prevalence.
- Trial name
- NCT06616363
- Testing
- Questionnaires to be competed, Provide list of medication and lifetime events, Use phone App to record new life events
- Where
- United States
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Virginia Commonwealth University
Autonomic Nervous System Diseases, Orthostatic Hypotension
The Pathophysiology of Orthostatic Hypotension
The purpose of this study is to determine the cause of low blood pressure in selective patients who have problems with their involuntary (autonomic) nervous system.
- Conditions
- Autonomic Nervous System Diseases, Orthostatic Hypotension, Dopamine Beta-Hydroxylase Deficiency, Orthostatic Intolerance
- Trial name
- NCT00748059
- Testing
- Standing or upright tilt, Microneurography, QSweat
- Where
- United States
- Volunteers
- 10 people
- Sponsor
- Vanderbilt University Medical Center
Ehlers Danlos Syndrome, External Hydrocephalus
Head Circumference Growth in Children With Ehlers-Danlos Syndrome Who Develop Dysautonomia Later in Life
It is known that 33-50% of Classic and Hypermobile Ehlers-Danlos Syndrome patients eventually develop dysautonomia, otherwise known as "POTS" (Postural Orthostatic Tachycardia Syndrome).
- Conditions
- Ehlers Danlos Syndrome, External Hydrocephalus, Dysautonomia, Postural Orthostatic Tachycardia Syndrome
- Trial name
- NCT01367977
- Where
- United States
- Volunteers
- 21 people
- Sponsor
- Genetic Disease Investigators
Neurocardiogenic Syncope
Propranolol to Treat Fainting Due to Sympathoadrenal Imbalance
This study will examine the effectiveness of the drug propranolol in preventing fainting in patients with sympathoadrenal imbalance (SAI).
- Trial name
- NCT00060866
- Testing
- Propranolol
- Where
- United States
- Volunteers
- 24 people
- Sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)
Chronic Fatigue Syndrome, Myalgic Encephalomyelitis
Reducing Orthostatic Intolerance With Oral Rehydration in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome Patients
We and others have shown that many younger patients with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) have orthostatic intolerance (OI), i.e., they can't tolerate prolonged standing.
- Conditions
- Chronic Fatigue Syndrome, Myalgic Encephalomyelitis, Systemic Exertion Intolerance Disease (SEID), Postural Tachycardia Syndrome (POTS)
- Trial name
- NCT02854683
- Testing
- Normal Saline, Oral Rehydration Solution
- Where
- United States
- Volunteers
- 45 people, healthy volunteers welcome
- Sponsor
- New York Medical College
Postural Tachycardia Syndrome, Autonomic Dysfunction
Non-invasive Vagal Neurostimulation (nVNS) in Adolescents With Postural Orthostatic Tachycardia Syndrome (POTS)
The purpose of this study is to determine if nVNS will decrease autonomic symptom intensity (COMPASS-31 and Child Functional Disability Inventory) in adolescent patients with postural orthostatic tachycardia syndrome (POTS) in…
- Conditions
- Postural Tachycardia Syndrome, Autonomic Dysfunction, Postural Orthostatic Tachycardia Syndrome, POTS - Postural Orthostatic Tachycardia Syndrome
- Trial name
- NCT06268288
- Testing
- GammaCore intervention, STEPS management protocol
- Where
- 2 sites in United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Mayo Clinic
Syncope, Postural Tachycardia Syndrome
EEG Characteristics in Youth POTS and/or Syncope
Orthostatic intolerance refers to symptoms that occur with standing and improve or resolve with recumbency. Few studies have evaluated orthostatic intolerance symptoms by electroencephalography (EEG), and none of those studies…
- Conditions
- Syncope, Postural Tachycardia Syndrome, Orthostatic Intolerance
- Trial name
- NCT02167412
- Where
- United States
- Volunteers
- 80 people
- Sponsor
- Nationwide Children's Hospital
Functional Gastrointestinal Disorders, Hypermobile Ehlers-Danlos Syndrome
Auricular Vagal Nerve Stimulation for Hypermobile Ehlers-Danlos Syndrome
Hypermobile Ehlers-Danlos Syndrome (hEDS) is a connective tissue disorder characterized by hyperextensible skin, joint hypermobility and additional connective tissue manifestations.
- Conditions
- Functional Gastrointestinal Disorders, Hypermobile Ehlers-Danlos Syndrome, Postural Orthostatic Tachycardia Syndrome, Autonomic Nervous System Disease
- Trial name
- NCT05212129
- Testing
- Percutaneous vagal nerve stimulation (pVNS) device, Acoustic vagal nerve stimulation (aVNS) treatment
- Where
- United States
- Volunteers
- 90 people
- Sponsor
- Medical College of Wisconsin