Clinical trials: Ultrasonography, Doppler, Transcranial
Traumatic Brain Injury
Intensive Monitoring of Brain Injured Patients
Analysis of cerebral blood flow (CBF) and oxygenation using complementary focal and global monitoring techniques will permit the delivery of more informed individualised and 'targeted' therapy on the patient with severe head…
- Trial name
- NCT00163774
- Testing
- Brain oxygenation and microdialysis catheters
- Where
- Australia
- Volunteers
- 20 people
- Sponsor
- Bayside Health
Arterial Ischemic Stroke
Early Doppler-Assisted Mobilization in Adults After Acute Ischemic Stroke
Post-stroke mobilization remains a subject of ongoing debate. While early mobilization-particularly the first out-of-bed mobilization-has been associated with reduced systemic complications and earlier rehabilitation, it also…
- Trial name
- DOP-MOBILIZE (NCT07232498)
- Testing
- Doppler-guided early mobilization
- Where
- 7 sites in Croatia, Portugal
- Volunteers
- 1,300 people
- Sponsor
- Unidade Local de Saúde de Coimbra, EPE
Sickle Cell Disease
Aspirin Prophylaxis in Sickle Cell Disease
Neurologic complications secondary to cerebrovascular damage are prevalent in children with sickle cell disease. These patients experience both clinically overt cerebrovascular accidents and "silent infarctions" demonstrated by…
- Trial name
- START (NCT00178464)
- Testing
- aspirin
- Volunteers
- 11 people
- Sponsor
- University of Rochester
Traumatic Brain Injury, Subarachnoid Hemorrhage
Lactate Therapy After Traumatic Brain Injury
Background: Although glucose is essential to cerebral function, abundant experimental and clinical evidence demonstrates that endogenously released lactate, rather than glucose, is the preferential energy substrate for the brain…
- Trial name
- LS_TCC (NCT01573507)
- Testing
- sodium lactate infusion
- Where
- Switzerland
- Volunteers
- 42 people
- Sponsor
- Centre Hospitalier Universitaire Vaudois
Cerebral Hemodynamics, Mechanical Ventilation Strategies
Cerebral Hemodynamic Effects of Individualized PEEP During Robotic Prostatectomy
This randomized clinical trial will compare two approaches to setting positive end-expiratory pressure (PEEP) during robot-assisted radical prostatectomy performed in the Trendelenburg position.
- Conditions
- Cerebral Hemodynamics, Mechanical Ventilation Strategies, Robotic Prostatectomy
- Trial name
- NCT07784010
- Testing
- Individualized PEEP Titration, Standard PEEP Group
- Where
- Turkey (Türkiye)
- Volunteers
- 45 people
- Sponsor
- Istanbul University
Trancranial Doppler
Transcranial Ultrasound and Transcranial Doppler in Diagnosis and Detection of Outcome in Infants With Neurological Diseases
To evaluate the accuracy of transcranial ultrasound in detection of brain pathology in infants with neurological diseases and value of transcranial Doppler in evaluation of intracerebral blood flow in comparison with other…
- Trial name
- NCT06352931
- Testing
- transcranial and transcranial dopp;er
- Volunteers
- 50 people
- Sponsor
- Assiut University
Stroke, Intracerebral Hemorrhage
AI-assisted Transcranial Duplex Sonography for Early Detection of Intracerebral Haemorrhage: HYPER-AI-SCAN
The goal of this observational study is to evaluate whether transcranial Doppler ultrasound, combined with artificial intelligence (AI), can help identify intracerebral haemorrhage (ICH) in people with acute stroke (both men and…
- Conditions
- Stroke, Intracerebral Hemorrhage, Intracerebral Hemorrhage Basal Ganglia, Intracerebral Haemorrhage
- Trial name
- NCT07319013
- Where
- Spain
- Volunteers
- 500 people
- Sponsor
- Hospital Universitari Vall d'Hebron Research Institute
Stroke
Safety Study of External Counterpulsation as a Treatment for Acute Ischemic Stroke
The purpose of this study is to determine if external counterpulsation (ECP) is feasible to perform, tolerable, and safe as a treatment for patients with acute ischemic stroke (i.e., a blockage of one of the arteries supplying a…
- Trial name
- CUFFS (NCT00983749)
- Testing
- Full-pressure ECP
- Where
- 3 sites in United States
- Volunteers
- 23 people
- Sponsor
- University of California, San Diego
Transient Ischemic Attack
Cerebral Haemodynamics in Transient Ischaemic Attack
Adequate brain blood flow is essential for brain survival and function. Brain blood flow is kept relatively constant by a process called cerebral autoregulation (CA).
- Trial name
- NCT03886129
- Testing
- Transcranial Doppler Ultrasound (TCD)
- Where
- United Kingdom
- Volunteers
- 2 people, healthy volunteers welcome
- Sponsor
- University of Leicester
Cardiac Arrest
Doppler Sonography of Cerebral Blood Flow for Early Prognostication After Out-of-hospital Cardiac Arrest
Objective: To assess neurologic prognostication by early Transcranial Doppler Sonography (TCD) in comatose survivors after cardiac arrest.
- Trial name
- DOTAC (NCT03270683)
- Where
- France
- Volunteers
- 52 people
- Sponsor
- Rennes University Hospital
Traumatic Brain Injury, Subarachnoid Hemorrhage
NOninVasive Intracranial prEssure From Transcranial doppLer Ultrasound Development of a Comprehensive Database of Multimodality Monitoring Signals for Brain-Injured Patients
This is an observational study in neurocritical care units at University of California San Francisco Medical Center (UCSFMC), Zuckerberg San Francisco General Hospital (ZSFGH), UC Davis, and Emory University.
- Conditions
- Traumatic Brain Injury, Subarachnoid Hemorrhage, Intracerebral Hemorrhage, Liver Failure
- Trial name
- NOVEL ICP (NCT04548596)
- Testing
- Transcranial Doppler
- Where
- 3 sites in United States
- Volunteers
- 162 people
- Sponsor
- Emory University
Aortic Diseases, Cardiac Surgical Procedures
Selective Antegrade Cerebral Perfusion and Perioperative Optic Nerve Sheath Diameter in Ascending Aortic Surgery
In ascending aortic surgery the distal anastomosis may be constructed with the aortic cross-clamp maintained, or, where the extent of the aortic pathology and the geometry of the graft require it, after release of the cross-clamp…
- Conditions
- Aortic Diseases, Cardiac Surgical Procedures, Aortic Aneurysm, Thoracic, Delirium - Postoperative
- Trial name
- SACP-ONSD (NCT07800806)
- Testing
- Optic nerve sheath and optic nerve diameter ultrasonography, Transcranial Doppler ultrasonography
- Where
- Turkey (Türkiye)
- Volunteers
- 134 people
- Sponsor
- Koşuyolu Kartal Heart Training and Research Hospital
Postoperative Cognitive Dysfunction
Identification of Factors Causing Postoperative Cognitive Dysfunction in Patients Undergoing Cardiac Surgery With CPB
The incidence of cognitive decline occurs in 53% of patients after cardiac surgery. Causes of POCD can be various: age, duration of cardiac bypass, medicaments and many others.
- Trial name
- NCT03641833
- Testing
- blood sample for brain biomarkers
- Where
- Lithuania
- Volunteers
- 130 people
- Sponsor
- Rasa Bukauskiene
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
Cerebrovascular Circulation
NIRS vs TCD for Cerebrovascular Autoregulation During Non-cardiac Surgery
Postoperative neurocognitive disorders (NCD) are of high priority in perioperative management. The risk of suffering from NCD after surgery may be increased due to perioperative impairment of cerebrovascular autoregulation and…
- Trial name
- SONICA (NCT04978558)
- Testing
- Continuous assessment of cerebrovascular autoregulation with NIRS and TCD
- Where
- Germany
- Volunteers
- 509 people
- Sponsor
- Universitätsklinikum Hamburg-Eppendorf
Cardiovascular, Diabetic
Exercise and Cardiovascular Control During Upright Tilt in Older Adults With Type 2 Diabetes
Older persons with diabetes have a harder time maintaining blood pressure when standing up. When blood pressure drops when standing up, fainting may occur.
- Trial name
- NCT00387452
- Testing
- Aerobic Exercise and Strength Exercise, Strength training
- Where
- Canada
- Volunteers
- 64 people, healthy volunteers welcome
- Sponsor
- University of British Columbia
Cerebral Vascular Accident (CVA)/Stroke
Transcranial Doppler (TCD) Ultrasound and Cognition in Cerebral Vascular Disease. (SUNRISE)
This study aims to contribute to the identification of factors that may be predictive of cognitive function and to provide data on cerebral hemodynamic in ischemic and haemorrhagic stroke.
- Trial name
- SUNRISE (NCT06735274)
- Testing
- Cerebral Autoregulation (CAR), Neurovascular coupling (NVC), Microembolic signals (MES)
- Where
- Portugal
- Volunteers
- 517 people
- Sponsor
- Universidade do Porto
Coronary Artery Bypass Graft Redo, Heart Valve Diseases
SONOlysis in Risk REduction of Symptomatic and Silent Brain infarCtions dUring Cardiac surgEry
The aim of the project is to demonstrate a fibrinolytic effect of sonothrombolysis (continual transcranial Doppler monitoring) using 2 MHz diagnostic probe on the reduction of risk of brain infarctions due to the activation of…
- Trial name
- SONORESCUE (NCT01591018)
- Testing
- sonolysis, cardiac surgery
- Where
- Czechia
- Volunteers
- 120 people
- Sponsor
- University Hospital Ostrava
Stroke
Hydroxyurea to Prevent Stroke in Children With Sickle Cell Anemia and Elevated TCD Flow Velocity
The purpose of this study is to assess prospectively the efficacy of hydroxyurea therapy in the setting of cerebrovascular disease, manifest as conditional or abnormal transcranial doppler ultrasonography (TCD) flow velocities…
- Trial name
- NCT00402480
- Testing
- Hydroxyurea
- Where
- United States
- Volunteers
- 50 people
- Sponsor
- Duke University