Clinical trials: Blood Circulation Disorder
Sexual Dysfunction, Stress Incontinence
A Study to Measure the Degree and Effectiveness of the Various vSculpt Operating Modes
A pilot study to determine the degree and effectiveness of the various modes of vSculpt, an over-the-counter "OTC" medical device, on enhanced genital blood flow and improvement in quality of life in menopausal women who suffer…
- Trial name
- NCT02856490
- Testing
- vSculpt, InTone
- Where
- United States
- Volunteers
- 6 people, healthy volunteers welcome
- Sponsor
- Joylux, Inc.
Hypertension
Effects of Nebivolol on Skeletal Muscle During Exercise in Hypertensive Patients
The purpose of this study is to determine if Nebivolol improves microvascular perfusion in skeletal muscle during exercise in hypertensive patients and whether this improvement is accompanied by reduction in vascular oxidative…
- Trial name
- NCT01501929
- Testing
- Metoprolol succinate, Nebivolol, Non-invasive measurement of Cardiac Output (CO)
- Where
- United States
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- University of Texas Southwestern Medical Center
Sickle Cell Disease, Sickle Cell Anemia
Microvascular Blood Flow in Sickle Cell Anemia
Sickle cell disease (SCD) is an inherited blood disorder that causes the red blood cells to change their shape from a round shape to a half-moon/crescent or sickled shape.
- Trial name
- NCT01566890
- Testing
- regadenoson infusion with contrast-enhanced ultrasound, contrast-enhanced ultrasound
- Where
- 2 sites in United States
- Volunteers
- 91 people, healthy volunteers welcome
- Sponsor
- Versiti Blood Health
Aging
Role of Flavanols In Cardiovascular Function in Healthy Aging
Groups of naturally occurring compounds called flavonoids are found in foods such as fruits and vegetables, red wine, tea, dark chocolate and cocoa products.
- Trial name
- NCT01395277
- Testing
- High Flavanol first then Low Flavanol, Low Flavanol first then High Flavanol
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- University of Texas at Austin
Cerebrovascular Disorders
Brain Blood Flow Responses to Stress: Sex Differences
Twenty-six otherwise healthy adults between 18-40 years of age composed of 13 males and 13 females will be enrolled in this study to determine how sex and sex hormones influence cerebral blood flow (CBF) control in healthy young…
- Trial name
- NCT06253702
- Testing
- Indomethacin, Orilissa, Testosterone gel
- Where
- United States
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Type 1 Diabetes, Hypoglycemia Unawareness
Naltrexone and Hypoglycemia in Type 1 Diabetes
Low blood sugar is also called hypoglycemia. Usually, it is mild and can be treated quickly and easily by eating or drinking a small amount of a sugar-rich food.
- Trial name
- Naltrexone (NCT01053078)
- Testing
- Naltrexone
- Where
- United States
- Volunteers
- 29 people, healthy volunteers welcome
- Sponsor
- University of Minnesota
Spinal Cord Injury, Autonomic Dysreflexia
Treatment of Post-SCI Hypotension
While treatment strategies for OH have been identified for use in persons with acute SCI, the field of SCI medicine lacks a gold standard for treatment thresholds and well-defined outcome parameters.
- Conditions
- Spinal Cord Injury, Autonomic Dysreflexia, Orthostatic Hypotension, Baroreceptor Integrity
- Trial name
- NCT02919917
- Testing
- Midodrine Hydrochloride
- Where
- 2 sites in United States
- Volunteers
- 66 people, healthy volunteers welcome
- Sponsor
- James J. Peters Veterans Affairs Medical Center
Knee Osteoarthritis
Assessment of Efficacy of Low Intensity Resistance Training in Men at Risk for Symptomatic Knee Osteoarthritis
The purpose of this research study is to determine whether low intensity resistance training with concurrent application of a peripheral blood flow restriction device to the exercising limb will elicit increased quadriceps…
- Trial name
- PBFR3 (NCT01487525)
- Testing
- Double leg press with partial blood flow restriction, Double leg press without partial blood flow restriction
- Where
- United States
- Volunteers
- 44 people, healthy volunteers welcome
- Sponsor
- University of Iowa
Peripheral Artery Disease
FlowMet-R Blood Flow Measurement for the Diagnosis of Peripheral Artery Disease and Critical Limb Ischemia
Non-randomized, multi-center, longitudinal study of healthy subjects and subjects with PAD who are scheduled for ABI, TBI, and either Duplex Ultrasound or Angiographic assessments in a vascular clinic.
- Trial name
- NCT04120610
- Testing
- FlowMet-R, ABI, TBI
- Where
- 5 sites in United States
- Volunteers
- 195 people, healthy volunteers welcome
- Sponsor
- Medtronic Endovascular
Cerebral Arterial Diseases
Human Cerebral Blood Flow Regulation
To determine cerebrovascular control mechanisms in humans and provide mechanistic knowledge to offer new sex-specific therapeutic options for cerebrovascular diseases.
- Trial name
- Gas Challenge (NCT04265053)
- Testing
- Indomethacin 25 MG/50 MG
- Where
- United States
- Volunteers
- 42 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Restless Legs Syndrome, Neuropathic Pain
Spinal Cord Stimulation for Restless Legs Syndrome
The overall goal of this proposed study is to evaluate the underlying mechanisms of neural control of blood flow in the lower extremities in humans with restless leg syndrome (RLS).
- Trial name
- NCT03539081
- Testing
- Dual-energy X-ray absorptiometry Scan, Laboratory Measurements, Blood Flow Measurement
- Where
- United States
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- Marshall Holland
Insulin Resistance
The Effects of Altering Physical Activity on Cardiometabolic Health
The effects of physical inactivity on variations in blood glucose and vascular health are not fully understood. The purpose of this study is to determine if an acute transition from physical activity to inactivity alters vascular…
- Trial name
- PIA (NCT01879059)
- Testing
- Exercise
- Where
- United States
- Volunteers
- 13 people, healthy volunteers welcome
- Sponsor
- University of Kansas Medical Center
Traumatic Brain Injury, Multiple Sclerosis
Measuring Cerebral Blood Flow Using Pseudo-continuous Arterial Spin Labeling Perfusion Magnetic Resonance Imaging
This study will test a new MRI sequence that measures cerebral blood flow (CBF). Because this technique for measuring CBF is new, there is little information on what the normal values for different regions of the brain should be.
- Conditions
- Traumatic Brain Injury, Multiple Sclerosis, Alzheimer's Disease, Tumor
- Trial name
- NCT02767609
- Testing
- Magnetic Resonance Imaging
- Volunteers
- 1 people, healthy volunteers welcome
- Sponsor
- Loma Linda University
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
Bone Blood Flow Regulation
Exploration of Blood Flow Regulation to Bone in Humans
Without blood flow, bone cannot maintain its integrity. Bone blood flow responds to various local and systemic factors, however, bone perfusion in humans remains relatively unstudied.
- Trial name
- NCT04083794
- Testing
- Laboratory based assessments
- Where
- United States
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Spaulding Rehabilitation Hospital
Vascular Function, Racial Disparity
Vascular Dysfunction in Black Individuals: Roles of Nitric Oxide and Endothelin-1
The research aims of this proposal are: Specific Aim 1: To test whether an increase in nitric oxide signaling can increase vasodilator responses in young Black individuals.
- Trial name
- UMMC_Pilot (NCT04770155)
- Testing
- Dietary Nitrates 400 mg, L-citrulline 3 g, Sildenafil 100 mg
- Where
- United States
- Volunteers
- 8 people, healthy volunteers welcome
- Sponsor
- University of Mississippi Medical Center
Irritable Colon
Study to Assess the Effect Of Alosetron On Mucosal Blood Flow
This study will look at colonic mucosal blood flow in subjects who have taken alosetron vs placebo and healthy volunteers vs diarrhea-predominant Irritable Bowel Syndrome (d-IBS) patients.
- Trial name
- NCT00370032
- Testing
- alosetron
- Where
- United Kingdom
- Volunteers
- 49 people, healthy volunteers welcome
- Sponsor
- GlaxoSmithKline
Chronic Fatigue Syndrome
Use of Sildenafil (Viagra) to Alter Fatigue, Functional Status and Impaired Cerebral Blood Flow in Patients With CFS
Use of Viagra to Alter Symptoms in Patients with Chronic Fatigue Syndrome (CFS)
- Trial name
- NCT00598585
- Testing
- Sildenafil (Viagra)
- Where
- United States
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Charles Drew University of Medicine and Science
Healthy, Smokers
Effect of Whole Body Periodic Acceleration on Airway Endothelial Function
In the present proposal the investigators wish to assess the effect of a single session with the device known as Exer-Rest® which applies Whole Body Periodic Acceleration (WBPA) on baseline airway blood flow (Qaw) and in Qaw…
- Conditions
- Healthy, Smokers, Asthma
- Trial name
- NCT01213706
- Testing
- Whole Body Periodic Acceleration (WBPA)
- Where
- United States
- Volunteers
- 45 people, healthy volunteers welcome
- Sponsor
- University of Miami
Cystic Fibrosis
Blood Flow and Vascular Function in Cystic Fibrosis
Cystic fibrosis (CF) has many health consequences. A reduction in the ability to perform exercise in patients with CF is related to greater death rates, steeper decline in lung function, and more frequent lung infections.
- Trial name
- CF-FLOW (NCT02057458)
- Testing
- Sildenafil (Acute-1 hour), Sildenafil (Subchronic-4 weeks)
- Where
- United States
- Volunteers
- 19 people, healthy volunteers welcome
- Sponsor
- Augusta University