Clinical trials: Microcirculation Resistance
ST-segment Elevation Myocardial Infarction (STEMI)
Angio-IMR and Cardiac MR-derived MVO in STEMI Patients
Coronary microcirculatory dysfunction has been known to be prevalent even after successful revascularization of ST-segment elevation myocardial infarction (STEMI) patients.
- Trial name
- NCT04828681
- Testing
- Cardiac magnetic resonance imaging
- Where
- 2 sites in United States, China
- Volunteers
- 324 people
- Sponsor
- Samsung Medical Center
Cardiomyopathies, Microcirculation
IMR Assessment in Patients With New Diagnosis of Left Ventricle Dilatation
To establish if, in patients with new diagnosis of left ventricular dilatation without documentation at the coronary artery angiography of significant coronary artery lesions, there is a damage of the coronary microcirculation at…
- Conditions
- Cardiomyopathies, Microcirculation, Microvessels
- Trial name
- IMPAIRED (NCT02705170)
- Testing
- index of microvascular resistance
- Where
- Italy
- Volunteers
- 35 people
- Sponsor
- University Hospital of Ferrara
Stable Angina, Coronary Artery Disease
Impact of Rotational Atherectomy on Coronary Microcirculation
The purpose of this observational study is to compare the impact of rotational atherectomy to conventional stenting and to investigate how it may affect coronary microcirculation in patients with calcified coronary artery lesions…
- Trial name
- MICRO-ROTA (NCT05771961)
- Testing
- coronary pressure/temperature sensor-tipped guidewire, Angiography-derived index of microcirculatory resistance (IMRangio)
- Where
- Lithuania
- Volunteers
- 300 people
- Sponsor
- Lithuanian University of Health Sciences
High Blood Pressure
Microcirculation and Inflammatory Markers in Patients With Resistant, Stages 1/2 Hypertension and Normal Blood Pressure
Nailfold videocapillaroscopy (NVC), Venous occlusion Plethysmography (VOP) and inflammatory biomarkers have been used to study endothelial function in patients with resistant hypertension, stages 1 and 2 hypertension and…
- Trial name
- MICRORAH (NCT02759276)
- Volunteers
- 75 people, healthy volunteers welcome
- Sponsor
- Daniel Alexandre Bottino
Refractory Angina Pectoris
IMR Evaluation in Patients with Coronary Sinus Reducer Implantation (INROAD Study)
The INROAD is an investigator-driven, prospective, study in which patients undergoing coronary sinus reducer implantation (Reducer) for chronic refractory angina undergo evaluation of the index of microcirculatory resistance…
- Trial name
- INROAD (NCT05174572)
- Testing
- IMR
- Where
- Italy
- Volunteers
- 21 people
- Sponsor
- Consorzio Futuro in Ricerca
Spinal Cord Injury, Insulin Resistance
IR and Microvascular Blood Flow in SCI
Persons with spinal cord injury (SCI) are at an increased risk for metabolic disorders, including that of insulin resistance. As a result of neurological injury, they often have impaired mechanisms that regulate blood vessel…
- Trial name
- NCT02034331
- Testing
- Insulin iontophoresis, Acetylcholine Iontophoresis, Heat application
- Where
- United States
- Volunteers
- 68 people, healthy volunteers welcome
- Sponsor
- James J. Peters Veterans Affairs Medical Center
Hypertension
Neural Mechanism of Aldosterone-induced Insulin Resistance
Patients with high aldosterone hormone have higher blood glucose than normal people. This study is being done to understand how aldosterone hormone affects the nerve activity that controls blood flow in the muscles and blood…
- Trial name
- NCT02102243
- Testing
- DEFINITY® infusion, Human Recombinant Regular Insulin infusion, Dextrose infusion
- Where
- United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- Wanpen Vongpatanasin
Myocardial Infarction [C14.907.585.500]
Influence of Intensive Lipid Lowering Treatment Compared to Moderate Lipid Lowering Treatment
The aim of this study was to measure the effect of low- and high-dose lipid-lowering treatment with rosuvastatin on the coronary physiology parameters.
- Trial name
- NCT01245894
- Testing
- Low-dose Rosuvastatin, High-dose Rosuvastatin
- Where
- Denmark
- Volunteers
- 87 people
- Sponsor
- Odense University Hospital
Coronary Artery Disease, Microcirculation
The ImPact of Trimetazidine on MicrOcirculation After Stenting for Stable Coronary Artery Disease
The study should enrol 50 patients with stable coronary artery disease scheduled for elective percutaneous coronary intervention of single, de novo lesion of native coronary artery.
- Conditions
- Coronary Artery Disease, Microcirculation, Vascular Resistance
- Trial name
- PATMOS (NCT02107144)
- Testing
- trimetazidine
- Where
- Serbia
- Volunteers
- 71 people
- Sponsor
- Clinical Hospital Center Zemun
Coronary Artery Disease, Microvascular Angina
Coronary Thermo-dilution Derived Flow-indices in Chronic Coronary Syndrome
Patients scheduled for elective coronary angiography due to chronic coronary syndrome are recruited at admission to hospital before the coronary anatomy is known.
- Conditions
- Coronary Artery Disease, Microvascular Angina, Coronary Microvascular Dysfunction
- Trial name
- NCT06306066
- Where
- Sweden
- Volunteers
- 505 people
- Sponsor
- Karolinska Institutet
Insulin Resistance, Obesity
Tea-beetroot-venous Occlusion Plethysmography
In the present study, muscle perfusion will be studied before and after an oral glucose challenge following a fasting period.
- Trial name
- NCT01746329
- Testing
- Tea, Beet root
- Where
- Netherlands
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- Unilever R&D
Peripheral Arterial Disease, Intermittent Claudication
The Effects of Metformin on Functional Capacity in Individuals With Peripheral Artery Disease-Related Intermittent Claudication
The purpose of this study is to determine the effects of metformin on functional capacity (pain-free and maximum walking times) in individuals with peripheral artery disease (PAD)-related intermittent claudication.
- Trial name
- NCT01799057
- Testing
- Metformin
- Where
- Australia
- Volunteers
- 2 people
- Sponsor
- Baker Heart and Diabetes Institute
Coronary Arterial Disease (CAD), Angina (Stable)
Effect of Beta-blockers on Coronary Flow and Resistance in Patients With ANOCA
The goal of this clinical trial is to learn whether beta-blockers can improve coronary blood flow and reduce resistance in patients with angina and no obstructive coronary arteries (ANOCA).
- Conditions
- Coronary Arterial Disease (CAD), Angina (Stable), Microvascular Circulation
- Trial name
- BEACON (NCT06864234)
- Testing
- Saline (NaCl), Metoprolol Tartrate
- Where
- Belgium
- Volunteers
- 46 people, healthy volunteers welcome
- Sponsor
- VZW Cardiovascular Research Center Aalst
Microvascular Dysfunction, Hypertrophic Obstructive Cardiomyopathy
Association Between Microvascular Resistance and Outcomes in Patients With Obstructive Hypertrophic Cardiomyopathy
About 60% of patients with hypertrophic cardiomyopathy have microvascular dysfunction. Microvascular dysfunction is directly related to prognosis in hypertrophic cardiomyopathy.
- Conditions
- Microvascular Dysfunction, Hypertrophic Obstructive Cardiomyopathy, Microcirculation Resistance
- Trial name
- NCT05671367
- Where
- China
- Volunteers
- 340 people
- Sponsor
- China National Center for Cardiovascular Diseases
Myocardial Ischemia
Clinical Study on the Correlation Between IMR（Index of Microcirculation Resistance） and FFR（Fractional Flow Reserve）
To study the effect of myocardial microcirculation disturbance on coronary flow reserve fraction, compare the evaluation value of IMR, FFR and QCA on myocardial ischemia, and discuss the correlation among them.
- Trial name
- NCT04224714
- Testing
- FFR
- Where
- China
- Volunteers
- 60 people
- Sponsor
- The People's Hospital of Liaoning Province
Arterial Hypertension, Resistant Arterial Hypertension
Systemic Microvascular Function in Patients With Resistant Hypertension After Renal Sympathetic Denervation
It has been proposed that the modulation of the activity of the sympathetic nervous system, through renal sympathetic denervation, besides reducing blood pressure, would promote an improvement in vascular reactivity and…
- Trial name
- NCT03243045
- Testing
- Renal sympathetic denervation
- Where
- Brazil
- Volunteers
- 20 people
- Sponsor
- National Institute of Cardiology, Laranjeiras, Brazil
Metabolic Syndrome
NWT03 and Arterial Stiffness
Rationale: Subjects with the metabolic syndrome have an increased risk of developing cardiovascular disease and a twofold risk of developing hypertension.
- Trial name
- NCT02561663
- Testing
- NWT-03, an egg-white protein hydrolysate
- Where
- Netherlands
- Volunteers
- 79 people, healthy volunteers welcome
- Sponsor
- Newtricious R&D BV
Coronary Artery Calcification, Intravascular Lithotripsy
Prognostic Impact of Coronary Microvascular Dysfunction After IVL Versus RA in Patients With Severe Coronary Calcification Undergoing PCI
The goal of this observational study is to lean that whether the distinct mechanisms by which intravascular lithotripsy (IVL) and rotational atherectomy (RA) treat severe coronary calcification differentially affect the…
- Conditions
- Coronary Artery Calcification, Intravascular Lithotripsy, Coronary Microcirculation Dysfunction
- Trial name
- NCT07699965
- Where
- China
- Volunteers
- 590 people
- Sponsor
- Second Affiliated Hospital, Zhejiang University, School of Medicine
Hypertension, Obesity
Microvascular Dilatation After Endogenous Induced Hyperinsulinemia
In this study we will examine if the insulin-induced microvascular effects will occur after a physiological stimulus (i.e. a oral glucose tolerance test).
- Trial name
- NCT00742456
- Testing
- Glucose solution
- Where
- Netherlands
- Volunteers
- 48 people, healthy volunteers welcome
- Sponsor
- Maastricht University Medical Center
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