Clinical trials: Tachycardia
Postural Tachycardia Syndrome
Cognitive Dysfunction in Postural Tachycardia Syndrome
A common complaint among people with Postural Tachycardia Syndrome (POTS) is "brain fog" or difficulty concentrating. This is very poorly understood.
- Trial name
- NCT01366963
- Testing
- Seated Measurements, Standing Measurements, Self-Administered Surveys
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Vanderbilt University
Postural Tachycardia Syndrome
Assessment of Vascular Endothelial Function in Postural Tachycardia Syndrome
The purpose of this study is to see if people with Postural Tachycardia Syndrome (POTS) have different levels of certain chemicals in their blood than people who don't have POTS.
- Trial name
- NCT01308099
- Testing
- Blood Pressure and Blood Flow
- Where
- 2 sites in United States
- Volunteers
- 26 people, healthy volunteers welcome
- Sponsor
- Vanderbilt University Medical Center
Postural Orthostatic Tachycardia Syndrome
Assessment of Antibodies and Inflammatory Markers in Postural Tachycardia Syndrome
In this pilot study, the investigators will test the hypothesis that patients with postural tachycardia syndrome will have an elevated percentage of functional antibodies to adrenergic receptors compared with control subjects…
- Trial name
- NCT02196376
- Testing
- History, Physical, blood draw
- Where
- United States
- Volunteers
- 212 people, healthy volunteers welcome
- Sponsor
- Vanderbilt University
Asystole, Sinus Bradycardia
uPHI: Wireless Body Area Network Core Technology
The application scenario is shown in the figure below: the user utilizes an ECG-based wireless sensor (WiBoC Chipset), and transmit those signals to a mobile-phone device that has an embedded expert system integrated.
- Conditions
- Asystole, Sinus Bradycardia, Sinus Tachycardia, Sinus Arrhythmia
- Trial name
- uPHI (NCT01200667)
- Where
- Taiwan
- Volunteers
- 380 people, healthy volunteers welcome
- Sponsor
- Taipei Medical University WanFang Hospital
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
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
Postural Orthostatic Tachycardia Syndrome
CRI in POTS in Adolescents
The investigators aim to study whether the Compensatory Reserve Index (CRI) (an FDA approved device that assesses intravascular volume) can be used to evaluate severity of Postural Orthostatic Tachycardia Syndrome (POTS) and…
- Trial name
- POTS (NCT03974737)
- Testing
- CRI device (non-invasive vitals sign measurement)
- Where
- United States
- Volunteers
- 77 people, healthy volunteers welcome
- Sponsor
- University of Colorado, Denver
Menopause Related Conditions
Menopause Racing Heart Study
Palpitations occur in more than 25% of women as they approach menopause and after menopause. However, the etiology of menopausal palpitations has not been studied, and it is unknown whether palpitations in menopausal women are…
- Trial name
- NCT05062057
- Testing
- Adhesive ambulatory ECG recording patches
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Indiana University
Vasovagal Syncope, Postural Tachycardia Syndrome
Hypnosis in Autonomic Function
This study will investigate the relationship between susceptibility to hypnosis and regulation of the autonomic nervous system (nerves that control involuntary body functions, such as heart rate and sweating).
- Conditions
- Vasovagal Syncope, Postural Tachycardia Syndrome, Hypnosis
- Trial name
- NCT00061009
- Where
- United States
- Volunteers
- 93 people, healthy volunteers welcome
- Sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)
Fatigue, Tachycardia
Effect of Caffeine on Heart Function
The primary objective of this study is to assess the effect of an energy drink on ventricular repolarization as measured by the interval between the cardiac Q wave and the cardiac T wave (QT interval)obtained from the body…
- Trial name
- NCT02401776
- Testing
- Monster Energy Drink, Coffee
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- University of Texas at Austin
Postural Tachycardia Syndrome (POTS)
Effect of Dietary Sodium Intake on Vascular Endothelium
The investigators will test the hypothesis that markers of vascular endothelial dysfunction will be exaggerated acutely with an extreme high sodium diet compared to an extreme low-sodium diet.
- Trial name
- NCT01550315
- Testing
- Pulsitile Arterial Tonometry (PAT) Protocol, Calf Blood Flow in Reactive Hyperemia (CBF-RH), Evaluation of Forearm-Mediated Dilation
- Where
- United States
- Volunteers
- 27 people, healthy volunteers welcome
- Sponsor
- Vanderbilt University Medical Center