Clinical trials: Doppler
Intensive Care Unit Acquired Weakness
The Effect of Inspiratory Muscle Training on Diaphragmatic Function in Mechanically Ventilated Patients
In this study, the effect of inspiratory muscle training on diaphragmatic functions will be investigated radiologically in mechanically ventilated patients.
- Trial name
- NCT05303623
- Testing
- Conventional Physiotherapy, Conventional Physiotherapy+ inspiratory muscle training, inspiratory muscle training
- Where
- Turkey (Türkiye)
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Istanbul Demiroglu Bilim University
Hypertension, Renal Failure
The Efficacy of Color-Doppler Ultrasonography to Assess the Renal Blood Flow With the Estimation of GFR
It is generally assumed that renal blood flow is symmetric in the absence of renal artery stenosis. The importance of studying the function of both kidneys separately is because it cannot be assumed that they are functionally…
- Trial name
- NCT00470769
- Testing
- Color-Doppler Ultrasound, 99mTc-DTPA scintigraphy
- Where
- 3 sites in Italy
- Volunteers
- 2,006 people, healthy volunteers welcome
- Sponsor
- University of Roma La Sapienza
Cystic Fibrosis, Endothelial Dysfunction
Vascular Health and Function in Cystic Fibrosis
The goal of this observational study is to learn whether blood vessel health and function differ between adults aged 40 years or older with cystic fibrosis (CF) who are taking CFTR modulator therapy and healthy adults of the same…
- Conditions
- Cystic Fibrosis, Endothelial Dysfunction, Cardiovascular Risk Factor
- Trial name
- CF-VHF (NCT07904325)
- Testing
- Non-invasive vascular, cerebrovascular and autonomic assessment
- Where
- United Kingdom
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Liverpool Heart and Chest Hospital NHS Foundation Trust
Stroke
Effects of Aerobic Exercise on the Cerebral Arterial System, Cognitive, and Motor Function in Post-stroke Patients.
Background: Stroke is the second leading cause of death and disability worldwide and in Hong Kong, 6.2% of all registered deaths in 2020 were due to cerebrovascular disease.
- Trial name
- NCT05706168
- Testing
- treadmill exercise, Cycle ergometer exercise
- Where
- Hong Kong
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- The Hong Kong Polytechnic University
Preeclampsia, Intra-uterine Growth Restriction
Utero-placental Vascularisation in Normal and Preeclamptic and Intra-uterine Growth Restriction Pregnancies
Introduction Preeclampsia (PE) and intra-uterine growth restriction (IUGR) are two major pregnancy complications related to chronic utero-placental hypoperfusion.
- Trial name
- EVUPA (NCT02825277)
- Testing
- Doppler
- Where
- France
- Volunteers
- 112 people, healthy volunteers welcome
- Sponsor
- Central Hospital, Nancy, France
Chocolate Consumption
Renal Ultrasound Response After Chocolate Consumption
The consumption of dark chocolate (DC) has antihypertensive (3) and anti-inflammatory effects. Some studies also suggest that dark chocolate may also have cardiovascular benefits, but its physiological effects on the kidneys have…
- Trial name
- Choco (NCT05755217)
- Testing
- Dark chocolate, White chocolate
- Where
- 2 sites in Switzerland
- Volunteers
- 33 people, healthy volunteers welcome
- Sponsor
- Gregoire Wuerzner; MD
Premature, Necrotizing Enterocolitis
Intestinal Perfusion After Feeding in Preterm and Term Infants
This is a pilot exploratory observational prospective cohort phase I study. In this study, we will gather preliminary data to evaluate (i) the magnitude of changes in blood flow in the bowel before and after feeding and (ii) the…
- Trial name
- NCT06319326
- Testing
- Evaluation of intestinal perfusion with color Doppler abdominal ultrasound before and after feeding.
- Where
- China
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- The Hospital for Sick Children
Intrauterine Growth Restriction
The Effect of Oral Isosorbide Mononitrate Therapy on Umbilical Artery Doppler Resistance Index in Pregnancies With Intrauterine Growth Restriction: Prospective Randomized Control Trial
Will follow up umblical artery Doppler indices for pregnancies with iugr taking placebo and oral isosorbide mononitrate to study its efficacy on the intrauterine growth restricted fetuses
- Trial name
- NCT05800938
- Testing
- Isosorbid mononitrate
- Where
- Egypt
- Volunteers
- 46 people, healthy volunteers welcome
- Sponsor
- Ain Shams University
Difference in Measured Results Using Four Different Strokevolume Measurements Simultaneously.
Real-time Comparison of Left Ventricular Strokevolume Measurement by Four Different Methods
Real-time comparison of three different bedside strokevolumemeasurements (arterial waveform analysis, eosofageal doppler and 2D transthoracal ultrasound) validated against cardiac magnetic resonance imaging (CMRI)
- Trial name
- FourComp (NCT01791283)
- Testing
- Arterial waveform analysis, esofageal doppler, transthoracal cardiac ultrasound, Cardiac magnetic resonance imaging.
- Where
- Sweden
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University Hospital, Linkoeping
Deep Venous Thrombosis
Doppler Ultrasound Imaging of Plastic Surgery Patients for DVT Detection
This prospective controlled study examines the use of Doppler ultrasound as a means to screen elective plastic surgery patients for the presence of deep venous blood clots both before and after surgery.
- Trial name
- NCT02123550
- Where
- United States
- Volunteers
- 2,000 people, healthy volunteers welcome
- Sponsor
- Swanson Center
Peripheral Arterial Disease(PAD)
Ankle-Brachial Index Changes Post Exercise and Its Effects on Patient-Centered Outcomes and Gait
The goal of this observational study or clinical trial is to investigate how exercise can affect different areas of a person's life, especially those people with vascular disease.
- Trial name
- ExerciseABI (NCT07637396)
- Where
- United States
- Volunteers
- 85 people, healthy volunteers welcome
- Sponsor
- Louisiana State University Health Sciences Center Shreveport
Healthy Volunteers
Intraosseous Doppler Ultrasonography to Study Skeletal Physiology: Exploratory Study Before Use in Space Physiology
Use of intraosseous Doppler ultrasonography to study skeletal physiology ("Echo-Os Study"). Exploratory study before its use in space physiology. Bones have a complex vascular network providing nutrients and oxygen to bone cells.
- Trial name
- Echo-Os (NCT06206031)
- Testing
- Intraosseous ultrasonography at tibia before, during, and after a physiological vascular stimulation (venous occlusions, arterial occlusion, handgrip)
- Where
- 2 sites in France
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- University Hospital, Angers
Hypertensive Disorders of Pregnancy, Pre-eclampsia
Ophthalmic Artery Doppler in the Puerperium After Hypertensive Disorders of Pregnancy (OPHELIA-PP)
Hypertensive disorders of pregnancy frequently fail to resolve at delivery. A substantial proportion of women remain hypertensive at the six-week postnatal review, postpartum eclampsia occurs days to weeks after birth, and a…
- Conditions
- Hypertensive Disorders of Pregnancy, Pre-eclampsia, Postpartum Hypertension, Puerperal Disorders
- Trial name
- OPHELIA-PP (NCT07841795)
- Where
- Italy
- Volunteers
- 366 people, healthy volunteers welcome
- Sponsor
- University of Roma La Sapienza
Hypertension, Endothelial Function
Endothelial Extracellular Vesicles as Biomarkers of Endothelial Activation in Adults With Newly Diagnosed Hypertension
Hypertension is associated with endothelial dysfunction, an early event in the development of cardiovascular disease. Endothelial extracellular vesicles (EEVs) have emerged as promising biomarkers of endothelial activation and…
- Trial name
- HYPER-endoEV-a (NCT07728630)
- Where
- Croatia
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Josip Juraj Strossmayer University of Osijek
Abnormal Uteroplacental Circulation
Study on Doppler Ultrasound Measurement of Changes in Uterine Artery Blood Flow in Normal First Trimester Pregnancies and Its Prediction on Abortion
Objective:To explore the study of Doppler ultrasound in first trimester pregnancies to measure the change of uterine artery blood flow in normal pregnancies and the prediction on abortion, which provides a certain reference for…
- Trial name
- NCT06043804
- Testing
- Doppler ultrasound measurement of changes in uterine artery blood flow
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Second Affiliated Hospital of Wenzhou Medical University
Healthy, Aging
Brain Blood Flow: Age and Gender
Baseline cerebral blood flow through the middle cerebral artery (MCA) and cerebral vasodilator response of the MCA to inhaled carbon dioxide (CO2) will be measured in young women, young men, older women, and older men using…
- Trial name
- NCT02840851
- Testing
- MRI, TCD
- Where
- United States
- Volunteers
- 46 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Cerebroplacental Ratio
Does the Cerebroplacental Ratio (CPR) Predict Adverse Outcomes in Low Risk Pregnancies?
Ultrasound Doppler studies are used during pregnancy to help manage pregnancies complicated by fetal growth restriction. The cerebroplacental ratio may predict adverse outcomes in low risk pregnancies.
- Trial name
- CPR (NCT03066726)
- Where
- 6 sites in United States
- Volunteers
- 580 people, healthy volunteers welcome
- Sponsor
- Rutgers, The State University of New Jersey
Hemodynamics, Biosensors
Validation of Ballistocardiographic Biosensors and Other Hemodynamic Measures for Healthy Subjects
Ballistocardiographic (BCG) biosensors reflecting the patients' current state is established. There are few studies documenting BCG biosensors efficacy, effectiveness, and efficiency.
- Conditions
- Hemodynamics, Biosensors, Cardiac
- Trial name
- NCT04585568
- Testing
- Biosensors
- Where
- Norway
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Oslo University Hospital
Recurrent Pregnancy Loss
Uterine Artery Doppler Changes After Vaginal Administration of Isosorbide Mononitrate In Patients With URPL
compare uterine artery blood flow before and after the administration of Isosorbide mononitrate as a nitric oxide donor during mid secretory phase of menstrual cycle for patients with unexplained recurrent pregnancy loss.
- Trial name
- NCT05341856
- Testing
- isosorbide mononitrate
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Al-Azhar University
Mechanical Dyssynchrony, Heart Failure
Evaluating Effects of a Left Bundle Branch Block
A left bundle branch block (LBBB) is related to abnormal cardiac conduction and mechanical asynchrony and is associated with hypertension and coronary artery disease.
- Conditions
- Mechanical Dyssynchrony, Heart Failure, Bundle-Branch Block
- Trial name
- NCT00269659
- Where
- Netherlands
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Amsterdam UMC, location VUmc