Clinical trials: Orthostatic Tachycardia
POTS
POTS Stroke Volume
the investigators propose studies of a tiny, wearable, wireless, beat-to-beat blood pressure monitor that will be both a transformative research platform and an enabler of patient self-care in the diagnosis, investigation, and…
- Trial name
- NCT05796154
- Testing
- ear blood pressure monitor
- Volunteers
- 30 people
- Sponsor
- University of Calgary
Postural Tachycardia Syndrome
Local Vasoconstriction in Postural Tachycardia Syndrome
The investigators study will determine how often blood flow regulation abnormalities and abnormalities of sympathetic regulation produced by nitric oxide, angiotensin-II, and oxidative stress occur in POTS and the mechanism(s) of…
- Trial name
- NCT01210430
- Testing
- Losartan, Ascorbic Acid (Vitamin C), Normal Saline
- Where
- United States
- Volunteers
- 74 people, healthy volunteers welcome
- Sponsor
- New York Medical College
Postural Orthostatic Tachycardia Syndrome, Hypocapnia
Chemoreflex and Baroreflex Alterations Causing Postural Tachycardia Syndrome With Orthostatic Hyperpnea and Hypocapnia
Postural tachycardia syndrome (POTS) is the most common chronic cause of postural lightheadedness, and upright confusion afflicting many Americans, mostly young women.
- Conditions
- Postural Orthostatic Tachycardia Syndrome, Hypocapnia, Hyperventilation
- Trial name
- NCT05923840
- Testing
- Chemoreflex Testing, Baroreflex testing, Orthostatic stress testing
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- New York Medical College
Arrhythmias, Cardiac
Biospecimen Repository for Cardiac Arrhythmias at the Cleveland Clinic
Biorepository of blood and or tissue samples from patients presenting with cardiac arrhythmia syndromes.
- Trial name
- NCT00921986
- Where
- United States
- Volunteers
- 2,000 people, healthy volunteers welcome
- Sponsor
- The Cleveland Clinic
Postural Tachycardia Syndrome
The Impact of Improved Vagal Function on Periaqueductal Gray Connectivity
This study is being to see if participating in breathing exercise training and practicing this training will help with Postural tachycardia syndrome (POTS).
- Trial name
- NCT05618067
- Testing
- breathing exercise training
- Where
- United States
- Volunteers
- 12 people
- Sponsor
- Virginia Commonwealth University
Postural Orthostatic Tachycardia Syndrome, Orthostatic Intolerance
Hemodynamic Response of Neuropathic And Non-Neuropathic POTS Patients To Adrenoreceptor Agonist And Antagonist
The purpose of this study is to test the hypothesis that patients with non-neuropathic POTS will have different responsiveness than patients with neuropathic POTS to direct alpha-1 adrenoreceptor agonist therapy (droxidopa) and…
- Trial name
- NCT03070730
- Testing
- Droxidopa, Atenolol
- Where
- 2 sites in United States
- Volunteers
- 8 people
- Sponsor
- Beth Israel Deaconess Medical Center
Postural Tachycardia Syndrome
A Novel Noninvasive Thermoregulatory Device for Postural Tachycardia Syndrome
The investigators hope to learn the feasibility and preliminary efficacy of the Embr device for improving thermal comfort in individuals with POTS and impaired thermoregulation.
- Trial name
- NCT04943276
- Testing
- Embr Device
- Where
- United States
- Volunteers
- 23 people
- Sponsor
- Stanford University
Persistent Physical Symptoms (PPS)
CBT Plus SMC Compared to SMC for Persistent Physical Symptoms in Secondary Care (PRINCE)
Brief Summary: Persistent Physical Symptoms (PPS), also known as medically unexplained symptoms (MUS) is a term used to describe a range of persistent bodily symptoms for which the exact cause is unclear.
- Trial name
- PRINCE (NCT02426788)
- Testing
- Cognitive behavioural therapy (CBT)
- Where
- 7 sites in United Kingdom
- Volunteers
- 324 people
- Sponsor
- King's College London
Postural Tachycardia Syndrome
fMRI in Postural Tachycardia Syndrome
Postural tachycardia syndrome (POTS) is one of the most common forms of chronic orthostatic intolerance in the United States. This is a disabling disorder characterized by an excessive increase in heart rate upon standing that is…
- Trial name
- POTS (NCT04137757)
- Testing
- Lower Body Negative Pressure
- Where
- United States
- Volunteers
- 21 people, healthy volunteers welcome
- Sponsor
- Milton S. Hershey Medical Center
Autonomic Failure, Dysautonomia
Concentration and Attentional Deficits in POTS and Other Autonomic Neuropathies
People with POTS, autoimmune autonomic neuropathy (AAN), pure autonomic failure (PAF), SFN and Ehlers Danlos Syndrome (EDS) do not only suffer from orthostatic symptoms such as dizziness, headache, neck pain, blurred vision or…
- Conditions
- Autonomic Failure, Dysautonomia, Cognitive Impairment, Ehlers-Danlos Syndrome
- Trial name
- POTSKog (NCT03681080)
- Testing
- leg crossing
- Where
- Germany
- Volunteers
- 110 people, healthy volunteers welcome
- Sponsor
- RWTH Aachen University
Postural Tachycardia Syndrome
The Effect of Ivabradine on Patients With Postural Tachycardia Syndrome
The purpose of this study is to determine whether Ivabradine is an effective treatment for postural tachycardia syndrome.
- Trial name
- NCT01761825
- Testing
- ivabradine
- Volunteers
- 20 people
- Sponsor
- Tel-Aviv Sourasky Medical Center
Postural Tachycardia Syndrome, Orthostatic Intolerance
Peripheral Dopamine in Postural Tachycardia Syndrome
The purpose of the proposed research is to determine how changes in kidney dopamine (DA) activity influence urinary sodium excretion.
- Trial name
- NCT00685919
- Testing
- Carbidopa
- Where
- United States
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- Vanderbilt University
Postural Orthostatic Tachycardia Syndrome, Postural Tachycardia Syndrome
Autoimmune Basis for Postural Tachycardia Syndrome
The purpose of this study is to see if some people with postural tachycardia syndrome (POTS) have higher levels of immune proteins (autoantibodies) directed against receptors of the autonomic nervous system, and if these…
- Conditions
- Postural Orthostatic Tachycardia Syndrome, Postural Tachycardia Syndrome, Tachycardia, Arrhythmias, Cardiac
- Trial name
- NCT02725060
- Testing
- phenylephrine, isoproterenol, 25 micro-Ci of radiation
- Where
- 2 sites in United States
- Volunteers
- 58 people, healthy volunteers welcome
- Sponsor
- Vanderbilt University Medical Center
Postural Orthostatic Tachycardia Syndrome
Phenotyping of Postural Orthostatic Tachycardia Syndrome (POTS)
This is an observational study to deeply phenotype the disorder of POTS using multiple testing modalities.
- Trial name
- NCT06292104
- Testing
- multimodal diagnostic testing
- Where
- United States
- Volunteers
- 350 people, healthy volunteers welcome
- Sponsor
- University of Texas Southwestern Medical Center
Postural Orthostatic Tachycardia Syndrome (POTS), Fibromyalgia (FM)
Auto-immune Contribution in Symptom-based Sensory and Autonomic Disorders
Postural Orthostatic Tachycardia Syndrome (PoTS) is a condition where the heart rate increases when standing up, causing symptoms like dizziness and fainting.
- Trial name
- ACSSAD (NCT06992531)
- Testing
- Questionnaire and Physical Exam, Nerve conduction studies, Microneurography
- Volunteers
- 250 people, healthy volunteers welcome
- Sponsor
- King's College London
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome, Chronic Fatigue Syndrome
The Exercise Response to Pharmacologic Cholinergic Stimulation in Myalgic Encephalomyelitis / Chronic Fatigue Syndrome
Myalgic encephalomyelitis/Chronic fatigue syndrome (ME/CFS), otherwise known as Chronic fatigue syndrome (CFS) or myalgic encephalomyelitis (ME), is an under-recognized disorder whose cause is not yet understood.
- Conditions
- Myalgic Encephalomyelitis/Chronic Fatigue Syndrome, Chronic Fatigue Syndrome, Myalgic Encephalomyelitis, Exercise Intolerance
- Trial name
- NCT03674541
- Testing
- Pyridostigmine Bromide
- Where
- United States
- Volunteers
- 45 people
- Sponsor
- Brigham and Women's Hospital
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
Syncope
Evaluation of Chronic Orthostatic Intolerance
This study will conduct tests with patients with primary chronic orthostatic intolerance (COI) to learn more about this disorder of the autonomic nervous system.
- Trial name
- NCT00069693
- Where
- 3 sites in United States, Canada
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)
Tachycardia, Postural Orthostatic Tachycardia Syndrome
Pathophysiology of Orthostatic Intolerance
The purpose of this study is to describe the mechanism of orthostatic intolerance, relying on cardiovascular physiological studies.
- Trial name
- NCT00608725
- Testing
- DAXOR, QSweat, Intrinsic Heart Rate
- Where
- United States
- Volunteers
- 260 people, healthy volunteers welcome
- Sponsor
- Satish R. Raj
Postural Orthostatic Tachycardia Syndrome
Transdermal Vagal Stimulation for POTS
Some patients experience high heart rates and symptoms of light-headedness, fatigue, headache during standing despite well maintained blood pressure. These patient are disabled and can't be in upright position for a longer time.
- Trial name
- NCT02281097
- Testing
- Stimulation
- Where
- United States
- Volunteers
- 18 people
- Sponsor
- Vanderbilt University