Clinical trials: Microvascular Circulation
Cardiac Arrest
Microcirculatory Perfusion in Patients With Coma After Out-of-hospital Cardiac Arrest
The hypothesis is: In patients after an out of hospital cardiac arrest, treated with therapeutic hypothermia (33°C) will be found significantly more microcirculatory abnormalities, compared to the same group of patients treated…
- Trial name
- NCT01850485
- Testing
- microcirculation by SDF and NIRS, in 33 and 36 degrees
- Where
- Netherlands
- Volunteers
- 22 people
- Sponsor
- Frisius Medisch Centrum
Hypertension
Effects of Nebivolol on Skeletal Muscle During Exercise in Hypertensive Patients
The purpose of this study is to determine if Nebivolol improves microvascular perfusion in skeletal muscle during exercise in hypertensive patients and whether this improvement is accompanied by reduction in vascular oxidative…
- Trial name
- NCT01501929
- Testing
- Metoprolol succinate, Nebivolol, Non-invasive measurement of Cardiac Output (CO)
- Where
- United States
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- University of Texas Southwestern Medical Center
Raynaud Phenomenon
Beet the Cold: The Effect of Inorganic Nitrate Supplementation in Individuals With Raynaud's Phenomenon
Individuals with Raynaud's phenomenon often experience episodes of reduced blood flow to their fingers and toes during times of stress or cold exposure, causing significant discomfort and pain.
- Trial name
- NCT03129178
- Testing
- Concentrated beetroot juice
- Where
- United Kingdom
- Volunteers
- 27 people
- Sponsor
- University of Portsmouth
Circulatory Shock, Cardiovascular Shock
Physiologic Effect of Topical Nitroglycerin on Microcirculation Capacity in Patients With Circulatory Shock.
This is an open-label, single center, trial that will enroll up to 25 participants with circulatory shock after cardiac surgery.
- Trial name
- NCT05102734
- Testing
- Nitroglycerin Topical Product
- Where
- United States
- Volunteers
- 44 people
- Sponsor
- University of Pennsylvania
Sickle Cell Disease
Safety and Efficacy of Sodium Nitrite in Sickle Cell Disease
This study will determine if administration of sodium nitrite is safe and can improve small vessel blood flow and tissue oxygenation when given as an additional treatment in patients with acute vaso-occlusive crisis (pain crisis)…
- Trial name
- NCT01033227
- Testing
- sodium nitrite injection, usp
- Where
- United States
- Volunteers
- 5 people
- Sponsor
- Children's Hospital Los Angeles
Ischemia
Efficacy of Ambrisentan in Limited Scleroderma Patients in Improving Blood Flow to Hands or Feet
The purpose of this study is to investigate the effectiveness of a drug called ambrisentan, approved by the FDA for use in pulmonary hypertension (a condition where there is increased pressure in the right side of the heart) in…
- Trial name
- ambrisentan (NCT01072669)
- Testing
- ambrisentan
- Where
- United States
- Volunteers
- 20 people
- Sponsor
- Soumya Chatterjee
Acute Coronary Syndrome (ACS), High On-treatment Platelet Reactivity (HTPR)
The Effect of IV Cangrelor and Oral Ticagrelor Study
Major heart attacks are caused by a number of factors, the two major of which are furring up of a coronary artery with atheroma and then sudden clot formation on this area leading to a blockage and interruption of blood flow.
- Conditions
- Acute Coronary Syndrome (ACS), High On-treatment Platelet Reactivity (HTPR), Microvascular Obstruction (MVO), ST-segment Elevation Myocardial Infarction (STEMI)
- Trial name
- NCT02733341
- Testing
- Cangrelor, Ticagrelor
- Where
- United Kingdom
- Volunteers
- 100 people
- Sponsor
- The Royal Wolverhampton Hospitals NHS Trust
Septic Shock
High MAP in Septic Shock With Hypertension
We hypothesized that the increase in MAP from 65 mmHg to patients' usual level improved sublingual microcirculation.
- Trial name
- NCT01443494
- Testing
- NE
- Where
- China
- Volunteers
- 19 people, healthy volunteers welcome
- Sponsor
- Southeast University, China
Hypertension
Safety and Efficacy of Valsartan vs Atenolol and Hydrochlorothiazide Combination on Blood Flow in Hypertensive Patients
This study evaluated the effect of valsartan on small vessel blood flow in patients with mild-to-moderate hypertension in direct comparison to atenolol and hydrochlorothiazide.
- Trial name
- NCT00396656
- Testing
- Atenolol, Hydrochlorothiazide (HCTZ)), Valsartan
- Where
- 2 sites in Germany, Switzerland
- Volunteers
- 30 people
- Sponsor
- Novartis
Coronary Microcirculation, Coronary Artery Disease
Impact of Ranolazine on Coronary Microcirculatory Resistance
This study is being done to determine if Ranolazine treatment improves coronary microcirculation function among patients with coronary microcirculation dysfunction.
- Conditions
- Coronary Microcirculation, Coronary Artery Disease, Myocardial Disease, Ischemia
- Trial name
- NCT01815957
- Testing
- Rnalozine
- Where
- United States
- Volunteers
- 7 people
- Sponsor
- University of New Mexico
Ischemic Foot Ulcer
Intensive Insulin Treatment and Ischemic Foot Ulcer
We aim to investigate the relationship between skin microvascular function and the first hospitalization for ischemic foot ulcer in patients with type 1 diabetes former randomized during 7.5 years to intensified conventional…
- Trial name
- NCT01957930
- Testing
- Intensified insulin treatment, Standard treatment
- Where
- 2 sites in Sweden
- Volunteers
- 91 people, healthy volunteers welcome
- Sponsor
- Karolinska Institutet
Hypertension,Essential
Peripheral Vascular Effects of Sulfhydryl-containing Antihypertensive Pharmacotherapy on Microvessels in Humans
High blood pressure can cause physical changes to the blood vessels of the body (remodeling). If a person who has high blood pressure also has a lot of blood vessel remodeling with their condition, they are more likely to have…
- Trial name
- H2SPharm (NCT03179163)
- Testing
- Captopril Pill, Enalapril Pill, Hydrochlorothiazide
- Where
- United States
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- Penn State University
Coronary Artery Bypass Graft Triple Vessel
Effect of Prewarming on Microcirculatory Response
Intraoperative hypothermia may affect tissue microcirculation and can induce myocardial injury, wound infection, and coagulopathy.
- Trial name
- NCT02186210
- Testing
- prewarming
- Where
- South Korea
- Volunteers
- 40 people
- Sponsor
- Seoul National University Hospital
Standardised Claudication Treadmill Test
Evaluation of Musculoskeletal Microcirculation With Ultrasound
This study aims to validate the use of Dynamic Contrast-Enhanced Ultrasound in measuring the blood supply to the muscles of the leg, and how this changes with exercise and vascular pathology.
- Trial name
- EMMU (NCT02086331)
- Testing
- Contrast enhanced ultrasound, Treadmill test
- Where
- United Kingdom
- Volunteers
- 5 people, healthy volunteers welcome
- Sponsor
- Imperial College London
Shock, Cardiovascular Diseases
Evaluation of Microcirculatory Function and Mitochondrial Respiration After Cardiovascular Surgery
This study will examine the differences in microcirculatory function and mitochondrial respiration in patients with shock after cardiovascular surgery.
- Conditions
- Shock, Cardiovascular Diseases, Critical Illness
- Trial name
- MicroRESUS (NCT05330676)
- Testing
- coronary artery bypass grafting, valve repair/replacement
- Where
- United States
- Volunteers
- 142 people
- Sponsor
- University of Pennsylvania
Coronary Artery Disease (CAD)
Comparison of Orbital Versus Rotational Atherectomy Effects On Coronary Microcirculation in PCI
The investigators hypothesize that the orbital atherectomy system (OAS), a newer generation atherectomy device, reduces the incidence of microcirculatory compromise as compared to older generation rotational atherectomy (RA) due…
- Trial name
- ORACLE (NCT03021577)
- Testing
- Orbital Atherectomy System (OAS), Rotablator Rotational Atherectomy System, Magnetic Resonance Imaging (MRI)
- Where
- United States
- Volunteers
- 37 people
- Sponsor
- Columbia University
Microvascular Dysfunction
Cheese Consumption and Human Microvascular Function
Increased dairy intake is associated with improved measures of blood vessel health. Dairy cheese, however, is often high in sodium. Dietary sodium can impair blood vessel function.
- Trial name
- NCT03376555
- Testing
- Low sodium no cheese, Low sodium cheese, High sodium no cheese
- Where
- United States
- Volunteers
- 13 people, healthy volunteers welcome
- Sponsor
- Lacy Alexander
Sickle Cell Disease, Sickle Cell Anemia
Microvascular Blood Flow in Sickle Cell Anemia
Sickle cell disease (SCD) is an inherited blood disorder that causes the red blood cells to change their shape from a round shape to a half-moon/crescent or sickled shape.
- Trial name
- NCT01566890
- Testing
- regadenoson infusion with contrast-enhanced ultrasound, contrast-enhanced ultrasound
- Where
- 2 sites in United States
- Volunteers
- 91 people, healthy volunteers welcome
- Sponsor
- Versiti Blood Health