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Showing 1–24 of 40 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Microvascular Circulation Clear all
Terminated Phase 1Phase 2 Interventional

TRF-1101 Assessment in Sickle Cell Disease

NCT00773890
View directory record Official record
Conditions
Sickle Cell Disease
Interventions
TRF-1101, Placebo
Drug
Lead sponsor
TRF Pharma, Inc
Industry
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
6
States / cities
Washington D.C., District of Columbia • Augusta, Georgia • Chicago, Illinois + 3 more
Source: ClinicalTrials.gov public record
Updated May 10, 2009 · Synced Sep 3, 2026, 4:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Exercise Training for Patients With Poor Leg Circulation

NCT00118560
View directory record Official record
Conditions
Diabetes Mellitus, Type 2, Intermittent Claudication
Interventions
Physical exercise, Physical walking
Behavioral
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
1
States / cities
West Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 16, 2011 · Synced Sep 3, 2026, 4:05 AM EDT
Not listed No phase listed Observational

Observational Study of Sublingual Microcirculatory Blood Flow Characteristics in Patients Undergoing Transthoracic Esophagectomy

NCT02263664
View directory record Official record
Conditions
Transthoracic Esophagectomy
Interventions
Not listed
Lead sponsor
University of Virginia
Other
Eligibility
18 Years to 75 Years
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Jun 22, 2015 · Synced Sep 3, 2026, 4:05 AM EDT
Terminated Phase 1Phase 2 Interventional Results available

Safety and Efficacy of Sodium Nitrite in Sickle Cell Disease

NCT01033227
View directory record Official record
Conditions
Sickle Cell Disease
Interventions
sodium nitrite injection, usp
Drug
Lead sponsor
Children's Hospital Los Angeles
Other
Eligibility
8 Years to 23 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Oct 16, 2017 · Synced Sep 3, 2026, 4:05 AM EDT
Withdrawn Phase 4 Interventional Accepts healthy volunteers

Neural Mechanism of Aldosterone-induced Insulin Resistance

NCT02102243
View directory record Official record
Conditions
Hypertension
Interventions
DEFINITY® infusion, Human Recombinant Regular Insulin infusion, Dextrose infusion, Flow mediated vasodilation, Endothelial cell collection, Microvascular perfusion assessment using Definity, Microneurography
Drug · Procedure
Lead sponsor
Wanpen Vongpatanasin
Other
Eligibility
18 Years to 75 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2025
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Mar 14, 2023 · Synced Sep 3, 2026, 4:05 AM EDT
Completed Not applicable Interventional

The Effect of NADPH Oxidase and Creatine Supplementation on Microvascular Blood Flow Regulation

NCT06018480
View directory record Official record
Conditions
Endothelial Dysfunction
Interventions
Creatine Monohydrate, Maltodextrin (Placebo)
Other
Lead sponsor
Florida State University
Other
Eligibility
18 Years to 70 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Tallahassee, Florida
Source: ClinicalTrials.gov public record
Updated May 15, 2024 · Synced Sep 3, 2026, 4:05 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Cheese Consumption and Human Microvascular Function

NCT03376555
View directory record Official record
Conditions
Microvascular Dysfunction
Interventions
Low sodium no cheese, Low sodium cheese, High sodium no cheese, High sodium cheese
Dietary Supplement
Lead sponsor
Lacy Alexander
Other
Eligibility
55 Years to 75 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 3, 2025 · Synced Sep 3, 2026, 4:05 AM EDT
Recruiting No phase listed Observational

Effect of the Stellate Ganglion Block on the Retinal Microcirculation

NCT06797752
View directory record Official record
Conditions
OCTA, Severe Brain Injury, Subarachnoid Hemorrhage, Intracerebral Hemorrhage
Interventions
OCTA Scan
Device
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Nov 18, 2025 · Synced Sep 3, 2026, 4:05 AM EDT
Enrolling by invitation Not applicable Interventional

Ultrasonic Perfusion Imaging in Post-mastectomy Irradiated Patients

NCT04992650
View directory record Official record
Conditions
Breast Reconstruction, Radiation Dermatitis, Radiation Fibrosis, Fat Grafting
Interventions
Fat grafting
Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older · Female only
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 31, 2026 · Synced Sep 3, 2026, 4:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Non-invasive Measurement of Microvascular Blood Flow During Mild External Compression of the Leg

NCT01804478
View directory record Official record
Conditions
Diabetes, Healthy
Interventions
Mild pneumatic compression
Behavioral
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2013
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Mar 4, 2013 · Synced Sep 3, 2026, 4:05 AM EDT
Terminated Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Peripheral Vascular Effects of Sulfhydryl-containing Antihypertensive Pharmacotherapy on Microvessels in Humans

NCT03179163
View directory record Official record
Conditions
Hypertension,Essential
Interventions
Captopril Pill, Enalapril Pill, Hydrochlorothiazide
Drug
Lead sponsor
Penn State University
Other
Eligibility
40 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2022
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 27, 2024 · Synced Sep 3, 2026, 4:05 AM EDT
Enrolling by invitation Phase 2 Interventional

Inhaled Nitric Oxide for Microvascular Dysfunction in Traumatic Brain Injury

NCT05616910
View directory record Official record
Conditions
Traumatic Brain Injury
Interventions
inhaled nitric oxide
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 75 Years
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 16, 2026 · Synced Sep 3, 2026, 4:05 AM EDT
Completed No phase listed Observational

The Effect of Three Different Fluids(Albumin 5%, Normal Saline, Hydroxyethyl Starch 130 kD) on Microcirculation in Severe Sepsis/Septic Shock Patients

NCT01319630
View directory record Official record
Conditions
Severe Sepsis, Septic Shock, Microcirculation
Interventions
Sidestream Dark Field (SDF), Near Infrared Spectroscopy (NIRS)
Device
Lead sponsor
Mercy Research
Other
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 25, 2017 · Synced Sep 3, 2026, 4:05 AM EDT
Completed Not applicable Interventional Results available

Comparison of Orbital Versus Rotational Atherectomy Effects On Coronary Microcirculation in PCI

NCT03021577
View directory record Official record
Conditions
Coronary Artery Disease (CAD)
Interventions
Orbital Atherectomy System (OAS), Rotablator Rotational Atherectomy System, Magnetic Resonance Imaging (MRI)
Device · Procedure
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 5, 2025 · Synced Sep 3, 2026, 4:05 AM EDT
Enrolling by invitation No phase listed Observational

Serial PET MPI in Patients Undergoing Cancer Treatment

NCT05913999
View directory record Official record
Conditions
Cancer, Chemotherapeutic Toxicity, Coronary Artery Disease, Coronary Microvascular Disease
Interventions
Not listed
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Aug 5, 2025 · Synced Sep 3, 2026, 4:05 AM EDT
Completed Not applicable Interventional

Feasibility Study of Cryotherapy for Chronic Venous Disorders

NCT00617825
View directory record Official record
Conditions
Venous Insufficiency
Interventions
cyrotherapy as a cool gel wrap
Other
Lead sponsor
Medical University of South Carolina
Other
Eligibility
45 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jun 14, 2018 · Synced Sep 3, 2026, 4:05 AM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Endometriosis and Microvascular Dysfunction: Role of Inflammation

NCT05069740
View directory record Official record
Conditions
Endometriosis
Interventions
Salsalate Pill, Placebo
Drug
Lead sponsor
Penn State University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 26, 2026 · Synced Sep 3, 2026, 4:05 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Effects of Nebivolol on Skeletal Muscle During Exercise in Hypertensive Patients

NCT01501929
View directory record Official record
Conditions
Hypertension
Interventions
Metoprolol succinate, Nebivolol, Non-invasive measurement of Cardiac Output (CO), Endothelial cell collection, Microvascular perfusion assessment using Definity
Drug · Procedure
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2015
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Nov 5, 2018 · Synced Sep 3, 2026, 4:05 AM EDT
Recruiting No phase listed Observational

Assessment of Microvascular Circulation in the Pediatric Cardiac Surgery Patient

NCT07184476
View directory record Official record
Conditions
Tetrology of Fallot
Interventions
Not listed
Lead sponsor
Boston Children's Hospital
Other
Eligibility
1 Day to 17 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 27, 2026 · Synced Sep 3, 2026, 4:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Microvascular Blood Flow in Sickle Cell Anemia

NCT01566890
View directory record Official record
Conditions
Sickle Cell Disease, Sickle Cell Anemia
Interventions
regadenoson infusion with contrast-enhanced ultrasound, contrast-enhanced ultrasound
Drug · Procedure
Lead sponsor
Versiti Blood Health
Other
Eligibility
18 Years to 70 Years
Enrollment
91 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2020
U.S. locations
2
States / cities
Chicago, Illinois • Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jun 25, 2024 · Synced Sep 3, 2026, 4:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Passive Limb Movement Study

NCT05935670
View directory record Official record
Conditions
Stroke, Vascular Diseases, Ischemic
Interventions
Ischemic Conditioning
Device
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years to 85 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Sep 3, 2026, 4:05 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Whole-Heart Myocardial Blood Flow Quantification Using MRI

NCT03064295
View directory record Official record
Conditions
Coronary Artery Disease, Coronary Microvascular Disease
Interventions
Myocardial Perfusion Cardiac MRI., Contrast, Pharmacologic Stress Agent
Device · Drug
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
18 Years and older
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2025
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Feb 7, 2023 · Synced Sep 3, 2026, 4:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Yoga Training and Retinal Vasculature

NCT06099405
View directory record Official record
Conditions
Cognitive Change
Interventions
High-speed, Cognitive Challenge Yoga, Traditional yoga
Behavioral
Lead sponsor
University of Miami
Other
Eligibility
60 Years to 90 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Coral Gables, Florida
Source: ClinicalTrials.gov public record
Updated May 29, 2025 · Synced Sep 3, 2026, 4:05 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Compromised Microcirculation in Women With Polycystic Ovary Syndrome

NCT00757185
View directory record Official record
Conditions
Polycystic Ovary Syndrome
Interventions
ganirelix acetate, methyl testosterone
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 35 Years · Female only
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2012
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 3, 2016 · Synced Sep 3, 2026, 4:05 AM EDT