Clinical trials: Coronary Circulation
Pulmonary Hypertension
REVEAL Registry™: Registry to Evaluate Early And Long-term PAH Disease Management
The REVEAL Registry™ is a multicenter, observational, U.S.-based study of the clinical course and disease management of pulmonary arterial hypertension (PAH) patients.
- Trial name
- NCT00370214
- Where
- 54 sites in United States
- Volunteers
- 3,515 people
- Sponsor
- Actelion
Coronary Arterial Disease (CAD), Angina (Stable)
The Effect of Sublingual Nitroglycerin on Absolute Coronary Blood Flow
The goal of this clinical trial is to investigate the effect of sublingual nitroglycerin on absolute coronary blood flow in adult patients undergoing coronary angiography.
- Trial name
- FLOW-NITRO (NCT06823843)
- Testing
- Glycerin trinitrate (GTN)
- Where
- Belgium
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- VZW Cardiovascular Research Center Aalst
Therapy Refractory Myocardial Ischemia, Coronary Artery Disease
Improvement of Myocardial Blood Flow by PhosphoDiesterase 5 Inhibition in Coronary Artery Disease
The aim of this study is to prospectively investigate if intermittent Phosphodiesterase 5 inhibition for 15 weeks improves myocardial perfusion by angiogenesis in patients with therapy refractory myocardial ischemia due to…
- Conditions
- Therapy Refractory Myocardial Ischemia, Coronary Artery Disease, Unsuitable for Surgical or Percutaneous Revascularisation
- Trial name
- SYDNEY (NCT01406535)
- Testing
- Vardenafil
- Where
- Austria
- Sponsor
- Medical University of Vienna
Cardio-pulmonary Bypass, AORTIC VALVE DISEASES
Clinical Validation of a Novel Handsfree Doppler Ultrasound Device, RescueDoppler, in Adult Cardiac Surgery Patients
The goal of this study is to evaluate a new device called RescueDoppler (RD), which measures continuous blood flow in the common carotid artery. The device is handsfree and operator- independent.
- Conditions
- Cardio-pulmonary Bypass, AORTIC VALVE DISEASES, Coronary Arterial Disease (CAD), Aortic Aneurysm of the Proximal Arch
- Trial name
- RD_CPB (NCT06637540)
- Testing
- RescueDoppler
- Where
- 3 sites in Norway
- Volunteers
- 42 people
- Sponsor
- St. Olavs Hospital
Prostate Cancer
Study to Monitor the Effects of Androgen Suppression Treatment on the Heart
Suppression of effects of androgens with male sex hormones, androgen suppression treatment (AST), has been known to reduce deaths and prolong life in advanced prostate cancer.
- Trial name
- AST (NCT01230905)
- Testing
- PET scan and ultrasound
- Where
- Canada
- Volunteers
- 181 people, healthy volunteers welcome
- Sponsor
- Ottawa Heart Institute Research Corporation
Coronary Vasospasm
Effect of Glucose on Ocular Blood Flow
The primary objective is to assess the effect of glucose on retinal vascular diameter in otherwise healthy vasospastic subjects compared to non-vasospastic controls.
- Trial name
- NCT00350129
- Where
- Switzerland
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- University Hospital, Basel, Switzerland
Pediatric Cardiac Surgery, Complication of Extracorporeal Circulation
A Pilot Study Comparing Anti-Inflammatory Effects Of TXA Versus EACA In Pediatric Congenital Heart Surgery
The purpose of this study is to compare anti-inflammatory effects of two anti-fibrinolytic drugs (Tranexamic acid versus Epsilon-aminocaproic acid) in pediatric patients undergoing pediatric cardiac surgery.
- Trial name
- TXAEACA (NCT02656472)
- Testing
- Tranexamic acid, Epsilon Aminocaproic Acid
- Where
- United States
- Volunteers
- 22 people
- Sponsor
- Wake Forest University Health Sciences
Baro-reflex Sensitivity, Heart Rate Variability
Low Intensity Exercise in Different Normobaric/Hypobaric Normoxic/Hypoxic Conditions.
The main goal of this project is to investigate how low intensity cycling exercise (1.5W/kg, for 6 minutes) influences cerebral functions, such as: Cerebral blood flow, oxygenation, and other physiological variables in different…
- Conditions
- Baro-reflex Sensitivity, Heart Rate Variability, EEG, Microstates, Cerebral Blood Flow Regulation
- Trial name
- Hypoxia (NCT03439202)
- Testing
- Hypoxia
- Where
- Switzerland
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Fliegerärztliches Institut
Coronary Artery Disease (CAD)
Predicting Plaque Growth Using Blood Flow Stress Markers: A Proof-of-Concept Study
Coronary artery disease occurs when fatty deposits (plaques) build up inside the arteries that supply blood to the heart. Some plaques remain stable, while others continue to grow or become more likely to rupture, which can lead…
- Trial name
- POSSEM (NCT07864051)
- Testing
- PCCTA scan, Endothelial cell isolation from peripheral blood sample
- Where
- United Kingdom
- Volunteers
- 270 people
- Sponsor
- Queen Mary University of London
Heart Failure
Effect of Exercise-based Rehabilitation on Circulatory Functions in Patients With Diastolic Heart Failure
The purpose of this study is to investigate how exercise-base rehabilitation influences circulatory functions in patients with diastolic heart failure (DHF).
- Trial name
- NCT01053091
- Testing
- exercise
- Where
- Taiwan
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Chang Gung Memorial Hospital
Mechanical Circulatory Support
BRAIN-HEART Ultrasound Study Normative Values for Transcranial Doppler Based Cerebral Blood Flow Assessment
There is a dire need to establish normative values for transcranial Doppler(TCD) derived cerebral blood flow parameters for each type of Mechanical circulatory support (MCS) device and explore the relationship between the MCS…
- Trial name
- MCS (NCT05924503)
- Where
- United States
- Volunteers
- 6 people
- Sponsor
- Wake Forest University Health Sciences
Critical Illness, Pediatric Critical Illness
Brain Blood Flow and Cerebral Autoregulation Monitoring in Critically Ill Children
This study uses a non-invasive (external) ultrasound test called Transcranial Doppler (TCD) to measure how blood flows through the major arteries of the brain of children receiving care in the Pediatric Intensive Care Unit…
- Conditions
- Critical Illness, Pediatric Critical Illness, Respiratory Failure, Traumatic Brain Injury
- Trial name
- NCT07613918
- Testing
- Transcranial Doppler
- Where
- United States
- Volunteers
- 125 people
- Sponsor
- University of Wisconsin, Madison
Acute Kidney Injury, Children
Renal Oxygen Saturation and Its Association With Acute Renal Injury
Peri-operative renal dysfunction is a major mortality and morbidity cause following cardiac and major vascular surgery. Although several intra-operative strategies are proposed for better outcomes, no effective and fast resulting…
- Conditions
- Acute Kidney Injury, Children, Cardiac Surgery
- Trial name
- NCT03608956
- Where
- Turkey (Türkiye)
- Sponsor
- Marmara University
Coronary Artery Disease
Measurements to Assess Severity of Epicardial Stenoses
Newly developed diagnostic parameters have potential to differentiate between epicardial disease and microvascular dysfunction with the help of anatomical details and physiological endpoints and can be used in present clinical…
- Trial name
- MASES (NCT00760630)
- Testing
- FFR/CFR and IVUS
- Where
- 2 sites in United States
- Volunteers
- 10 people
- Sponsor
- University of Cincinnati
Coronary Artery Disease
SPECT Myocardial Blood Flow Quantification for Diagnosis of Ischemic Heart Disease Determined by Fraction Flow Reserve
Recent evidences have demonstrated improved diagnostic accuracy for detecting coronary artery disease (CAD) when myocardial blood flow (MBF) is quantified in absolute terms using single photon emission tomography (SPECT) compared…
- Trial name
- NCT06030596
- Where
- China
- Volunteers
- 210 people
- Sponsor
- China National Center for Cardiovascular Diseases
Circulatory Shock, Sepsis
Shock and Acute Conditions OutcOmes Platform
In-hospital mortality of patients admitted in the intensive care unit (ICU) for circulatory shock remains high (between 20 and 40%).
- Conditions
- Circulatory Shock, Sepsis, Cardiogenic Shock, Major Trauma
- Trial name
- ShockCO-OP (NCT06376318)
- Testing
- Inotrope, Mechanical circulatory support, anti-bodies
- Where
- Canada
- Volunteers
- 1,000 people
- Sponsor
- Saint-Louis Hospital, Paris, France
Coronary Artery Disease
Assessing Myocardial Blood Flow and Blood Flow Reserve by Transoesophageal Echocardiography (TEE)
Until today it was not possible to reliably assess the function of a new bypass, i.e., to measure myocardial perfusion. Measuring intramyocardial blood flow directly after revascularisation would greatly improve the assessment of…
- Trial name
- NCT00286559
- Testing
- SonoVue, Optison
- Sponsor
- University Hospital, Basel, Switzerland
Nicotine-free Hookah Smoking
Effects of Nicotine-Free Hookah Smoking on Blood Flow to the Heart, Muscle and Skin
This is a pilot study on the acute effects of nicotine-free hookah (herbal/steam stones) smoking on the sympathetic neural control of the human cardiovascular system.
- Trial name
- NCT02310373
- Testing
- Nicotine free hookah smoking
- Where
- United States
- Volunteers
- 9 people, healthy volunteers welcome
- Sponsor
- Cedars-Sinai Medical Center
Contrast-induced Acute Kidney Injury (CI-AKI)
Hemodynamic Effects Of Impella On Renal Circulation And Risk Of CA-AKI Among Patients Undergoing Protected PCI
Patients undergoing Percutaneous Coronary Intervention (PCI) are exposed to the risk of suffering from a damage to the kidneys which goes under the name of Contrast-Associated Acute Kidney Injury (CA-AKI), which is more common if…
- Trial name
- NCT04928118
- Testing
- Evaluate the blood flow and pressure into kidneys
- Sponsor
- Virginia Commonwealth University
Post-Resuscitation Syndrome, Critical Illness
Predicting Mortality in Patients With Return of Spontaneous Circulation After Cardiac Arrest
This retrospective observational cohort study aims to identify early predictors of short- and mid-term mortality in adult patients who achieved return of spontaneous circulation (ROSC) after cardiac arrest.
- Conditions
- Post-Resuscitation Syndrome, Critical Illness, Cardiac Arrest, Hypoxic-Ischemic Encephalopathy
- Trial name
- PROM-ROSC (NCT07020091)
- Where
- Turkey (Türkiye)
- Volunteers
- 168 people
- Sponsor
- Ahmet Düzgün