Clinical trials: Microvascular Changes
Retinal Vascular, Retinal Disease
Perifoveal Vascular Network Assessed by OCT-Angiography in Type I Diabetes Mellitus
This study is directed to evaluate the role of Optical Coherence Tomography Angiography (OCT-A) in the evaluation of the perifoveal vascular network in type 1 diabetic patients, and to investigate the relationship between…
- Conditions
- Retinal Vascular, Retinal Disease, Retinal Ischemia, Retinal Ischaemia Due to Type 1 Diabetes Mellitus
- Trial name
- NCT03422965
- Testing
- Optical Coherence Tomography Angiography, Blood test, Urine test
- Where
- 2 sites in Spain
- Volunteers
- 600 people, healthy volunteers welcome
- Sponsor
- Hospital Clinic of Barcelona
Microcirculation
The Effect of Photobiomodulation on Microvascular Blood Flow: The Role of Wavelength and Skin Temperature
The objective of this study is to assess peripheral microcirculatory hemodynamic responses to photobiomodulation in participants with normal circulation and with functional peripheral vasoconstriction, using noninvasive…
- Trial name
- PBM&MBF01 (NCT07338695)
- Testing
- Photobiomodulation - Blue Wavelength, Photobiomodulation - Near Infrared
- Where
- Israel
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Afeka, The Tel-Aviv Academic College of Engineering
Hyaluronic Acid
The Role and Mechanism of O-GlcNAc Glycosylation Modified HAS2 in the Hyaluronic Acid Synthesis in ARDS
Maintaining the normal function of the pulmonary microvascular barrier is critical for ARDS treatment. To assess the relationship between the HAS2 protein level, HA content and the clinical prognosis of ARDS in patients with…
- Trial name
- NCT05055557
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Southeast University, China
Diabetic Nepheopathy
Role of Renal Duplex Resistive Index (RRI) and Pulsatility Index (PI) in Assessment of Early Renal Microvascular Changes in Diabetic Patient
Diabetes mellitus (DM) is a globally prevalent metabolic disorder with an escalating burden on renal health. Diabetic kidney disease (DKD) represents the leading cause of end-stage renal disease (ESRD) worldwide, affecting…
- Trial name
- NCT07864740
- Volunteers
- 84 people, healthy volunteers welcome
- Sponsor
- Assiut University
Heart Failure With Preserved Ejection Fraction (HFPEF)
The Effect of Adiposity on Muscle and Microvascular Function in HFpEF
This project is an observational study in patients with heart failure with preserved ejection fraction (HFpEF) who are candidates for treatment with weight loss medication to manage obesity or diabetes as part of their standard…
- Trial name
- NCT06930495
- Testing
- Weight loss SOC Treatment with second generation anti-diabetic medications
- Where
- United States
- Volunteers
- 95 people, healthy volunteers welcome
- Sponsor
- University of Texas Southwestern Medical Center
Circulatory; Change
Evaluating A Non-Invasive Tissue Perfusion Monitor
The Pedra perfusion system will be used to assess changes in perfusion in response to physiological stimuli. It will be compared to other standard diagnostics.
- Trial name
- NCT04630704
- Testing
- Pedra
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Pedra Technology, PTE LTD
Myopia, Progressive, Choroid Disease
Choroidal Change on OCTA in Eyes With High Myopia
Myopia is a global healthy concern, especially the high myopia and pathological myopia among Asian populations. However, its mechanism still remains largely unclear.
- Trial name
- NCT04255524
- Testing
- Optic coherence tomography angiography (OCTA)
- Where
- China
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- The First Affiliated Hospital with Nanjing Medical University
Ischemic Stroke
Characterization of Retinal Microvascular and FAZ Changes in Ischemic Stroke and Its Different Types
The study aimed to access the microvascular changes in the superficial capillary plexus (SCP) and deep capillary plexus (DCP) in patients with ischemic stroke and its different types using optical coherence tomography angiography.
- Trial name
- NCT05243849
- Testing
- Optical Coherence Tomography Angiography
- Where
- China
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Peking University Third Hospital
Sepsis, Retinal Microcirculation Disorder
Ocular Microvascular Changes in Patients With Sepsis
This study evaluates differences in the ocular microcirculation between septic patients and healthy subjects and the course of ocular microvasculature in survivors and non-survivors over a 24 hours period of time in septic…
- Conditions
- Sepsis, Retinal Microcirculation Disorder, Conjunctiva; Disorder
- Trial name
- NCT04214743
- Testing
- Incident dark field videomicroscope from Braedius, Fundus camera from Optomed
- Where
- Lithuania
- Volunteers
- 76 people, healthy volunteers welcome
- Sponsor
- Lithuanian University of Health Sciences
Eye Manifestations, Lupus Erythematosus, Systemic
Microvascular Ocular Changes of Systemic Lupus Erythematous
The goal of this observational study is to to assess the ocular microvascular status of SLE patients with inactive disease and without ocular involvement.
- Trial name
- VascLup (NCT05863689)
- Testing
- Spectralis SD-OCT
- Where
- Portugal
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Universidade do Porto
Diabetic Retinopathy, Neurodegeneration
Glycemic Control and Retinal Microvascular Changes
The goal of this prospective, observational study is to compare in the association of glycemic control and retinal microvascular changes in patients with type 2 diabetes mellitus (T2DM) without diabetic retinopathy (DR).
- Conditions
- Diabetic Retinopathy, Neurodegeneration, Blood Sugar; High
- Trial name
- NCT06150495
- Where
- South Korea
- Volunteers
- 259 people, healthy volunteers welcome
- Sponsor
- Seoul National University Hospital
Eye Injury Trauma
Evaluation of Retinal Microvascular Change That May Develop in After Open Globe Injury
The aim of this study is to evaluate posterior segment changes in the non-traumatic eye after open globe injury.
- Trial name
- NCT05771467
- Testing
- Comprehensive Ophthalmologic Examination
- Where
- 2 sites in Turkey (Türkiye)
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Akdeniz University
Pregnancy Related
Retinal and Choroidal Microvascular Changes During Pregnancy Period Detected With Optical Coherence Tomography Angiography
During pregnancy many physiological changes and adaptations occur.Hormonal, hematological and hemodynamic changes are responsible for most of the ocular adaptations.We are planning to compare the choroid and retinal blood flow…
- Trial name
- NCT04950855
- Testing
- Optical Coherence Tomography,Optical Coherence Tomography Angiography(Topcon)
- Where
- Turkey (Türkiye)
- Volunteers
- 86 people, healthy volunteers welcome
- Sponsor
- Akdeniz University
Obesity, Vascular Dysfunction
DNA Methylation and Vascular Function
The main objective is to examine DNA hypomethylation as an underlying mechanism for the increased production of inflammatory cytokines and the impaired vascular function in obese individuals and as a potential target for…
- Trial name
- NCT03527420
- Testing
- Exercise training
- Where
- United States
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- University of Illinois at Chicago
Obesity, Obesity, Morbid
Effects of Differences in Body Composition on Retina and Choroid
The goal of this observational study is to examine the effects of body composition differences on retinal and choroidal structures.
- Conditions
- Obesity, Obesity, Morbid, Body Composition
- Trial name
- NCT06888765
- Testing
- Optical Coherence Tomography (OCT) and Body Composition Analysis
- Where
- Turkey (Türkiye)
- Volunteers
- 261 people, healthy volunteers welcome
- Sponsor
- Bayram Meydan
Glaucoma,Primary Open-Angle ,Primary Angle Closure
Comparison of Optical Coherence Tomography Angiography Microvascular Changes in Primary Open Angle and Primary Angle Closure Glaucoma
This work aims to study the peripapillary and macular microvascular changes in primary open angle and primary angle closure glaucoma using Optical Coherence Tomography Angiography (OCTA).
- Trial name
- NCT06000176
- Testing
- Optical coherence tomography angiography
- Where
- Egypt
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Omar Said
Preeclampsia (PE), Hypertension ,Pregnancy
Retinal and Choroidal Microcirculation in Preeclampsia: An OCTA Study
Preeclampsia is a multisystemic and multifactorial disorder that complicates pregnancy and is characterized by new-onset hypertension after the 20th week of gestation accompanied by proteinuria or systemic findings such as renal…
- Conditions
- Preeclampsia (PE), Hypertension ,Pregnancy, Retinal Microvascular Changes, Hypertensive Disorders of Pregnancy
- Trial name
- PE-OCTA (NCT07874191)
- Where
- Turkey (Türkiye)
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Muğla Sıtkı Koçman University
Microvascular Dysfunction, Endothelial Dysfunction
Nailfold Capillaroscopy and Endothelial Biomarkers in Healthcare Workers Exposed to Chronic Low-Dose Ionizing Radiation
Chronic occupational exposure to low-dose ionizing radiation may lead to subclinical endothelial dysfunction and early microvascular alterations in healthcare workers.
- Conditions
- Microvascular Dysfunction, Endothelial Dysfunction, Occupational Radiation Exposure
- Trial name
- NCT07363187
- Where
- Turkey (Türkiye)
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Istanbul Training and Research Hospital
Multiple Sclerosis
Using Optical Coherence Tomography to Capture Retinal Microvascular Changes Associated With Multiple Sclerosis
Recent studies have shown that people with multiple sclerosis (MS) who also have diseases related to vascular health such as high cholesterol, high blood pressure, diabetes, cardiovascular disease, and others, may end up more…
- Trial name
- OCT in MS (NCT01596881)
- Where
- United States
- Volunteers
- 101 people, healthy volunteers welcome
- Sponsor
- Oregon Health and Science University
Epilepsy (Treatment Refractory), Epilepsy
Retinal OCT Changes and Biomarkers in Drug-Resistant Epilepsy
This prospective, longitudinal observational study investigates whether epilepsy involves a progressive neurodegenerative process.
- Trial name
- NCT07716930
- Where
- Turkey (Türkiye)
- Volunteers
- 250 people, healthy volunteers welcome
- Sponsor
- Kemal Tutkavul