Clinical trials: Blood Volume
Heart Failure, High Blood Pressure
BVA-200 vs BVA-100 Validation Study
The proposed study is a prospective, observational, investigator and patient blinded study comparing the results of blood volume measurement using the FDA-cleared Daxor BVA-100 device to the Daxor BVA-200 device.
- Conditions
- Heart Failure, High Blood Pressure, High Cholesterol, Anemia
- Trial name
- NCT06227819
- Testing
- BVA-200
- Where
- United States
- Volunteers
- 62 people, healthy volunteers welcome
- Sponsor
- Daxor Corporation
Healthy
Capillary Blood Volume and Pain Perception Obtained in a Process of Puncturing With Different Safety Lancets
The study was a randomized, single blind, uni-center pivotal study in male and female healthy volunteers, to determine capillary blood volume and pain perception obtained in a process of puncturing with different safety lancets.
- Trial name
- NCT03752229
- Testing
- Acti-Lance Lite, Acti-Lance Universal, Acti-Lance Special
- Where
- Poland
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- HTL-Strefa S.A.
Alcoholism, Healthy
The Effect of Positive and Negative Emotions on Brain Activity in Alcoholics and Nonalcoholics
This study was designed to learn more about the areas of the brain involved in the experience of positive and negative emotions.
- Trial name
- NCT00001675
- Where
- United States
- Volunteers
- 1,194 people, healthy volunteers welcome
- Sponsor
- National Institute on Alcohol Abuse and Alcoholism (NIAAA)
Cognitive Deterioration, Disorder of Aging
Exercise, Age-Related Memory Decline, And Hippocampal Function
The purpose of this study is to test the hypothesis that aerobic exercise leads increased cerebral blood volume in the dentate gyrus of the hippocampus in a sample of young and older adults.
- Trial name
- NCT01329653
- Testing
- aerobic training, Wait list
- Where
- United States
- Volunteers
- 233 people, healthy volunteers welcome
- Sponsor
- New York State Psychiatric Institute
Healthy Volunteer, Magnetic Resonance Imaging
Study of New Magnetic Resonance Imaging Methods of the Brain
The purpose of this investigation is to develop improved magnetic resonance imaging (MRI) techniques and hardware for studying brain function.
- Conditions
- Healthy Volunteer, Magnetic Resonance Imaging, Healthy, fMRI
- Trial name
- NCT00004577
- Where
- United States
- Volunteers
- 1,100 people, healthy volunteers welcome
- Sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)
Healthy Participants
The Effects of Strength Training Volume, Intensity, and Breathing Techniques on Intraocular Pressure and Retinal Blood Vessels
This study aims to determine the effects of different breathing patterns on ocular vasculature and intraocular pressure (IOP) during isokinetic and isometric strength exercises.
- Trial name
- NCT07326462
- Testing
- Normal Breathing, Valsalva maneuver
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Lithuanian Sports University
Chronic Obstructive Pulmonary Disease
Oral Sildenafil for Exercise Capacity, Dyspnea and Cardiopulmonary Function in COPD
Chronic obstructive pulmonary disease (COPD) is a condition characterized by airway obstruction. Patients with COPD experience significant shortness of breath on exertion.
- Trial name
- NCT05061368
- Testing
- Sildenafil Citrate
- Where
- Canada
- Volunteers
- 160 people, healthy volunteers welcome
- Sponsor
- University of Alberta
Amnesia, Dementia
Magnetic Resonance Imaging for the Study of Patients With Neurological Disorders
This study is divided into two parts. The first part of the study will use MRI technology to view the brain structure of patients with neurological disorders and normal volunteers.
- Conditions
- Amnesia, Dementia, Healthy, Nervous System Disease
- Trial name
- NCT00001362
- Where
- United States
- Volunteers
- 830 people, healthy volunteers welcome
- Sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)
Blood Loss
Evaluation of the Zynex Blood Volume Monitor in Healthy Adult Patients During a Blood Draw
Non-invasive monitoring to measure changes in blood volume.
- Trial name
- NCT01846195
- Testing
- CM 1500
- Where
- United States
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Zynex Monitoring Solutions
Pulmonary Congestion
Thoracic Fluid Assessment by Contrast-enhanced Magnetic Resonance Imaging and Bioimpedance
Heart failure (HF) is a major health problem, which is characterized by reduced cardiac function leading to pulmonary congestion. Most episodes of acute HF requiring unplanned hospitalization are due to pulmonary congestion.
- Trial name
- NCT02364193
- Testing
- MRI, Gd-CA, BIS ImpediMed™ SFB7
- Where
- Netherlands
- Volunteers
- 14 people, healthy volunteers welcome
- Sponsor
- Catharina Ziekenhuis Eindhoven
Blood Loss
Noninvasive Monitor of Vascular Volume Fluid Shifts
Blood volume measurements are a critical step in the emergency care of trauma patients. The typical approach to this is to rely on historical information, physical examination and metrics such as heart rate.
- Trial name
- NCT05080881
- Testing
- phonocardiographic measurement: InnoVital Systems, phonocardiographic measurement: ThinkLabs StethOne, physiological measurements: BIOPAC
- Where
- United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- Dartmouth-Hitchcock Medical Center
Anemia
Placental Transfusion in Term Infants: A Pilot Study
The proposed study is a pilot prospective controlled trial to measure the blood volume left in the placenta after varying cord clamping times when the infant is placed skin-to-skin on the maternal abdomen.
- Trial name
- NCT01924572
- Testing
- cord clamping at 2 minutes, cord clamping at 5 minutes, cord milking
- Where
- United States
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- University of Rhode Island
Healthy
GLP-1's Effect on Cardiac Parameters and Mesenteric Blood Flow
to investigate the effect of the human incretin hormone GLP-1 on mesenteric blood flow and cardiac parameters
- Trial name
- NCT01988545
- Testing
- 1,5 nmol/kg,GLP-1 sc injection, 1,5 nmol/kg GLP-1 9-36amide, sc injection, Exendin-4 ;10 ug,sc injection
- Where
- Denmark
- Volunteers
- 8 people, healthy volunteers welcome
- Sponsor
- Zealand University Hospital
Autonomic Dysfunction, Autonomic Imbalance
Autonomic Cardiovascular Control in Response to Blood Volume Reduction in Blood Donors
The function of the autonomic nervous system can be assessed using baroreflex sensitivity (BRS) and heart rate variability (HRV).
- Conditions
- Autonomic Dysfunction, Autonomic Imbalance, Blood Loss
- Trial name
- NCT04499664
- Testing
- Monitoring of the autonomic nervous system
- Where
- Denmark
- Volunteers
- 25 people, healthy volunteers welcome
- Sponsor
- Hvidovre University Hospital
Healthy Volunteers
The Effect of Phenylephrine and Ephedrine on Microvascular Blood Flow
During operations to treat abdominal problems the blood pressure can fall, resulting in falls in blood flow to the vital organs. This fall can be treated by the administration of drugs that cause constriction of blood vessels.
- Trial name
- NCT02252627
- Testing
- Administration of phenylephrine, Measurement of stroke volume, Contrast enhanced ultrasound scan
- Where
- United Kingdom
- Volunteers
- 8 people, healthy volunteers welcome
- Sponsor
- University of Nottingham
HIV Infections
A Study Evaluating Implementation Strategies for the Delivery of Cabotegravir in Low and High-Volume PrEP Site in the United States
This is a two-arm study evaluating the impact of two implementation strategy conditions, dynamic implementation and routine implementation on the feasibility of delivering of Cabotegravir PrEP in low and high-volume PrEP sites in…
- Trial name
- PILLAR (NCT05374525)
- Testing
- APRETUDE, Cabotegravir OLI
- Where
- 17 sites in United States
- Volunteers
- 287 people, healthy volunteers welcome
- Sponsor
- ViiV Healthcare
Muscle Composition, Sarcopenia
Effects of Increased, Egg-Based Protein Intake on Muscle Composition,
This study is designed to assess the effect of a diet-controlled nutrition program utilizing an egg-based higher protein diet on muscle composition and size, and indices of metabolic health and markers of systemic inflammation in…
- Conditions
- Muscle Composition, Sarcopenia, Hypertrophy, Inflammation
- Trial name
- S25 (NCT01396915)
- Testing
- Dietary Protein Intake
- Where
- United States
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- Purdue University
Delayed Onset Muscle Soreness
The Effect of Low-Intensity Resistance Exercise Training
It was to compare the effect of low-load resistance training with blood flow restriction (LL-BFR) and high-intensity resistance training (HI-RT) on muscle strength, endurance and volume, functional performance, and delayed onset…
- Trial name
- NCT04755608
- Testing
- Low Intensity Exercises with Blood Flow Restriction, High Intensity Resistant Exercise
- Where
- Turkey (Türkiye)
- Volunteers
- 13 people, healthy volunteers welcome
- Sponsor
- Sultan Abdulhamid Han Training and Research Hospital, Istanbul, Turkey
Emotional Disorder
Metabolic Activation of Brain Areas With Emotional Stimuli Compared With Score in Psychological Test
Quantitative assessment of the activation of brain areas by functional magnetic resonance imaging (fRMI) in the face of positive and negative emotional stimuli using audiovisual materials validated for the local population and…
- Trial name
- fMRI (NCT04974437)
- Where
- Argentina
- Volunteers
- 16 people, healthy volunteers welcome
- Sponsor
- Instituto del Corazon, Argentina
Hypoxia, Confinement
Intravascular Volumes in Hypoxia During Antarctic Confinement
This study evaluates the effect of hypoxia on blood volumes during Antarctic winter-over confinement. Half of the participants will be evaluated during sea-level winter-over confinement, while the other half will be examined…
- Trial name
- ANTARCV (NCT04106401)
- Testing
- carbon-monoxide rebreathing, venous blood sampling, physical activity monitoring
- Where
- France
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Ecole Nationale des Sports de Montagne