Clinical trials: Orthostatic Intolerance
Orthostatic Hypotension, Spinal Cord Injuries
A Study of Blood Pressure and Blood Supply to the Brain in Persons With a Spinal Cord Injury.
The purpose of this study is to determine how blood pressure and blood flow are controlled during head-up tilt in a semi-upright position.
- Trial name
- NCT00248807
- Testing
- 1.25 mg enalaprilat IV, Head up tilt (HUT)
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- VA Office of Research and Development
Parkinson Disease, Orthostatic Hypotension
Effect of Levodopa on Cardiovascular Autonomic Function in Parkinson's Disease
Levodopa is a precursor of dopamine and is the treatment of choice to treat the motor symptoms of Parkinson's disease (PD); however, the effect of levodopa on cardiovascular autonomic function in PD is poorly understood.
- Trial name
- NCT05487300
- Testing
- Autonomic testing on and off levodopa
- Where
- United States
- Volunteers
- 40 people
- Sponsor
- University of Utah
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
Neurogenic Orthostatic Hypotension, Multiple System Atrophy (MSA) With Orthostatic Hypotension
TD-9855 Phase 2 in Neurogenic Orthostatic Hypotension (nOH)
This multiple-center, 3-part, single-blind dose escalation (Part A), randomized, double-blind (Part B), and open-label multiple dose extension (Part C) study will be conducted in male and female subjects with neurogenic…
- Conditions
- Neurogenic Orthostatic Hypotension, Multiple System Atrophy (MSA) With Orthostatic Hypotension, Pure Autonomic Failure, Parkinson Disease
- Trial name
- NCT02705755
- Testing
- TD-9855
- Where
- 6 sites in United States
- Volunteers
- 34 people
- Sponsor
- Theravance Biopharma
Orthostatic Intolerance
Sex Hormones and Orthostatic Tolerance
This study is designed to determine the causes of "orthostatic intolerance" which occurs more commonly in women than in men. Orthostatic tolerance is the ability to remain standing up right for long periods of time, or to avoid…
- Trial name
- NCT01153581
- Testing
- Ganirelix acetate, 17β-Oestradiol, Progesterone
- Where
- United States
- Volunteers
- 109 people, healthy volunteers welcome
- Sponsor
- Yale University
Orthostatic Hypotension, Hemodynamic Instability
Trial Comparing Low Dose and High Dose Steroids in Patients Undergoing Colorectal Surgery
The purpose of this study is to evaluate the effect of low dose versus high dose steroids vital signs of patients currently on steroids or recently treated with steroids undergoing major colorectal surgery.
- Conditions
- Orthostatic Hypotension, Hemodynamic Instability, Fever, Hypothermia
- Trial name
- NCT01559675
- Testing
- Hydrocortisone High Dose, Hydrocortisone Low Dose
- Where
- United States
- Volunteers
- 121 people
- Sponsor
- Cedars-Sinai Medical Center
Orthostatic Intolerance, Postural Tachycardia Syndrome
Effect of Exercise in OI
The main limitation patients with orthostatic intolerance (OI, or postural tachycardia syndrome, POTS) have to exercise is related to their increase in heart rate when standing.
- Trial name
- NCT00770484
- Where
- United States
- Volunteers
- 12 people
- Sponsor
- Vanderbilt University
Hypertension, Pure Autonomic Failure
Local Heat Stress in Autonomic Failure Patients With Supine Hypertension
Patients with autonomic failure are characterized by disabling orthostatic hypotension (low blood pressure on standing), and at least half of them also have high blood pressure while lying down (supine hypertension).
- Conditions
- Hypertension, Pure Autonomic Failure, Multiple System Atrophy, Autonomic Failure
- Trial name
- NCT02417415
- Testing
- Passive heat stress, Control (non-heating)
- Where
- United States
- Volunteers
- 22 people
- Sponsor
- Vanderbilt University
Postural Orthostatic Tachycardia Syndrome
Dietary Sodium's Effect on Urinary Sodium and Dopamine Excretion in Patients With Postural Tachycardia Syndrome
Patients with Postural Tachycardia Syndrome (POTS) may not adequately expand their plasma volume in response to a high sodium diet.
- Trial name
- NCT01563107
- Testing
- Plasma Volume, Exercise Capacity Test - Bicycle, Posture Study
- Where
- United States
- Volunteers
- 38 people, healthy volunteers welcome
- Sponsor
- Vanderbilt University Medical Center
Syncope, Vasovagal
Preventing Post-Vaccination Presyncope and Syncope in Adolescents Using Simple, Clinic-based Interventions: A Pilot Study
This is a randomized controlled open-label trial. During the study, adolescents scheduled to receive at least one intramuscular (IM) vaccine will receive either Buzzy®, Music, or Buzzy® and Music intervention(s) in addition to…
- Trial name
- NCT03533829
- Testing
- Buzzy®, Music
- Where
- 2 sites in United States
- Volunteers
- 30 people
- Sponsor
- Duke University
Spinal Cord Injury
Blood Pressure, Cerebral Blood Flow and Cognition in Spinal Cord Injury
Following spinal cord injury autonomic regulation of the cardiovascular system is impaired, which results in a variety of measurable abnormalities in blood pressure.
- Trial name
- NCT02307565
- Testing
- Midodrine
- Where
- 2 sites in United States
- Volunteers
- 19 people
- Sponsor
- James J. Peters Veterans Affairs 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
Syncope, Syncope, Vasovagal
Head-up Tilt Test in Patients With Reflex Syncope and Asystolic Response Who Received a Dual-chamber Pacemaker With the Closed Loop Stimulation (CLS) and Participated in the BIOSync Trial
The purpose of this study is to explore changes in patients' hemodynamic parameters during the Head-Up Tilt Test ("HUTT") and their timing with respect to onset of the Closed Loop Stimulation (CLS) pacing.
- Trial name
- BIO|Sync-HUTT (NCT06038708)
- Where
- 2 sites in Italy
- Volunteers
- 20 people
- Sponsor
- Biotronik SE & Co. KG
Orthostatic Hypotension
An Open Label Trial to Decrease Signs and Symptoms of Orthostatic Hypotension Using Midodrine or Intravenous Fluid Bolus in Patients Following Total Hip Arthroplasty
Orthostatic hypotension following total hip arthroplasty is known to limit the ability of patients to perform physical therapy (PT) and increase the length of hospital stay and costs.
- Trial name
- NCT02154243
- Testing
- Midodrine, Intravenous fluid bolus
- Where
- United States
- Volunteers
- 13 people
- Sponsor
- Hospital for Special Surgery, New York
Hypotension, Orthostatic, Hypotension
Dose Response to the Norepinephrine Precursor Droxidopa in Hypotensive Individuals With Spinal Cord Injury
The goal of this study is to determine the efficacy of the drug Droxidopa (Northera) in increasing blood pressure in subject with hypotension, low blood pressure, which is classified as blood pressure less than 110/70 in males…
- Conditions
- Hypotension, Orthostatic, Hypotension, Spinal Cord Injuries
- Trial name
- NCT03602014
- Testing
- Northera
- Where
- 2 sites in United States
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- James J. Peters Veterans Affairs Medical Center
Postural Orthostatic Tachycardia Syndrome, Chronic Orthostatic Intolerance
Using Mirabegron to Increase BP in Patients With POTS
This is a pilot dose-finding study to test the hypothesis that mirabegron increases systolic blood pressure (BP), prevents syncope/presyncope, and improves the quality of life (QOL), functional capacity, chest pain, and…
- Conditions
- Postural Orthostatic Tachycardia Syndrome, Chronic Orthostatic Intolerance, Syncope
- Trial name
- RAISE-BP (NCT06133075)
- Testing
- Mirabegron 50 MG, Mirabegron 25 MG
- Where
- United States
- Volunteers
- 20 people
- Sponsor
- Cedars-Sinai Medical Center
Syncope, Vasovagal, Neurally-Mediated
Clinical Trial for the Prevention of Vasovagal Syncope
The main question in the study is whether people taking fludrocortisone are less likely to faint than people taking an inactive pill called a placebo. Fludrocortisone is a drug that stimulates the body to retain salt and water.
- Trial name
- NCT00118482
- Testing
- fludrocortisone acetate
- Where
- 14 sites in United States, Canada
- Volunteers
- 213 people
- Sponsor
- University of Calgary
Arterial Stiffness, Renin Angiotensin Aldosterone System
RAAS and Arterial Stiffness in SCI
The study is examining differences in central arterial stiffness, orthostatic changes in blood pressure, norepinephrine, and plasma renin in individuals with spinal cord injury compared with age-matched uninjured controls.
- Conditions
- Arterial Stiffness, Renin Angiotensin Aldosterone System, Orthostatic Hypotension, Spinal Cord Injury
- Trial name
- NCT04510974
- Testing
- Spinal Cord Injury
- Where
- United States
- Volunteers
- 33 people
- Sponsor
- James J. Peters Veterans Affairs Medical Center
Hypotension, Orthostatic
Study to Assess the Benefit of Midodrine in the Treatment of Patients With Neurogenic Orthostatic Hypotension
The purpose of this clinical study is to evaluate the clinical effect of midodrine hydrochloride (ProAmatine®) compared to placebo in patients with orthostatic hypotension by measuring the time to onset of near syncopal symptoms…
- Trial name
- NCT00555880
- Testing
- Midodrine hydrochloride
- Where
- 11 sites in United States
- Volunteers
- 24 people
- Sponsor
- Shire
Orthostatic Hypotension
Tilt-Table Study of the Clinical Efficacy of Midodrine in Symptomatic Orthostatic Hypotension
The purpose of this study is to determine whether midodrine works against the symptoms of orthostatic hypotension caused by being on a tilt table.
- Trial name
- NCT01518946
- Testing
- Midodrine HCl
- Where
- 13 sites in United States
- Volunteers
- 24 people
- Sponsor
- Shire