NCT00214006

Brief Summary

First, to establish a comparison of the pathophysiology of carotid atherosclerosis and the genetic and environmental variables that cause those plaques to become symptomatic. Second, to differentiate between vulnerable plaque and other types of plaque using ultrasound elastography, MRI data, trans-cranial doppler along with RF (radio frequency) analysis of back-scattered ultrasonic echoes.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
162

participants targeted

Target at P50-P75 for all trials

Timeline
Completed

Started Nov 2001

Longer than P75 for all trials

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

November 1, 2001

Completed
3.9 years until next milestone

First Submitted

Initial submission to the registry

September 13, 2005

Completed
8 days until next milestone

First Posted

Study publicly available on registry

September 21, 2005

Completed
5.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

November 1, 2010

Completed
3 months until next milestone

Study Completion

Last participant's last visit for all outcomes

February 1, 2011

Completed
Last Updated

March 7, 2013

Status Verified

March 1, 2013

Enrollment Period

9 years

First QC Date

September 13, 2005

Last Update Submit

March 6, 2013

Conditions

Atherosclerosis

Outcome Measures

Primary Outcomes (1)

  • Lipid protein analysis and cognitive status comparison

    Comparison studies will be done using the lipid protein analysis and imaging studies. The primary comparison will be between those that are symptomatic and those that are asymptomatic. Secondary comparisons will be done using the lipid protein analysis and patient history. Comparison of cognitive status between groups will be made using analysis of covariance in which the difference in follow-up score between groups (symptomatic/asymptomatic) is adjusted for baseline score. The baseline adjusted standard error is 6.4, which with 36 subjects per group will yield 90% power to detect a difference between groups of approximately 4.9 points at a significant level of 5%. We need 36 subjects per group to achieve the power stated. We have built in another 15% for projected dropout to insure we meet the final target.

    2008-2011

Eligibility Criteria

Age18 Years - 80 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

Patients undergoing carotid endarectomy

You may qualify if:

  • Male and Female patients aged 18-80 presenting for carotid endarterectomy

You may not qualify if:

  • Patients not felt suitable for carotid endarterectomy and those with impaired decision-making capacity

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Wisconsin

Madison, Wisconsin, 53792, United States

Location

MeSH Terms

Conditions

Atherosclerosis

Condition Hierarchy (Ancestors)

ArteriosclerosisArterial Occlusive DiseasesVascular DiseasesCardiovascular Diseases

Study Officials

  • Robert J. Dempsey, MD

    University of Wisconsin, Madison

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
observational
Observational Model
CASE ONLY
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

September 13, 2005

First Posted

September 21, 2005

Study Start

November 1, 2001

Primary Completion

November 1, 2010

Study Completion

February 1, 2011

Last Updated

March 7, 2013

Record last verified: 2013-03

Locations

US(1)