Carotid Endarterectomy Versus Carotid Artery Stenting? A Prospective Comparison of Neuropsychological Outcome in Patients With Carotid Stenosis.

November 18, 2021 updated by: University Ghent
In this prospective study, patients with carotid stenosis will be randomly assigned to one of the two surgical procedures (carotid endarterectomy (CEA) and carotid stenting (CAS)). Pre- and postoperative neuropsychological functions, levels of several biomarkers and intraoperative embolization load will be examined. In a subgroup of patients, MRI-data will also be gathered. The mix of these data will allow us to answer several questions regarding the absence or presence of preoperative impairments, postoperative changes in cognitive performance and possible differences between CEA and CAS regarding postoperative neuropsychological functions. The use of a matched control group and implementation of a long term follow-up will contribute to the uniqueness of this study. It will meet several flaws of previous studies and will complete the ongoing randomized studies comparing CEA and CAS that are lacking neuropsychological data.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
100

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Belgium
      • Ghent, Belgium
        • Ghent University Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Patients with carotid stenosis.

Exclusion Criteria:

  • Significant medical conditions which affect neurocognitive functions (e.g. cancer, epilepsy)
  • Older than 80 years
  • A history of psychiatric or neurological illness
  • Severe alcohol of drug abuse
  • Coronary artery bypass graft (CABG) less than a year ago.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Diagnostic
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Carotid endarterectomy (CEA)
Patients with carotid stenosis who are randomly assigned to a carotid endarterectomy.
Procedure: Carotid endarterectomy (CEA)
Carotid endarterectomy (CEA) will be performed on the patients
Procedure: Neurocognitive functions
Neurocognitive functions will be measured pre-operatively and after 3 weeks, 6 months and 1 year.
Procedure: Levels of biomarkers
Levels of biomarkers (Protein S100B) will be examined pre- , peri- and post-operatively after 2 hours, 6 hours and 24 hours.
Procedure: Detection of peri-operative embolization
A Transcranial Doppler Ultrasonography will be used to detect peri-operative embolization.
Procedure: Validation results
On a subgroup of 20 patients a MRI-scan will be done pre- and post-operatively after 48 hours and 3 weeks.
Experimental: Carotid Stenting (CAS)
Patients with carotid stenosis who are randomly assigned to a carotid stenting.
Procedure: Neurocognitive functions
Neurocognitive functions will be measured pre-operatively and after 3 weeks, 6 months and 1 year.
Procedure: Levels of biomarkers
Levels of biomarkers (Protein S100B) will be examined pre- , peri- and post-operatively after 2 hours, 6 hours and 24 hours.
Procedure: Detection of peri-operative embolization
A Transcranial Doppler Ultrasonography will be used to detect peri-operative embolization.
Procedure: Validation results
On a subgroup of 20 patients a MRI-scan will be done pre- and post-operatively after 48 hours and 3 weeks.
Procedure: Carotid stenting (CAS)
Carotid Stenting (CAS) will be performed on these patients.
No Intervention: matched control group
Matched control group.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Pre-operative neuropsychological state
Time Frame: pre-operative
Pen and paper tests will be performed.
pre-operative
Post-operative neuropsychological state (3 weeks)
Time Frame: after 3 weeks
Pen and paper tests will be performed.
after 3 weeks
Post-operative neuropsychological state (6 months)
Time Frame: after 6 months
Pen and paper tests will be performed.
after 6 months
Post-operative neuropsychological state (1 year)
Time Frame: after 1 year
Pen and paper tests will be performed.
after 1 year

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Levels of biomarkers pre-operatively
Time Frame: pre-operatively, intra-operative, after 2 hours, 6 hours and 24 hours
Levels of biomarkers (protein S100B) will also be examined pre-operatively.
pre-operatively, intra-operative, after 2 hours, 6 hours and 24 hours
Determination of cardiovascular risks pre-operatively
Time Frame: pre-operatively
questionnaires
pre-operatively
Determination of cardiovascular risks after 3 weeks
Time Frame: after 3 weeks
questionnaires
after 3 weeks
Determination of cardiovascular risks after 6 months
Time Frame: after 6 months
questionnaires
after 6 months
Determination of cardiovascular risks after 1 year
Time Frame: after 1 year
questionnaires
after 1 year
Clinical neurological examination after 3 weeks
Time Frame: after 3 weeks
after 3 weeks
Clinical neurological examination after 6 months
Time Frame: after 6 months
after 6 months
Clinical neurological examination after 1 year
Time Frame: after 1 year
after 1 year
Peri-operative embolization
Time Frame: Peri-operative
A transcranial doppler ultrasonography will be performed.
Peri-operative
Validation results
Time Frame: pre- and post-operative after 48 hours and 3 weeks
MRI-scan will be used.
pre- and post-operative after 48 hours and 3 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University Ghent

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
University Hospital, Ghent

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Guy Vingerhoets, Ph.D., Professor, University Ghent
  • Principal Investigator: Frank Vermassen, Ph.D., M.D., University Hospital, Ghent

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
April 1, 2011

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
April 1, 2015

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
September 1, 2015

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
April 15, 2011

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 15, 2011

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
April 18, 2011

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
December 1, 2021

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 18, 2021

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2021

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 2010/819

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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