Clinical trials: Hypoperfusion
Metabolic Syndrome X
Mechanisms of Cerebrovascular Control
The objective of this study is to identify insulin-specific cerebral blood flow (CBF) control mechanisms, and establish cerebrovascular responsive baseline in younger (18-45 yrs) metabolic syndrome adults (MetSyn) who are at…
- Trial name
- NCT02936687
- Testing
- NOS Inhibition, ET-1 Inhibition, 3 Tesla MRI
- Where
- United States
- Volunteers
- 59 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Hypoperfusion
Using Fluorescence Angiography to Detect Occult Shock
The purpose of this study is to determine if fluorescence angiography can detect occult shock (hypoperfusion).
- Trial name
- NCT02846727
- Testing
- skin perfusion image
- Where
- United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- Yale University
Microvascular Disease, Microvascular Complications
Comparison of Differencens in VO2-max, Perfusion of the Heart and Brain and Cognitive Performance Between Patients with Type 2 Diabetes and Healthy Age Matched Controls.
In the aging population, ischemic heart disease, stroke and dementia are increasingly prevalent. Diagnosis and treatment of the former two i.e., large-vessel coronary heart disease and endovascular thrombectomy of the brain in…
- Conditions
- Microvascular Disease, Microvascular Complications, Dementia, Diabetes Mellitus Type 2
- Trial name
- SVAT (NCT06628297)
- Testing
- PET
- Where
- Denmark
- Volunteers
- 72 people, healthy volunteers welcome
- Sponsor
- University Hospital Bispebjerg and Frederiksberg
Intracranial Neoplasm, Hyperlactatemia
The Relationship of Anesthesia Method With Serum Lactate Level in Craniotomies
The investigators aimed to research the incidence of hyperlactatemia in craniotomy cases, the relationship of lactate elevation with tumor type and other factors that may be related, and whether the general anesthesia method…
- Conditions
- Intracranial Neoplasm, Hyperlactatemia, Brain Tumor, Hypoperfusion
- Trial name
- NCT05145049
- Where
- Turkey (Türkiye)
- Volunteers
- 110 people, healthy volunteers welcome
- Sponsor
- Ankara Diskapi Training and Research Hospital
Triage, Emergency Medical Services
Clinical Predictors of Capillary Refill Time and Their Association With Triage Categories
This observational study aims to determine the correlation between capillary refill time (CRT) and vital parameters in patients presenting to the emergency department.
- Conditions
- Triage, Emergency Medical Services, Vital Signs Monitoring, Hypoperfusion
- Trial name
- CRT_TriageER (NCT07054151)
- Testing
- No clinical intervention (observational study only)
- Where
- Turkey (Türkiye)
- Volunteers
- 313 people, healthy volunteers welcome
- Sponsor
- Izmir Democracy University
Multiple Sclerosis, Relapse
Coagulation/Complement Activation and Cerebral Hypoperfusion in Relapsing-remitting Multiple Sclerosis
This is a multi-center, prospective, controlled study. MS patients (1° group: 30 patients in relapse; 2° group: 30 patients in remission) and age/sex-matched healthy controls (3° group: 30 subjects) will be enrolled in the study.
- Trial name
- NCT04380220
- Testing
- Blood samples and processing
- Where
- 3 sites in United States, Italy
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Regina Elena Cancer Institute
Cerebral Hypoperfusion, Cerebral Occlusion
Evaluation of Cerebral Blood Flow and Cerebral Oxygenation With Transcranial Doppler and NIRS in Laparoscopic Cholecystectomy Cases
The goal of this clinical trial is to test intracranial blood flow and cerebral oxygenisation changes in patients who have pneumoperitoneum in laparoscopic cholecystectomy procedure.
- Conditions
- Cerebral Hypoperfusion, Cerebral Occlusion, Cholecystitis; Gallstone, Cholecystitis/Cholelithiasis
- Trial name
- NIRS L/C (NCT06036498)
- Testing
- Near Infrared Spectrophotometry Device, Transcranial Doppler Ultrasonography
- Where
- Turkey (Türkiye)
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Uludag University
Microvascular Disease, Microvascular Complications
Test of Reproducibility of [15O]H20-PET Assessment of Brain Perfusion
In the aging population, ischemic heart disease, stroke and dementia are increasingly prevalent. Diagnosis and treatment of the former two i.e., large-vessel coronary heart disease and endovascular thrombectomy of the brain in…
- Conditions
- Microvascular Disease, Microvascular Complications, Diabetes Mellitus Type 2, Cerebral Hypoperfusion
- Trial name
- SVAT (NCT06624267)
- Testing
- PET
- Where
- Denmark
- Volunteers
- 8 people, healthy volunteers welcome
- Sponsor
- University Hospital Bispebjerg and Frederiksberg
Gastrointestinal, Hypoperfusion
Effects of Citrulline on Gut Functioning During Excercise
During exercise, splanchnic perfusion is compromised, resulting in organ damage in healthy individuals. Improving the availability of NO might result increase splanchnic perfusion and prevent organ damage during exercise.
- Conditions
- Gastrointestinal, Hypoperfusion, Gut Damage
- Trial name
- NCT01239303
- Testing
- Citrulline, alanine
- Where
- Netherlands
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Maastricht University Medical Center
Multiple Sclerosis
Transcranial Electrical Stimulation in Multiple Sclerosis
First the investigators will examine if the blood flow in the brain is different in patients with Multiple Sclerosis compared to healthy volunteers. HOW? The blood flow of the subjects is imaged by use of a special MRI-technique.
- Trial name
- TEMS (NCT06966128)
- Testing
- transcranial Direct Current Stimulation
- Where
- 2 sites in Belgium
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Universitair Ziekenhuis Brussel
Healthy, Vasodilation
Impact of Intranasal Insulin on Sympathetic Activity and Cerebral Vasodilation
The purpose of this project is to examine the impact of increases in brain insulin on sympathetic nervous system activity, as well as peripheral and cerebral blood flow in humans.
- Conditions
- Healthy, Vasodilation, Insulin Resistance, Autonomic Dysfunction
- Trial name
- NCT05153395
- Testing
- Carbon dioxide breathing, Neurovascular Coupling, Human insulin
- Where
- United States
- Volunteers
- 65 people, healthy volunteers welcome
- Sponsor
- University of Missouri-Columbia
Multiple Sclerosis
Transcranial Doppler in Multiple Sclerosis
The aim of this study is to investigate the potential of Transcranial doppler (TCD) and Near-Infrared Spectroscopy (NIRS), more simple and non-invasive bedside methods than magnetic resonance imaging (MRI), to evaluate changes in…
- Trial name
- TRADOMS (NCT02389426)
- Testing
- TCD baseline, TCD after bosentan administration, NIRS baseline
- Where
- Belgium
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Universitair Ziekenhuis Brussel
Heart Failure, Dilated Cardiomyopathy
Brain Function and Perfusion in Patients With Heart Failure
The investigators will evaluate the determinants of cerebral impairment in patients with non-ischemic heart failure compared to controls, and its relation to cognitive function.
- Conditions
- Heart Failure, Dilated Cardiomyopathy, Perfusion, Cognitive Impairment
- Trial name
- BRAIN-HF (NCT01756014)
- Where
- Netherlands
- Volunteers
- 45 people, healthy volunteers welcome
- Sponsor
- University Medical Center Groningen
Cardiovascular Disease, Arterial Stiffness
Natural History Study of CADASIL
Background: CADASIL (cerebral autosomal dominant arteriopathy with subcortical infarct and leukoencephalopathy) is a genetic disorder. It causes narrowing of the small blood vessels and can lead to strokes and dementia.
- Conditions
- Cardiovascular Disease, Arterial Stiffness, Germline Mutation in the NOTCH 3 Gene, Pathogenesis of CADASIL
- Trial name
- NCT05072483
- Testing
- MRI
- Where
- United States
- Volunteers
- 155 people, healthy volunteers welcome
- Sponsor
- National Heart, Lung, and Blood Institute (NHLBI)
Magnetic Resonance Imaging, Cerebrovascular Circulation
Brain Blood Vessel Responses to Changes in Blood Flow: Younger Cohort
Brain blood flow will be measured during a simulated postural change test and while breathing increased levels of carbon dioxide using magnetic resonance imaging.
- Trial name
- NCT06629090
- Testing
- MRI, Prazosin
- Where
- United States
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Magnetic Resonance Imaging, Cerebrovascular Circulation
Brain Blood Vessel Responses to Changes in Blood Flow
Brain blood flow will be measured during a simulated postural change test and while breathing increased levels of carbon dioxide using magnetic resonance imaging.
- Trial name
- NCT06629077
- Testing
- MRI, Prazosin
- Where
- United States
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Perioperative/Postoperative Complications, Postoperative Cognitive Dysfunction
CEReBral AutorEgulation in Non-cardiac SuRgery and Relationship to Postoperative DeliriUm State
The goal of this observational study is to learn the how to determine the mean arterial pressure(MAP) or blood pressure level to be maintained during non-cardiac surgery for optimal brain health in patients above the age of 60…
- Conditions
- Perioperative/Postoperative Complications, Postoperative Cognitive Dysfunction, Postoperative Delirium, EEG With Periodic Abnormalities
- Trial name
- CERBERUS (NCT06133842)
- Testing
- Intra-op EEG and CO data collection
- Where
- United States
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Beth Israel Deaconess Medical Center
Microcirculatory Dysfunction, Tissue Hypoperfusion
Submental Tissue Oxygenation and Arterial Lactate in Major Surgery
During major surgical procedures performed under general anesthesia, changes in blood flow and oxygen delivery to tissues may occur due to blood loss, hemodynamic fluctuations, and anesthesia-related physiological effects.
- Conditions
- Microcirculatory Dysfunction, Tissue Hypoperfusion, Microcirculatory Status, Microvascular Circulation
- Trial name
- NCT07399275
- Testing
- No intervention. This is a prospective observational study. Near-infrared spectroscopy measurements are performed for monitoring purposes only and do not influence clinical management.
- Where
- Turkey (Türkiye)
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- Bursa Sevket Yilmaz Training and Research Hospital