Clinical trials: Coronary Circulation
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
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
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
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
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
Heart Failure, Diastolic, Diastolic Heart Failure
Myocardial Perfusion, Oxidative Metabolism, and Fibrosis in HFpEF
Unlike heart failure with reduced ejection fraction (HFrEF) where several medicines and devices have been demonstrated to reduce mortality, no such therapies have been identified in HFpEF.
- Conditions
- Heart Failure, Diastolic, Diastolic Heart Failure, Hypertension
- Trial name
- HFpEF-PRoF (NCT02589977)
- Testing
- regadenoson
- Where
- United States
- Volunteers
- 55 people, healthy volunteers welcome
- Sponsor
- Marvin W. Kronenberg, M.D.
Vascular Disease, Heart Disease
Effects of Urocortins on Forearm Arterial Blood Flow in Healthy Volunteers (Protocol 3)
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
- NCT01096706
- Testing
- NO clamp, Saline, Fluconazole
- Where
- United Kingdom
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- University of Edinburgh
Single-ventricle, Fontan Circulation
Venous Compression in Fontan
The aim of this study is to investigate whether venous compression garments increase exercise stroke volume in patients with Fontan circulation. To address this aim, we will test the following hypotheses: 1.
- Trial name
- NCT07220226
- Testing
- Lower extremity compression garments, Without compression garments
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of Texas Southwestern Medical Center
Heart Failure，Congestive
Effect of mechanIcal circulatoRy Support ON Exercise Capacity aMong pAtieNts With Heart Failure
This study will evaluate how the cardiovascular system interacts with mechanical hearts to provide blood flow to the body during exercise.
- Trial name
- IRONMAN (NCT03078972)
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- University of Colorado, Denver
Fontan Circulation
Fontan Circulation and Reproductive Health in a National Swedish Cohort
In the Swedish registry for congenital heart defects, SWEDCON, over 230 patients with single-ventricle circulation are registered in the adult section.
- Trial name
- NCT06258382
- Testing
- Questionnaires and functional test
- Where
- 15 sites in Sweden
- Volunteers
- 600 people, healthy volunteers welcome
- Sponsor
- Caroline Lilliecreutz
Normal Healthy Volunteers Without Chronic Medical Conditions, Coronary Artery Disease
3D PET Myocardial Blood Flow and Rb82 Infusion Profiles
The investigators seek to test bolus infusions (50ml/min) vs. slow infusions (20 ml/min) of Rb-82 on metrics of coronary blood flow assessed on a modern 3D PET/CT.
- Conditions
- Normal Healthy Volunteers Without Chronic Medical Conditions, Coronary Artery Disease, Cardiac Risk Factors, Myocardial Infarction
- Trial name
- NCT05286593
- Testing
- Slow Infusion of Rubidium-82
- Where
- United States
- Volunteers
- 98 people, healthy volunteers welcome
- Sponsor
- Ochsner Health System
Healthy
Effects of Red Wine and Cognac on Coronary Circulation
Red wine consumption is associated with reduced cardiovascular disease mortality, and the cardioprotective properties may be partly related to its ability to improve endothelial function.
- Trial name
- NCT00330213
- Testing
- red wine and cognac consumption
- Where
- Finland
- Volunteers
- 25 people, healthy volunteers welcome
- Sponsor
- University of Turku
Vascular Disease, Heart Disease
Gap Junction Potentiation of Endothelial Function With Rotigaptide
Hypothesis - Rotigaptide will improve endothelial function in the context of endothelial dysfunction. The lining of blood vessels (endothelium) can react to hormones in the blood stream causing the blood vessel muscle to relax…
- Trial name
- NCT00901563
- Testing
- Rotigaptide, Forearm vascular study
- Where
- United Kingdom
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- University of Edinburgh
Obstructive Sleep Apnea, Hypertension
Effect of Selective and Nonselective Cyclooxygenase Enzyme Inhibition on Arterial Blood Pressure and Cerebral Blood Flow With Exposure to Intermittent Hypoxia in Humans
The study has been designed to assess the effect of cyclooxygenase inhibition on blood pressure, cerebral blood flow, ventilation and renal hemodynamics following chronic intermittent hypoxia exposure.
- Conditions
- Obstructive Sleep Apnea, Hypertension, Cardiovascular Diseases, Stroke
- Trial name
- NCT01280006
- Testing
- Intermittent hypoxia, Indomethacin, Celecoxib
- Where
- Canada
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- University of Calgary
Coronary Artery Disease
Palmar Arch Insufficiency as a Risk Factor for Radial Artery Occlusion After Transradial Catheterization
Transradial access (TRA) is commonly used in different medical fields due to the superficial position of the radial artery and related advantages.
- Trial name
- PAIRAO (NCT03993834)
- Where
- Switzerland
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Insel Gruppe AG, University Hospital Bern
Coronary Artery Disease
F-18 Rhodamine 6G PET Imaging for Myocardial Blood Flow
Use of novel radio-pharmaceutical Rhodamine 6G to determine myocardial blood flow
- Trial name
- NCT04528758
- Testing
- Rhodamine 6G
- Where
- United States
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- Washington University School of Medicine
Heart Disease, Vasodilation
Interaction of Apelin and Angiotensin in the Human Forearm Circulation
The apelin-APJ system is a relatively new discovery. It has generated interest in part due to it's apparent ability to counteract the renin-angiotensin system, which is frequently overactive in many cardiovascular disease.
- Trial name
- NCT00901888
- Testing
- Apelin infusion, Sodium nitroprusside infusion
- Where
- United Kingdom
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- University of Edinburgh
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
Type 2 Diabetes Mellitus
Endothelial and Metabolic Effects of Glucagon-like Peptide-1 (GLP-1) in Coronary Circulation in Patients With Type 2 Diabetes Mellitus
GLP-1 is an incretin hormone which is discharged from the intestines after food intake. The hormone is known for its powerful insulinotropic and trophic effects on the beta cells in the pancreas and is currently used as an…
- Trial name
- NCT00923962
- Testing
- Glucagon like peptide-1, Adenosine
- Where
- Denmark
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- University Hospital, Gentofte, Copenhagen