Clinical trials: Doppler
Histamine Biotransformation
In Vivo Assessment of Histamine Pharmacodynamics
A critical first step to address the "pharmacodynamic information gap" in pediatrics resides with the development of methods capable of accurately measuring the time dependent effects of xenobiotic exposure in a manner sufficient…
- Trial name
- NCT00809692
- Testing
- validated techniques for histamine response, new technique for histamine response
- Where
- United States
- Sponsor
- Children's Mercy Hospital Kansas City
Critical Illness, Pediatrics
Comparing Cardiac Output Measurements in Critically Ill Children Using USCOM and Transthoracic ECHO
The purpose of this study is to compare the accuracy and precision of two non-invasive methods of measuring cardiac output in critically ill children (<18 yrs).
- Trial name
- NCT01460329
- Testing
- Ultrasonic Cardiac Output Monitor (USCOM).
- Where
- United States
- Volunteers
- 22 people
- Sponsor
- University of North Carolina, Chapel Hill
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
Neonatal Sepsis, Markers
Tissue Doppler Echocardiographic Assessment of Cardiac Function in Neonatal Sepsis
1. To assess myocardial function in neonates with sepsis using tissue doppler echocardiography. 2. To assess sepsis induced cardiac dysfunction. 3.
- Trial name
- NCT07572916
- Testing
- cardiac troponin, and blood culture
- Where
- Egypt
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Assiut University
Fractures, Bone, Upper Extremity Injury
Ultrasonography in Fracture Management
The bone fracture is usually diagnosed using an X-ray examination (the method of choice). However, in the case of the youngest patients (children and adolescents), it carries a potential risk of X-ray radiation exposure.
- Conditions
- Fractures, Bone, Upper Extremity Injury, Healing Fracture of Bone, Vascularization
- Trial name
- UFrac (NCT04501510)
- Testing
- Ultrasonographic examination validation and testing
- Where
- Poland
- Volunteers
- 50 people
- Sponsor
- University of Warmia and Mazury
Thermography, Laser Doppler Blood Flow
Imaging of Adult Burn Injuries
Burn injuries are a common presentation to A\&E in the UK (175,000 per year) of whom 13,000 require hospital admission. Treatment of a single burn can cost more than £63,000, and is ultimately dependent on the depth.
- Conditions
- Thermography, Laser Doppler Blood Flow, Spectrophotometric Intracutaneous Analysis
- Trial name
- NCT02074787
- Testing
- Thermography, Laser Doppler, Spectrophotometric Intracutaneous analysis
- Where
- United Kingdom
- Volunteers
- 30 people
- Sponsor
- Chelsea and Westminster NHS Foundation Trust
Head Injury
Transcranial Doppler Measurement and Prognosis in Moderate Head Injury
The purpose of this study is to determine whether Transcranial Doppler measurements have correlation with neuropsychological test (Galvestone Orientation Amnesia Test), TC image (Marshall Scale) and prognosis (DRS and GOS) in…
- Trial name
- NCT00353444
- Where
- Mexico
- Volunteers
- 70 people
- Sponsor
- Universidad Autonoma de San Luis Potosí
Stroke
A RCT to Establish the Effectiveness of Intermittent Pneumatic Compression to Prevent Post Stroke DVT
Strokes occur when blood flow to part of the brain is interrupted. Patients are often bedbound for several days or weeks although if they survive, most will make some recovery.
- Trial name
- CLOTS-3 (NCT00789542)
- Testing
- Intermittent Pneumatic compression, Routine care
- Where
- United Kingdom
- Volunteers
- 2,876 people
- Sponsor
- University of Edinburgh
Other Acute Illnesses Presenting to the Hospital, Heart Failure
Evaluation of Implementation of a National Point-of-Care Ultrasound Training Program
This VA QUERI Partnered Evaluation Initiative will evaluate the impact of an immersive Point-of-care Ultrasound (POCUS) Training Course on provider skill acquisition and retention; the frequency of POCUS use by trained providers…
- Conditions
- Other Acute Illnesses Presenting to the Hospital, Heart Failure, Pneumonia, Deep Venous Thrombosis
- Trial name
- NCT03296280
- Where
- United States
- Volunteers
- 116 people, healthy volunteers welcome
- Sponsor
- VA Office of Research and Development
Cardiovascular Diseases, Microvascular Complications
Non-invasive Microvascular Assessment in Individuals at High Risk of Cardiovascular Disease From the SCAPIS2 Study
Microvascular dysfunction, particularly endothelial dysfunction, is increasingly recognized as a key mechanism underlying various cardiovascular diseases (CVD), including heart failure, ischemic heart disease, atherosclerosis…
- Trial name
- NCT07359768
- Where
- Sweden
- Volunteers
- 900 people
- Sponsor
- HJN Sverige AB/Neko Health
Thyrotoxicosis, Peak Systolic Velocity of Superior Thyroid Artery
Differential Diagnosis of STA-PSV in Thyrotoxicosis
Aim: Graves's disease and thyroiditis can both characterized with thyrotoxicosis, but their clinical outcome and therapy is quiet different.
- Conditions
- Thyrotoxicosis, Peak Systolic Velocity of Superior Thyroid Artery, Thyroiditis, Graves Disease
- Trial name
- NCT01227499
- Where
- China
- Volunteers
- 169 people
- Sponsor
- xiaolong zhao
Cerebral Blood Flow
Cerebral Blood Flow in Term and Preterm Neonates Using Doppler Ultrasonography
This study aims to evaluate cerebral blood flow in stable term and preterm newborns using Doppler ultrasonography. By measuring and comparing PSV, EDV, RI, and PI in the main brain arteries, the study seeks to identify normal…
- Trial name
- NCT07427342
- Where
- Egypt
- Volunteers
- 200 people
- Sponsor
- Assiut University
Preeclampsia
PP13 and Doppler Study to Predict Preeclampsia
Assessment of biochemical and sonographic marker to predict the risk for developing preeclampsia Among biochemical markers are serum level of Placental Protein 13 (PP13) and Placenta Growth factor (PIGF).
- Trial name
- NCT00928213
- Testing
- Progesterone, Low molecular weight Heparin, No Drug
- Where
- Israel
- Volunteers
- 1,000 people
- Sponsor
- Ben-Gurion University of the Negev
Congenital Heart Defects
Use of Color Doppler in Routine Examination of Fetal Heart in Second Trimester
To evaluate the percentage of severe heart defect diagnosed with the use of color Doppler at a routine fetal scan in the second trimester of pregnancy
- Trial name
- NCT01201486
- Where
- Norway
- Volunteers
- 6,781 people
- Sponsor
- Helse Stavanger HF
Sickle Cell Disease
Measurement of Cerebral Blood Flow Using Transcranial Doppler Ultrasound in Children With Sickle Cell Disease
Sickle cell disease (SCD) affects haemoglobin - the molecule in blood cells which carries oxygen. It causes red blood cells to become abnormal crescent (or sickle)- shaped.
- Trial name
- NCT02090881
- Testing
- Ultrasound scan
- Where
- United Kingdom
- Volunteers
- 25 people
- Sponsor
- Imperial College Healthcare NHS Trust
Scoliosis
Accuracy of Pleth Variability Index (PVI) in Children
Plethysmographic Variability index is a simple index accurate in predicting fluid responsiveness. The aim of this study was to investigate its accuracy in predicting fluid response to intravenous fluid challenge during scoliosis…
- Trial name
- PVI (NCT01820845)
- Where
- France
- Volunteers
- 50 people
- Sponsor
- Assistance Publique - Hôpitaux de Paris
Port-wine Stains (PWS)
The Angioma's Treatment Evaluation With Laser Doppler Imaging (LDI)
Based on the Doppler effect, Laser Doppler Imaging (LDI) uses the interaction of light with moving erythrocytes to visualize perfusion in the microcirculatory system.
- Trial name
- TALDI (NCT01759082)
- Volunteers
- 20 people
- Sponsor
- University of Lausanne Hospitals
Ischemic Congestive Cardiomyopathy, Dilated Cardiomyopathy
Optimizing Left Ventricular Lead To Improve Cardiac Output
The purpose of this study is to determine if optimal lead placement, guided by the largest improvement in aortic flow measured by Doppler will: 1. Improve the way the heart's left ventricle functions 2.
- Conditions
- Ischemic Congestive Cardiomyopathy, Dilated Cardiomyopathy, Congestive Heart Failure
- Trial name
- CARE/VOLCANO (NCT01399801)
- Testing
- Doppler flow measurement, standard implantation of the LV lead
- Where
- United States
- Volunteers
- 12 people
- Sponsor
- Ann Marie Chikowski
Diabetes
Pioglitazone on Cardiac Function and Large Arteries (PICCOLA Study)
This study aims to use a novel, sensitive, non-invasive scanning technique to investigate the effects of insulin-sensitizing agent pioglitazone, on heart and artery function.
- Trial name
- PICCOLA (NCT00485056)
- Testing
- Pioglitazone
- Where
- United Kingdom
- Volunteers
- 24 people
- Sponsor
- Imperial College London
Traumatic Brain Injury
Transcranial Doppler on Admission of Patients With Mild to Moderate Traumatic Brain Injury
Patients with mild to moderate traumatic brain injury (TBI) are at risk for secondary neurological deterioration. Their outcome within the first week after injury could be predicted by clinical signs, brain CT scan and…
- Trial name
- TCD (NCT01291706)
- Testing
- Transcranial Doppler
- Where
- 21 sites in France
- Volunteers
- 369 people
- Sponsor
- University Hospital, Grenoble