Clinical trials: Blood Circulation Disorder
Hypotension (MeSH: D007022)
Carotid Artery Blood Flow, Blood Pressure, and Cardiac Output During Anesthesia in Children Aged 0-5 Years
Blood pressure is routinely monitored during anesthesia in children, but blood pressure alone may not accurately reflect blood flow to vital organs.
- Trial name
- CARFLOW (NCT07847203)
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Karolinska Institutet
Cerebrovascular Disorders, Cerebrovascular Disease
Development of a Clinically-relevant Test for Assessment of Cerebral Vascular Function
The goal of this study is to develop a test of cerebral vessel function by inducing a reactive hyperemia that will elicit a rapid and profound increase in cerebral vessel shear stress.
- Trial name
- NCT04336852
- Testing
- Flow mediated dilation (brachial and femoral arteries), Cerebral vascular reactivity to carbon dioxide (CO2), Cerebral vascular function test
- Where
- 2 sites in United States
- Volunteers
- 2 people, healthy volunteers welcome
- Sponsor
- University of Illinois Chicago
Compartment Syndrome
Study of New Catheter & Pressure Monitor System to Help Prevent Compartment Syndrome From Developing in the Injured Leg
An investigation of a new catheter and pressure monitor system that may help to prevent a complication called compartment syndrome from developing in an injured leg.
- Trial name
- TS2 (NCT00681616)
- Testing
- Compartment Monitoring System (CMS), Compartment Monitoring System with Active Fluid Removal, Compartment Monitoring System without fluid removal
- Where
- 13 sites in United States
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Twin Star Medical, Inc.
Obstructive Sleep Apnea of Adult, Hypoxia, Brain
Cerebral Blood Flow and Ventilatory Responses During Sleep in Normoxia and Intermittent Hypoxia
A prospective double blind, placebo-controlled, randomized cross-over trial to evaluate the effect of lowering cerebral blood flow on the ventilatory chemoreflexes (acute hypoxic and hypercapnic ventilatory responses).
- Conditions
- Obstructive Sleep Apnea of Adult, Hypoxia, Brain, Sleep Apnea, Sleep Disorder
- Trial name
- NCT03255408
- Testing
- Drug Lowering Cerebral Blood Flow (CBF) and Normoxia Sleep, Drug Lowering CBF and Intermittent Hypoxia Sleep
- Where
- Canada
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- University of Calgary
Migraine
Influence of Ubrogepant and Sumatriptan on the Dermal Blood Flow Response to Histamine, Cinnamaldehyde and Capsaicin
The involvement of calcitonin gene-related peptide (CGRP) in the cinnamaldehyde-induced dermal blood flow increase and in the mechanism of action of triptans will be investigated.
- Trial name
- NCT05654298
- Testing
- Sumatriptan, Ubrogepant
- Where
- Belgium
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Universitaire Ziekenhuizen KU Leuven
Major Depressive Disorder
Multimodal MRI Characteristics of Psychotherapy Response in Late Life Depression
The specific focus of this study is to gather data regarding the effects of a psychological therapy known as Problem Solving Therapy (PST) on cerebral blood flow (CBF), cortical gray matter (GM) atrophy, subcortical white matter…
- Trial name
- PRS (NCT02440815)
- Testing
- Problem Solving Therapy
- Where
- United States
- Volunteers
- 108 people, healthy volunteers welcome
- Sponsor
- University of California, San Francisco
Open Angle Glaucoma, Normal Tension Glaucoma
Study on Ocular Blood Flow and the Orbital Cerebrospinal Fluid Pressure in Glaucoma
Ocular blood flow has been consistently demonstrated to be altered in glaucoma patients when compared to otherwise healthy individuals.
- Trial name
- NCT01802463
- Where
- Belgium
- Volunteers
- 197 people, healthy volunteers welcome
- Sponsor
- Universitaire Ziekenhuizen KU Leuven
Cognitive Decline, Cognitive Dysfunction
Brain Vascular and Neurocognitive Health
The overall research objective of this proposal is to determine the acute and chronic impact of transcranial photobiomodulation on indices of cerebral vascular health and neurocognitive function.
- Conditions
- Cognitive Decline, Cognitive Dysfunction, Alzheimer Disease, Vascular Disease, Peripheral
- Trial name
- NCT06497413
- Testing
- Transcranial Photobiomodulation, Transcranial Photobiomodulation helmet (Neuradiant 1070 Plus) with no light administered
- Where
- United States
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- The University of Texas at Arlington
Glaucoma
Effects of Common Topical Glaucoma Therapy on Optic Nerve Head Blood Flow Autoregulation During Increased Arterial Blood Pressure and Artificially Elevated Intraocular Pressure in Healthy Humans
Background Autoregulation is the ability of a vascular bed to maintain blood flow despite changes in perfusion pressure. The existence of an effective autoregulation in the optic nerve circulation has been shown in animals and…
- Trial name
- NCT00275756
- Testing
- Timolol (drug), dorzolamide (drug), brimonidine (drug)
- Where
- Austria
- Volunteers
- healthy volunteers welcome
- Sponsor
- Medical University of Vienna
Partial Epilepsy
Serotonin Receptors in Seizure Disorders
Patients in this study will undergo PET scans (a type of nuclear imaging test) to look for abnormalities in certain brain proteins associated with seizures.
- Trial name
- NCT00001932
- Where
- United States
- Volunteers
- 95 people, healthy volunteers welcome
- Sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)
Consciousness, Level Altered
The Neural Mechanisms of Anesthesia and Human Consciousness
The explanation of consciousness poses one of the greatest challenges to science and philosophy in the 21st century. It remains unclear what consciousness is and how it emerges from brain activity.
- Trial name
- LOC-2013 (NCT01889004)
- Testing
- Dexmedetomidine, Propofol
- Where
- Finland
- Volunteers
- 47 people, healthy volunteers welcome
- Sponsor
- University of Turku
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
CSF Leak, CSF Pressure Increased
Conservative vs Interventional Management of Postsurgical CSF Pseudomeningocele
Dear Sir or Madam, You have been invited to participate in a clinical study whose aim is to compare the effectiveness of two different approaches to the treatment of cerebrospinal fluid (CSF) pseudomeningocele - conservative…
- Conditions
- CSF Leak, CSF Pressure Increased, CSF Circulation Disorder, Puncture
- Trial name
- PSEUDO (NCT07614399)
- Testing
- Lumbar Drainage, Pseudomeningocele Puncture, Puncture with Fibrin Glue Application
- Where
- Czechia
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Charles University, Czech Republic
Vascular Disease, Heart Disease
Effects of Urocortins on Forearm Arterial Blood Flow in Healthy Volunteers (Protocol 3)
Impairment of the heart's pumping capacity (heart failure) remains a major clinical problem with a poor prognosis and the search for novel treatments remains an important area of research.
- Trial name
- NCT01096706
- Testing
- NO clamp, Saline, Fluconazole
- Where
- United Kingdom
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- University of Edinburgh
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
Breast Cancer
Effects of Electrical Stimulation on Blood Circulation and Sensibility Tactil in Lymphadenectomy
The aim of this study is to investigate the influence of electrical stimulation at the speed of blood circulation and tactile sensitivity of the arms of women who underwent axillary dissection for breast cancer.
- Trial name
- NCT01893957
- Testing
- high voltage electrical stimulation - axillary lymphadenectomy, High voltage electrical stimulation - ( healthy women ), Neurodyn High Volt Model (IBRAMED)
- Where
- Brazil
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- University of Sao Paulo
Diabetic Autonomic Neuropathy, Gastrointestinal Motility Disorder
Gastrointestinal Motility Among Diabetes Patients
Gastrointestinal (GI) symptoms including vomiting, nausea, abdominal pain, constipation or chronic diarrhea affect a large number of patients with diabetes mellitus (DM).
- Conditions
- Diabetic Autonomic Neuropathy, Gastrointestinal Motility Disorder, Diabetes Mellitus, Change of Transit or Circulation
- Trial name
- NCT02573519
- Testing
- 11C Donepezil PET/CT scan, 3D-Transit, 3D-Transit during treatment with Pyridostigmine
- Where
- Denmark
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- University of Aarhus
Schizophrenia
Brain Blood Flow Changes Elicited by Oxytocin in Volunteers With and Without Schizophrenia
The purpose of this study is to assess how oxytocin delivered intranasally changes regional brain blood flow measured by positron emission tomography (PET) in conjunction with oxygen-15 labeled water in persons with…
- Trial name
- NCT01123317
- Testing
- Oxytocin
- Where
- United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- University of Maryland, Baltimore
Healthy, Brain Insulin Sensitivity
Long-Term Effects of Walnut Consumption on Brain Function
Rationale: Healthy foods, including mixed nuts, may improve brain function, which is essential for cognitive and metabolic health, and may contribute to improved food intake regulation.
- Conditions
- Healthy, Brain Insulin Sensitivity, Cerebral Blood Flow, Brain Vascular Function
- Trial name
- WalBrain (NCT07422220)
- Testing
- Walnuts
- Where
- Netherlands
- Volunteers
- 55 people, healthy volunteers welcome
- Sponsor
- Maastricht University 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