Clinical trials: Ultrasonography, Doppler, Transcranial
General Anesthesia
Cerebral Perfusion Variation During Blood Pressure Changes Under General Anesthesia
The risk associated with arterial hypotension during general anesthesia for surgery has been demonstrated , but the threshold at which consequences for perfusion of one or more organs appear varies according to the mechanism of…
- Trial name
- DELTAPAMAG (NCT05803876)
- Testing
- Diagnostic test - monitoring
- Where
- France
- Volunteers
- 100 people
- Sponsor
- Assistance Publique - Hôpitaux de Paris
Cerebral Hypoperfusion, Cerebral Occlusion
Evaluation of Cerebral Blood Flow and Cerebral Oxygenation With Transcranial Doppler and NIRS in Laparoscopic Cholecystectomy Cases
The goal of this clinical trial is to test intracranial blood flow and cerebral oxygenisation changes in patients who have pneumoperitoneum in laparoscopic cholecystectomy procedure.
- Conditions
- Cerebral Hypoperfusion, Cerebral Occlusion, Cholecystitis; Gallstone, Cholecystitis/Cholelithiasis
- Trial name
- NIRS L/C (NCT06036498)
- Testing
- Near Infrared Spectrophotometry Device, Transcranial Doppler Ultrasonography
- Where
- Turkey (Türkiye)
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Uludag University
Ischemic Stroke
Hemodynamic Effects on Cerebral Autoregulation in Acute Stroke
This study investigates if there are hemodynamic alterations in acute stroke that predispose patients to impaired perfusion and regulation of cerebral blood flow.
- Trial name
- NCT02056821
- Where
- United States
- Volunteers
- 88 people
- Sponsor
- Henry Ford Health System
Vasospasm
Comparing the Nautilus NeuroWaveTM to TCD or DSA for the Detection of Vasospasm
To determine the efficacy of using the Jan Medical NNW system as a diagnostic aid in detection of moderate and severe vasospasm for detection of vasospasm in patients with subarachnoid hemorrhage.
- Trial name
- NCT02071875
- Testing
- Nautilus NeuroWaveTM recording
- Where
- Germany
- Volunteers
- 43 people
- Sponsor
- Jan Medical, Inc.
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
Microemboli, Stroke
A Multicenter Study to Optimize Microembolic Signal Classification Based on Double--Blind Multiparametric Assessment by Human Experts Using an Universal Graphical Interface [MESOMEGA]
Microembolic signals (MES) is a powerful predictor of future embolic events. This study aims to develop and validate a accurate model of classification of MES obtained by transcranial Doppler.
- Conditions
- Microemboli, Stroke, Transcranial Doppler Ultrasound
- Trial name
- MESOMEGA (NCT07172165)
- Testing
- Expert double-blind evaluation
- Where
- Portugal
- Volunteers
- 850 people
- Sponsor
- Universidade do Porto
Postdural Puncture Headache
Prediction of Post-dural Puncture Headache in Parturients Undergoing Elective Caesarean Section
The parturients are at particular risk of post dural puncture headache (PDPH) because of their sex, young age, and the widespread application of spinal and epidural anesthesia.
- Trial name
- NCT03464253
- Testing
- Performance of the transcranial Doppler (TCD)
- Where
- Egypt
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Zagazig University
Subarachnoid Hemorrhage
Impact of Early Mobilization on SAH Patients Physiological Parameters
The aim of the study is to evaluate the physiological response to out-of-bed mobilization in patients admitted to the intensive care unit for subarachnoid hemorrhage.
- Trial name
- MOBALPAH (NCT06286683)
- Testing
- lung ultrasound, Transcranial Doppler, near-infrared spectroscopy (NIRS)
- Where
- France
- Volunteers
- 100 people
- Sponsor
- Assistance Publique - Hôpitaux de Paris
Anterior Cerebral Artery Syndrome, Anterior Cerebral Artery Stroke
Transcranial Doppler Evaluation After Endovascular Thrombectomy for Acute Ischemic Stroke (PRECISE-TCD)
Endovascular thrombectomy (EVT) improves outcomes in acute ischemic stroke caused by large vessel occlusion. Despite successful recanalization, early neurological deterioration (END) remains frequent and is associated with poor…
- Conditions
- Anterior Cerebral Artery Syndrome, Anterior Cerebral Artery Stroke, Acute Ischemic Stroke, Cardioembolic Stroke
- Trial name
- NCT07013396
- Testing
- Transcranial Doppler (TCD) examination
- Where
- United States
- Volunteers
- 100 people
- Sponsor
- Virginia Commonwealth University
Intracerebral Haemorrhage
Ischaemic Lesions in Acute Intracerebral Haemorrhage
The aim of this observational study is to determine how and why inadequate brain blood flow occurs after bleeding in patients with intracerebral haemorrhage (ICH).
- Trial name
- CHALLENGE-ICH (NCT06410274)
- Testing
- Transcranial Doppler ultrasonography (TCD)
- Where
- United Kingdom
- Volunteers
- 120 people
- Sponsor
- University of Leicester
Cerebral Infarction
Effect of Cilostazol in the Acute Lacunar Infarction Based on Pulsatility Index of Transcranial Doppler
RATIONALE: Elevation in pulsatility indices (PIs), measured by transcranial Doppler (TCD), has been postulated to reflect downstream increased vascular resistance caused by small-vessel disease (SVD).
- Trial name
- ECLIPse (NCT00741286)
- Testing
- Aspirin, cilostazol
- Where
- 8 sites in South Korea
- Volunteers
- 203 people
- Sponsor
- Inje University
Aortic Valve Stenosis, Extracorporeal Circulation
Cerebral Embolic Load in Patients Undergoing Surgical Aortic Valve Replacement: A Comparison of the Conventional With the Minimized Extracorporeal Circulation Technique Using Transcranial Doppler Ultrasound
In this study, the investigators aim to compare cerebral embolic load in patients undergoing surgical aortic valve replacement using either the minimized extracorporeal circulation or the conventional extracorporeal circulation…
- Trial name
- AKE-MECC (NCT02308566)
- Testing
- Minimized Extracorporeal Circulation (MECC), Conventional Extracorporeal Circulation (CECC)
- Where
- Switzerland
- Volunteers
- 48 people
- Sponsor
- Insel Gruppe AG, University Hospital Bern
Heart Failure, Cognitive Impairment
TRAnscranial Doppler CErebral Blood Flow and Cognitive IMPAIRment in Heart Failure
TRACE-IMPAIR is a prospective, clinical study of consecutive patients that evaluates the relationship between heart failure (HF) and cognitive impairment in relation to carotid and cerebral flow.
- Conditions
- Heart Failure, Cognitive Impairment, Carotid Stenosis
- Trial name
- TRACE-IMPAIR (NCT05250349)
- Testing
- Echocardiography, Doppler sonography, Neuropsychological tests
- Where
- Poland
- Volunteers
- 300 people
- Sponsor
- John Paul II Hospital, Krakow
Migraine
Transcranial Magnetic Stimulation in Episodic Migraine (Magnet-EM)
This study will assess the safety and efficacy of repetitive transcranial magnetic stimulation (rTMS) as new preventive treatment of migraine.
- Trial name
- Magnet-EM (NCT03556722)
- Testing
- Repetitive Transcranial Magnetic Stimulation.
- Where
- Malaysia
- Volunteers
- 76 people
- Sponsor
- Universiti Putra Malaysia
Carotid Occlusion Intolerance
Prediction of Carotid Occlusion Intolerance by Transcranial Doppler Evaluation in Patients Undergoing Carotid Artery Stenting With Proximal Flow Arrest Protection System.
The aim of this observational pilot study is to determine whether intolerance of carotid occlusion during carotid artery stenting can be predicted with preprocedural transcranial Doppler evaluation.
- Trial name
- NCT01922609
- Where
- Czechia
- Volunteers
- 30 people
- Sponsor
- University Hospital, Motol
Acute Brain Injury
Frontal Bone Window in ICUF (FBW-ICU)
Transcranial doppler (TCD) is an established tool for monitoring flows in intracranial cerebral arteries. Its use is recommanded in the last guidelines on traumatic brain injury.
- Trial name
- FBW-ICU (NCT02832895)
- Testing
- Transcranial doppler examination
- Where
- France
- Volunteers
- 150 people
- Sponsor
- University Hospital, Montpellier
Trans Cranial Doppler Ultrasonography in Heamodynamic Optimisation in Septic Shock
Hemodynamic Optimisation Guided With Transcranial Doppler in Septic Shock
Randomized, controlled, prospective trial, including ICU patients with Sepsis or septic Shock, at the early phase. patients will be randomized in 2 groups regarding the hemodynamic management and catecholamin doses: Group 1…
- Trial name
- NCT04398069
- Testing
- hemodynamic optimisation aiming to achieve normal cerebral perfusion
- Where
- Tunisia
- Volunteers
- 24 people
- Sponsor
- Mongi Slim Hospital
Subarachnoid Hemorrhage, Aneurysmal, Cerebral Vasospasm
Stellate Ganglion Block in Preventing Cerebral Vasospasm Secondary to Subarachnoid Hemorrhage
To investigate whether the stellate ganglion block is helpful in relieving cerebral vasospasm during aneurysmal coil embolism surgery. The effect was assessed by Transcranial Doppler (TCD).
- Trial name
- NCT04512859
- Testing
- Stellate Ganglion Block
- Volunteers
- 160 people
- Sponsor
- Beijing Tiantan Hospital
Cerebral Infarction
Identification the Cause of Silent Cerebral infarctiON in Healthy Subjects (ICONS)
We hypothesized that paradoxical embolism may be one of the main mechanisms of silent cerebral infarction (SCI) located outside the perforating artery territory.
- Trial name
- ICONS (NCT01429948)
- Where
- South Korea
- Volunteers
- 581 people
- Sponsor
- Samsung Medical Center
Multiple Sclerosis
Transcranial Doppler in Multiple Sclerosis
The aim of this study is to investigate the potential of Transcranial doppler (TCD) and Near-Infrared Spectroscopy (NIRS), more simple and non-invasive bedside methods than magnetic resonance imaging (MRI), to evaluate changes in…
- Trial name
- TRADOMS (NCT02389426)
- Testing
- TCD baseline, TCD after bosentan administration, NIRS baseline
- Where
- Belgium
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Universitair Ziekenhuis Brussel