Clinical trials: Peripheral Blood Flow
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
Healthy
Analysis of Heart Muscle Function Following Exercise in Patients With Heart Disease
This study is designed to examine the blood flow, the nutrition, and the beating function of the heart under different conditions. Patients with narrowed coronary arteries my have restricted blood flow to the heart.
- Trial name
- NCT00001528
- Where
- United States
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- National Heart, Lung, and Blood Institute (NHLBI)
Spinal Cord Injury, Insulin Resistance
IR and Microvascular Blood Flow in SCI
Persons with spinal cord injury (SCI) are at an increased risk for metabolic disorders, including that of insulin resistance. As a result of neurological injury, they often have impaired mechanisms that regulate blood vessel…
- Trial name
- NCT02034331
- Testing
- Insulin iontophoresis, Acetylcholine Iontophoresis, Heat application
- Where
- United States
- Volunteers
- 68 people, healthy volunteers welcome
- Sponsor
- James J. Peters Veterans Affairs Medical Center
Diabetes Mellitus, Diabetic Foot Ulcer
Effect of Electromagnetic Field Therapy and Customized Foot Insole on Peripheral Circulation and Ankle-Brachial Pressure Index in Patients With Diabetic Foot Ulcer
Diabetic foot ulcers (DFUs) are a significant complication of diabetes mellitus, associated with poor peripheral circulation, neuropathy, and increased risk of lower-limb amputation.
- Trial name
- NCT07070544
- Testing
- Electromagnetic Field Therapy: • Frequency: 50 Hz • Intensity: 5-30 mT • Duration: 30 minutes/session • Frequency: 3 sessions/week for 8 weeks Customized Foot Insoles: • Individually tailored based on
- Volunteers
- 79 people, healthy volunteers welcome
- Sponsor
- South Valley University
Effect of Bike Seats on Male Perineal Blood Flow
Study of Bicycle Seat Effects on Male Perineal Blood Flow
The objective is to study the effects of bicycle riding and bicycle seats on blood flow to a man's reproductive organs. It has been shown that bicycle riding can affect a man's ability to have an erection.
- Trial name
- NCT01804725
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- University of Illinois Chicago
Healthy Volunteers
The Relationship Between Cardiac Output and Microvascular Visceral Blood Flow
Although major surgery is often required to treat abdominal problems, there is a significant risk of death or complication following these operations.
- Trial name
- NCT02167178
- Testing
- Administration of 0.9% NaCl solution, Measurement of stroke volume, Measurement of microvascular blood flow
- Where
- United Kingdom
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- University of Nottingham
Coronary Arterial Disease (CAD), Angina (Stable)
The Effect of Sublingual Nitroglycerin on Absolute Coronary Blood Flow
The goal of this clinical trial is to investigate the effect of sublingual nitroglycerin on absolute coronary blood flow in adult patients undergoing coronary angiography.
- Trial name
- FLOW-NITRO (NCT06823843)
- Testing
- Glycerin trinitrate (GTN)
- Where
- Belgium
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- VZW Cardiovascular Research Center Aalst
Diabetic Peripheral Neuropathy (DPN)
Administrative Claims Analysis of Metanx® in Diabetic Peripheral Neuropathy
This study will be an observational cohort study utilizing administrative claims data with 100 patients randomly selected taking Metanx® meeting the inclusion and exclusion criteria and 400 propensity score matched patients…
- Trial name
- NCT01247558
- Testing
- Metanx® (a medical food), Not treated with Metanx®
- Where
- United States
- Volunteers
- 500 people, healthy volunteers welcome
- Sponsor
- Pamlab, L.L.C.
Ocular Physiology, Regional Blood Flow
Choroidal Blood Flow Regulation During Isometric Exercise: Effects of Ca2+-Channel Blockade
Autoregulation is the ability of a vascular bed to maintain blood flow despite changes in perfusion pressure. For a long time it had been assumed that the choroid is a strictly passive vascular bed, which shows no autoregulation.
- Trial name
- NCT00280462
- Testing
- Nifedipine (drug), L-Arginin (drug)
- Where
- Austria
- Volunteers
- 21 people, healthy volunteers welcome
- Sponsor
- Medical University of Vienna
Stroke, Acute
Exercise and RIC and TCD
The first week after a stroke is a particularly important time, as improving blood flow may limit secondary ischaemic damage to the brain and help reduce the overall burden neurological injury and future disability.
- Trial name
- NCT03968068
- Testing
- Exercise Procedure, Remote Ischaemic Conditioning
- Where
- United Kingdom
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- Sheffield Teaching Hospitals NHS Foundation Trust
Right Ventricular Dysfunction, Cardiopulmonary Diseases
Right Heart and Lung Blood Flow During Exercise (RIGHT-NET 2.0)
RIGHT-NET 2.0 is a multicenter observational study with a retrospective-prospective design that builds on the original RIGHT-NET study.
- Conditions
- Right Ventricular Dysfunction, Cardiopulmonary Diseases, Pulmonary Hypertension
- Trial name
- RIGHT-NET 2 (NCT07851610)
- Volunteers
- 2,000 people, healthy volunteers welcome
- Sponsor
- IRCCS SYNLAB SDN
Healthy
Neural Control of Kidney Blood Flow During Exercise in African American Adults
The goal of this clinical trials is to learn if healthy young African American (AA) adults have a larger change in their kidney blood flow during exercise compared to White (W) adults.
- Trial name
- NCT03981640
- Testing
- Acute exercise, Cold pressor test, Mental stress test
- Where
- United States
- Volunteers
- 33 people, healthy volunteers welcome
- Sponsor
- University of Massachusetts, Boston
Cerebral Hypoxia
The Effects of Hypobaria vs Hypoxia on Cerebral Functions.
The investigators will investigate the effect of hypobaria and hypoxia on physiological responses such as: oxygen saturation, heart rate, cerebral blood flow, cerebral oxygenation, brain's activity and concentration performance.
- Trial name
- Hypoxia (NCT03303118)
- Testing
- Hypoxia
- Where
- Switzerland
- Volunteers
- 17 people, healthy volunteers welcome
- Sponsor
- Fliegerärztliches Institut
Traumatic Brain Injury
Application of Circulating Extracellular Vesicles in Early Disease Assessment and Prognosis After Traumatic Brain Injury
The purpose of this study was to observe the relationship between the changes of circulating extracellular vesicles and disease development and outcome in patients with traumatic brain injury, and to find early serum markers and…
- Trial name
- NCT05279599
- Where
- China
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- Tang-Du Hospital
Smoking
Airway and Pulmonary Vascular Endothelial Function in Healthy Smokers: Effect of Inhaled Glucocorticosteroid Treatment
The purposes of the present proposal are to 1) compare inhaled albuterol-induced changes in airway blood flow (Qaw), and in CO and Ppas in healthy current smokers and lifetime non-smokers as an index of endothelial function in…
- Trial name
- smoker3 (NCT02141633)
- Testing
- echocardiogram plus albuterol, airway blood flow plus albuterol, Fluticasone propionate
- Where
- United States
- Volunteers
- 31 people, healthy volunteers welcome
- Sponsor
- University of Miami
Muscle Weakness, Muscle Atrophy
Effect of Neuromuscular Electrical Stimulation Combined With Blood Flow Restriction on Muscular and Cardiovascular Function
Neuromuscular electrical stimulation (NMES) has recently been combined with blood flow restriction (BFR) in controlled trials and has shown increased muscular strength and size compared with NMES and BFR on their own.
- Trial name
- NCT03662555
- Testing
- Neuromuscular electrical stimulation
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- St. Mary's University, Twickenham
Open Angle Glaucoma, Normal Tension Glaucoma
Reproducibility of Blood Flowmetry in Human Retina Using the Nidek Laser Speckle Flowgraphy LSFG-NAVI System
In addition to intraocular pressure blood perfusion pressure in the optic nerve is an important factor determing the cause of glaucoma. Increasing evidence suggests that in glaucoma patients retinal blood may be decreased.
- Conditions
- Open Angle Glaucoma, Normal Tension Glaucoma, Healthy
- Trial name
- LSFG Repro (NCT04014933)
- Testing
- LASER SPECKLE FLOWGRAPHY
- Where
- Switzerland
- Volunteers
- 44 people, healthy volunteers welcome
- Sponsor
- University of Zurich
Headache, Migraine
Acetazolamide's Headache Inducing Characteristics and Effects on the Cerebral Arteries and Blood Flow
In this study the investigators will research the hypothesis that the drug Acetazolamide induce headache and dilation of cerebral arteries and increase the cerebral blood flow in the areas of the brain supplied by these arteries.
- Trial name
- NCT01750723
- Testing
- Acetazolamide
- Where
- 2 sites in Denmark
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Danish Headache Center
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
Aerobic Capacity, Blood Flow Restriction (BFR) Training Effects
Low-Intensity BFR Cycling: Impact on VO₂Max and Muscle Adaptations
This study aims to investigate the effects of low-intensity cycling exercise combined with blood flow restriction (BFR) on maximal oxygen consumption (VO₂max), muscle strength, and muscle thickness in sedentary adult males.
- Conditions
- Aerobic Capacity, Blood Flow Restriction (BFR) Training Effects, Blood Flow Restriction Exercise, Muscle Strengh
- Trial name
- NCT07114835
- Testing
- Cycling with Blood Flow Restriction (15 min at 40% VO₂max with 60-80% LOP), Cycling Exercise (40 min at 40% VO₂max), Short-Duration Cycling Control (15 min at 40% VO₂max)
- Where
- Turkey (Türkiye)
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Kahramanmaras Sutcu Imam University