Clinical trials: Blood Circulation, open to volunteers
Dexmedetomidine, Sedation
Safety Exploration and Evaluation of Dexmedetomidine Hydrochloride Nasal Spray for Pre-anesthesia Sedation in Low-Monitoring Settings
The goal of this clinical trial is to assess the viability of dexmedetomidine hydrochloride nasal spray under minimal or no supervision and to further investigate novel clinical applications for this medication.
- Conditions
- Dexmedetomidine, Sedation, Safety, Preanesthetic Medication
- Trial name
- NCT07298525
- Testing
- Dexmedetomidine hydrochloride nasal spray
- Volunteers
- 564 people, healthy volunteers welcome
- Sponsor
- Sichuan Provincial People's Hospital
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
Healthy Volunteers, Low Back Pain
Effects of Blood Flow Restriction Exercises on Lumbar Muscle Endurance and Balance in Healthy Young Adults
This study aims to examine the effects of blood flow restriction (BFR) exercises on back muscle endurance and balance in healthy young adults.
- Conditions
- Healthy Volunteers, Low Back Pain, Postural Balance, Muscle Fatigue
- Trial name
- BFR-LUMBEX (NCT07182812)
- Testing
- Blood Flow Restriction Sit-to-Stand Exercise, Sit-to-Stand Exercise without Blood Flow Restriction
- Where
- Turkey (Türkiye)
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- Mehmet Akif Guler
Inactivity/Low Levels of Exercise
Handgrip Training and Brain Blood Flow Regulation
This study aims to investigate the effect of isometric handgrip training on brain blood vessel function in physically inactive adults.
- Trial name
- NCT07223645
- Testing
- Handgrip Training
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Florida State University
Retinal Blood Flow
Measurement of Total Retinal Blood Flow and Oxygen Extraction in Patients With Diabetes and Healthy Subjects
The prevalence of diabetes and diabetes-associated complications is still increasing. Several major long-term complications of diabetes such as cardiovascular disease, chronic renal failure, diabetic retinopathy and others relate…
- Trial name
- NCT03552562
- Testing
- Fourier Domain Color Doppler Optical Coherence Tomography (FDOCT)
- Where
- Austria
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Medical University of Vienna
Postprandial Hypotension, Healthy
GastroFlow: Investigation of the Gastrointestinal Blood Flow in Patients With Postprandial Hypotension
This project will describe the mechanisms of action and the relative contributions of GIP to changes in gastrointestinal blood flow induced by oral glucose and endogenous GIP with the use of a receptor antagonists GIP(3-30)NH2 in…
- Conditions
- Postprandial Hypotension, Healthy, Blood Flow
- Trial name
- Gastroflow (NCT07381816)
- Testing
- MRI + GIPR antagonist (Tool), MRI + hangrip, Saline and oral glucose
- Where
- Denmark
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- University of Copenhagen
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
Cervical Cancer, Cervical Intraepithelial Neoplasm
The Role of Blood Perfusion in Cervical Cancer, Cervical Intraepithelial Neoplasm and Ovarian Cancer Patients
This study will elucidate the role of 3D transvaginal ultrasound in assessing (1) cervical vascularity and blood flow in patients with cervical cancer and cervical intraepithelial neoplasm, and (2) tumor vascularity and blood…
- Conditions
- Cervical Cancer, Cervical Intraepithelial Neoplasm, Ovarian Cancer
- Trial name
- NCT07385976
- Testing
- Doppler ultrasound
- Where
- 2 sites in Taiwan
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Far Eastern Memorial Hospital
Brain Blood Flow Impairment
Longitudinal Investigation of Brain Blood Flow Changes in Neurosurgical Patients
Primary study objective: Longitudinal observation of brain blood flow changes in neurosurgical patients with or without a neurosurgical intervention as compared to a healthy cohort.
- Trial name
- NCT04668261
- Testing
- Advanced imaging investigation
- Where
- Switzerland
- Volunteers
- 400 people, healthy volunteers welcome
- Sponsor
- University of Zurich
Hospital Associated Disability, Immobility
Targeting Muscle Strength Loss Due to Hospitalization in Older Adults by Blood-flow Restriction Combined With an Electromyography-driven Serious Game.
This study investigates a new training method designed to help older adults preserve their muscle strength during hospitalization.
- Conditions
- Hospital Associated Disability, Immobility, Older Adults (65 Years and Older)
- Trial name
- GHOSTLY+ (NCT07294131)
- Testing
- Gamified isometric strength training with blood flow restriction, Standard Physiotherapy
- Where
- 3 sites in Belgium
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Vrije Universiteit Brussel
Thrombosis, Blood Coagulation Disorder
Dynamics of Platelet Activation in Patients With Ventricular Assist Device (VAD)
Consenting patients with end-stage heart failure that are implanted with/candidates for implant of a short-term/durable mechanical circulatory support device (e.g.: percutaneous microaxial pumps (Impella), extracorporeal membrane…
- Conditions
- Thrombosis, Blood Coagulation Disorder, Platelet Thrombus, Platelet Dysfunction Due to Aspirin
- Trial name
- PASVAD (NCT03255928)
- Testing
- PAS assay, TGT
- Where
- Italy
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Scientific Institute San Raffaele
Ventilator Acquired Pneumonia, Central Line Associated Blood Stream Infections (CLABSI)
Evidence-Based Nursing to Reduce Adverse Events Regarding Ventilator Associated Pneumonia, Pressure Injuries and Central Line Bloodstream Infection in Intensive Care Unit in Bangladesh
Quality of care is crucial for preventing adverse events such as infection in the intensive care units (ICUs). The most common ICU-acquired infections include pneumonia such as Ventilator Associated Pneumonia (VAP), Pressure…
- Conditions
- Ventilator Acquired Pneumonia, Central Line Associated Blood Stream Infections (CLABSI), Pressure Ulcer (PU), Medical Device Related Pressure Ulcer (MDRPU)
- Trial name
- EBP in Nursing (NCT07299799)
- Testing
- Education with EBP, This is a pre- and post- quasi-experimental study.
- Where
- 2 sites in Bangladesh, Japan
- Volunteers
- 272 people, healthy volunteers welcome
- Sponsor
- Hiroshima University
HFpEF
Muscle Blood Flow Regulation in HFpEF
Heart failure with preserved ejection (HFpEF) disproportionately affects Veterans and is the number one reason for hospital discharge in the VA Health Care System.
- Trial name
- NCT05115890
- Testing
- Exercise training
- Where
- United States
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- VA Office of Research and Development
Healthy Subjects/Volunteers
Effects of Combined Heat Application and Acupressure to the Carotid Artery Region on Cerebral Blood Flow in Healthy Adults
The aim of this study is to investigate the effects of combined heat application and acupressure to the carotid artery region on cerebral blood flow in healthy adults
- Trial name
- NCT07324226
- Testing
- Combined heat and acupressure
- Where
- South Korea
- Volunteers
- 9 people, healthy volunteers welcome
- Sponsor
- Pusan National University Yangsan Hospital
Coronary Artery Disease
Utilizing Carbon Dioxide for Assessing Coronary Blood Flow in Subjects With Coronary Artery Disease
This is a prospective pilot study to evaluate the safety, tolerability and technical feasibility of utilizing carbon dioxide for assessing coronary blood flow in subjects with coronary artery disease.
- Trial name
- NIMO-CAD (NCT06253884)
- Testing
- RespirAct
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Indiana University
Endometriosis
Endometriosis and Microvascular Dysfunction: Role of Inflammation
The purpose of this study is to better understand the underlying mechanisms associated with elevated cardiovascular disease risk in women with endometriosis, and to measure the effectiveness of emerging endometriosis treatments…
- Trial name
- Endo3/SA2 (NCT05069740)
- Testing
- Salsalate Pill
- Where
- United States
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Penn State University
Cerebral Blood Flow, Cerebral Blood Flow Regulation
The Role of Estrogen and Testosterone in Determining Brain Blood Flow and Metabolic Regulation in Humans
Due to historical exclusion of females from research, there are gaps in the understanding of female physiology, how it differs from males, and how sex-specific hormones contribute.
- Conditions
- Cerebral Blood Flow, Cerebral Blood Flow Regulation, Sex Differences, Exercise
- Trial name
- NCT07212712
- Testing
- GnRH antagonist, Estradiol (E2), Testosterone
- Where
- Canada
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- University of British Columbia
Muscle Strength, Athletic Performance
Nordic vs Blood Flow Restriction Nordic Exercise in Elite Female Pole Vaulters
The purpose of this randomized controlled trial is to compare the effects of Nordic Hamstring Exercise (NHE) and Blood Flow Restriction-assisted Nordic Hamstring Exercise (BFR-NHE) on hamstring muscle strength, muscle morphology…
- Conditions
- Muscle Strength, Athletic Performance, Hamstring Adaptation, Sports Injury Prevention
- Trial name
- NCT07705698
- Testing
- Nordic Hamstring Exercise, Blood Flow Restriction-Assisted Nordic Hamstring Exercise
- Where
- Turkey (Türkiye)
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- Toros University
Dynapenia
Blood Flow Restriction Parameters and Lower Limb Function in Older Adults With Dynapenia
The objective of the first year is to collect limb occlusion pressure (LOP) measurements in older adults with varying levels of muscle health, which will serve as foundational data for subsequent investigations on blood flow…
- Trial name
- NCT07534150
- Testing
- Blood Flow Restriction, Conventional Resistance Training
- Where
- Taiwan
- Volunteers
- 720 people, healthy volunteers welcome
- Sponsor
- Kaohsiung Medical University
Glaucoma
Retinal Blood Flow and Autoregulation
The purpose of this study is to establish autoregulation of retinal blood flow in arterioles and capillaries as a biomarker for early primary open angle glaucoma.
- Trial name
- NCT05344274
- Testing
- Indocyanine Green Angiography, Isocapnic Oxygen, Ocular Imaging with Optical Coherence Tomography (OCT) and Adaptive Optics (AO)
- Where
- 4 sites in United States
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- University of Maryland, Baltimore