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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT02759653
Other study ID # 2015/1217
Secondary ID
Status Completed
Phase
First received
Last updated
Start date May 2016
Est. completion date December 31, 2018

Study information

Verified date August 2016
Source Haukeland University Hospital
Contact n/a
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

BACKGROUND: In 30-40% the cause of ischemic stroke remains undetermined. Most likely, this category hides an additional number of strokes caused by artery-to-artery embolisms due to unidentified atherosclerotic disease, or caused by cardioembolism. Both types are associated with a high risk of recurrent ischemic events and multiple cerebral infarctions. Large-artery atherosclerosis of the brain-supplying arteries is the assumed underlying cause in 10 to 15% of ischemic stroke, mostly deriving from the extracranial carotid artery. Carotid intima-media thickness (cIMT) measured by 2-dimensional (2D) B-mode ultrasonography and estimation of the overall atherosclerotic plaque burden aids future risk prediction. Arterial wall changes, artery caliber variations, degree of stenosis, local hemodynamic alterations and certain plaque characteristics are important for the evaluation of plaque vulnerability and vascular risk stratification. Transcranial Doppler monitoring (TCDM) is a non-invasive bedside examination eligible for detection of microemboli in the human cerebral circulation. HYPOTHESIS: Atherosclerotic stenosis and plaque characteristics can be more accurately assessed by the combination of routine 2D ultrasound, contrast enhanced ultrasound (CEUS), and 3-dimensional (3D) ultrasound. TCDM, CEUS and 3D visualization of the carotid plaque improve the differentiation of stroke etiology and quantification of plaque vulnerability, and aid the prediction of future risk for cerebrovascular events in the individual patient. AIMS: Assessment of prevalence and frequency of Microemboli signals (MES) in unselected patients with cerebral ischemia, the influence of antithrombotic drugs on MES, and the relationship between MES and recurrent stroke or Transient ischemic attack (TIA). Categorization of atherosclerotic carotid artery disease by use of routine and advanced neurosonographic techniques combined with anamnestic and clinical data. Development of a visualization solution tailored for 3D visualization of carotid arteries and semi-automatic plaque segmentation.


Description:

- Standardized questionnaire - Extracranial and transcranial duplexsonography - Extracranial contrast-enhanced ultrasound - Extracranial 3D-ultrasound - Transcranial Doppler monitoring - Clinical work-up incl. radiological and cardiological procedures, scoring etc


Recruitment information / eligibility

Status Completed
Enrollment 16
Est. completion date December 31, 2018
Est. primary completion date December 31, 2018
Accepts healthy volunteers No
Gender All
Age group 15 Years and older
Eligibility Inclusion Criteria: - Symptomatic carotid artery disease - Asymptomatic carotid artery disease

Study Design


Locations

Country Name City State
Norway Haukeland University Hospital Bergen

Sponsors (2)

Lead Sponsor Collaborator
Haukeland University Hospital University of Bergen

Country where clinical trial is conducted

Norway, 

Outcome

Type Measure Description Time frame Safety issue
Primary Ischemic stroke or TIA documented by Medical record 3 months
Secondary Any arterial event documented by Medical record (composite) Ischemic stroke, TIA, Coronary artery disease, Myocardial infarction, Peripheral arterial disease 3 months
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