Clinical trials: Cardiac Flow
Myocardial Blood Flow Reserve, Mechanical Dyssynchrony
Mechanical Dyssynchrony and Microvascular Dysfunction by SPECT
The project is aimed at studying the feasibility of mechanical dyssynchrony of the left ventricle of the heart, determined by SPECT (gated MPI), as well as its stress-induced dynamics, in the evaluation of patients with coronary…
- Conditions
- Myocardial Blood Flow Reserve, Mechanical Dyssynchrony, Coronary Arterial Disease (CAD)
- Trial name
- MD&MD (NCT06969547)
- Testing
- dynamic SPECT (two-day rest/stress protocol), gated myocardial perfusion imaging, blood sampling
- Where
- Russia
- Volunteers
- 75 people, healthy volunteers welcome
- Sponsor
- Tomsk National Research Medical Center of the Russian Academy of Sciences
Healthy, Healthy Participants
Acute Effects of Structured Exercise and Static Stretching on Vascular Function, Neuromuscular Performance, and Metabolic Regulation in Adults
This experimental study investigates the acute cardiovascular and vascular responses to a single session of resistance training, with and without additional static stretching, compared with a resting control condition.
- Conditions
- Healthy, Healthy Participants, Healthy Subjects (HS), Resistance Training Adaptation
- Trial name
- NCT07364149
- Testing
- Resistance Training, Resistance training + Static Stretching
- Where
- Italy
- Volunteers
- 27 people, healthy volunteers welcome
- Sponsor
- University of Palermo
Hot Weather; Adverse Effect, Healthy
Characterization of Myocardial Blood Flow During Heat Exposure
The purpose of this study is to determine the increase in myocardial blood flow during heat exposure and how this response is affected by age and coronary artery disease.
- Conditions
- Hot Weather; Adverse Effect, Healthy, Coronary Artery Disease, Aging
- Trial name
- PET-Heat (NCT04549974)
- Testing
- Heat exposure
- Where
- Canada
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Montreal Heart Institute
Left Ventricular Failure, Unspecified
Daily Life Activities in Patients Treated With Continuous-Flow Left Ventricular Assist Devices
Investigation of oxygen uptake during daily life activities in HF patients with and without LVADs.
- Trial name
- Act-VAD (NCT04732039)
- Testing
- Measurement of peak oxygen uptake
- Where
- Denmark
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Copenhagen University Hospital, Rigshospitalet
Cardiovascular Disease, Heart Failure
Effects of Urocortins on Forearm Arterial Blood Flow in Healthy Volunteers - Protocol 4
Impairment of the heart's pumping capacity (heart failure) remains a major clinical problem with a poor prognosis and the search for novel treatments remains an important area of research.
- Trial name
- NCT01296607
- Testing
- Urocortin 2, Urocortin 3
- Where
- United Kingdom
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- University of Edinburgh
Cardiac Arrest (CA)
Effect of AED-optimized Telephone-assisted CPR Instructions on No-flow Time and Chest Compression Fraction
Out-of-hospital cardiac arrest (OHCA) remains a leading cause of mortality worldwide, with survival highly dependent on the immediate initiation of bystander cardiopulmonary resuscitation (CPR).
- Trial name
- NCT07520877
- Testing
- T-CPR, AED-optimized T-CPR
- Where
- Hungary
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- University of Pecs
Computer Simulation, Energy Expenditure
Modelling of Energy Expenditure From Heart Rate, Accelerometry and Other Physiological Parameters
At this time, 24h energy expenditure is rarely assessed under free-living conditions for specific individuals because of the lack of cheap and accurate software/materials to record the energy expenditure.
- Conditions
- Computer Simulation, Energy Expenditure, Energy Metabolism
- Trial name
- Modelheart (NCT01209572)
- Testing
- calorimetric chamber, Free living conditions
- Where
- France
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
Cardiac Remodeling, Ventricular
Intracardiac Flow Remodeling in Athletes
The uncertainty concerning the onset and the extent of cardiac remodeling in response to intensive training hinders medical evaluation by physician.
- Trial name
- INFINITE (NCT03076788)
- Testing
- electrocardiogram and echocardiography
- Where
- France
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- University Hospital, Caen
Coronary Heart Disease
Cadmium-zinc-telluride (CZT) Imaging of Myocardial Blood Flow (MBF) (SPECT MBF)
This study is being done to compare the blood flow measurements obtained with the SPECT and PET imaging scans. Measurements such as myocardial blood flow (MBF) and myocardial flow reserve (MFR) are analyzed on PET scans.
- Trial name
- SPECTMBF (NCT02280941)
- Testing
- single photon emission computed tomography
- Where
- Canada
- Volunteers
- 66 people, healthy volunteers welcome
- Sponsor
- Ottawa Heart Institute Research Corporation
Pregnancy, Physical Activity
The Effect of Physical Activity During Pregnancy on Uterine and Fetal Parameters
This study investigates the relationship between physical activity levels and fetal health in the third trimester of pregnancy. Using the PPAQ and daily step counts, researchers will measure physical activity and examine its…
- Trial name
- TEOPADPUFP (NCT07147777)
- Where
- Turkey (Türkiye)
- Volunteers
- 159 people, healthy volunteers welcome
- Sponsor
- Antalya Training and Research Hospital
Healthy Volunteers
Mapping of Cardiac Power in Healthy Humans and Testing of a New Blood Pressure Sensor
Brief Summary: The study will record hemodynamic data from 20 healthy volunteers at rest and during moderate bicycle exercise in the recumbent and half sitting position for the following purposes: Sub-study 1 Testing the overall…
- Trial name
- NCT05008133
- Testing
- Bicycle exercise
- Where
- Norway
- Volunteers
- 25 people, healthy volunteers welcome
- Sponsor
- Norwegian University of Science and Technology
Diabetes Mellitus
Changes in Arterial Stiffness and Endothelial Glycocalyx in Patients With Poorly Controlled Diabetes Mellitus Type 1 or Type 2 After Optimization of Antidiabetic Medication.
Arterial stiffness is associated with increased risk for cardiovascular disease. Moreover, the integrity of endothelial glycocalyx plays a vital role in vascular permeability, inflammation and elasticity.
- Trial name
- NCT03010956
- Where
- Greece
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- University of Athens
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
Intravenous Fluids, Pharmacodynamics
Effect of Oral Water in Healthy Volunteers on Cardiac Output, Regional Flow and Microcirculation in Healthy Volunteers
Human digestive system physiologically ensures the absorption of oral water and hydration of the human body. Water is quickly absorbed by the digestive tract with a peak between 15 and 20 minutes.
- Conditions
- Intravenous Fluids, Pharmacodynamics, Fluid Therapy, Fluid Responsiveness
- Trial name
- WATERNAL (NCT05153837)
- Testing
- saline intravenous administration, oral water
- Where
- France
- Volunteers
- 59 people, healthy volunteers welcome
- Sponsor
- Centre Hospitalier Universitaire, Amiens
Coronary Atheroscleroses, Coronary Angiography
Risk Factors of Intermediate Coronary Lesion Progression
Coronary intermediate lesions generally refer to lumen narrowing with diameter stenosis% (DS%) between 50% and 70% on angiography.
- Trial name
- NCT03855436
- Where
- China
- Volunteers
- 1,389 people, healthy volunteers welcome
- Sponsor
- China National Center for Cardiovascular Diseases
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
Vascular Disease, Heart Disease
Effects of Urocortins on Forearm Arterial Blood Flow in Healthy Volunteers (Protocol 2)
Impairment of the heart's pumping capacity (heart failure) remains a major clinical problem with a poor prognosis and the search for novel treatments remains an important area of research.
- Trial name
- NCT01096693
- Testing
- Urocortin 2, Urocortin 3
- Where
- United Kingdom
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- University of Edinburgh
Kawasaki Disease, Heart Disease
Real Time Myocardial Contrast Echocardiography and Dobutamine Stress Perfusion Magnetic Resonance Imaging
The present study is designed to: 1. investigate the safety and efficacy of Real time myocardial echocardiography (RT-MCE) in adolescents and adults ages 12-50 with congenital and acquired congenital heart disease 2.
- Trial name
- ECHOBIKE (NCT00861848)
- Where
- United States
- Volunteers
- 124 people, healthy volunteers welcome
- Sponsor
- University of Nebraska
Non Cardiac Surgery
End-tidal Carbon Dioxide as a Non-invasive Predictor for Changes in Cardiac Output in Non-cardiac Surgery
Cardiac output (CO) is challenging to measure at the bedside. The traditional gold standard for measuring CO requires the insertion of a pulmonary artery catheter which is invasive, associated with a risk for serious…
- Trial name
- NCT06962748
- Testing
- cerebral blood flow measurment, TTE CO measurment, ETCO2
- Where
- Egypt
- Volunteers
- 105 people, healthy volunteers welcome
- Sponsor
- Ain Shams University
Surgery, Cardiac Death
Endothelial Dysfunction and Non-cardiac Surgery
Endothelial dysfunction is a cardiovascular disease hallmark. After non-cardiac surgery, cardiovascular events correlate with surgical outcomes. Understanding the role of endothelial function in these events is crucial.
- Conditions
- Surgery, Cardiac Death, Stroke, Myocardial Injury
- Trial name
- NCT05778981
- Testing
- FMD - Troponin measurement
- Where
- Chile
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- University of Chile