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Vascular Disease--Structure/Function

This study has been completed.
Sponsor:
Information provided by:
National Heart, Lung, and Blood Institute (NHLBI)
ClinicalTrials.gov Identifier:
NCT00005506
First received: May 25, 2000
Last updated: June 23, 2005
Last verified: April 2004
  Purpose

To investigate the relationship of non-invasively measured flow-mediated brachial artery dilation with coronary artery disease (CAD).


Condition
Cardiovascular Diseases
Heart Diseases
Coronary Disease

Study Type: Observational
Study Design: Observational Model: Natural History

Resource links provided by NLM:


Further study details as provided by National Heart, Lung, and Blood Institute (NHLBI):

Study Start Date: January 1998
Estimated Study Completion Date: June 2000
Detailed Description:

BACKGROUND:

This study meshed with a longitudinal case-control study, HL-35333, Carotid Atherosclerosis Follow-Up Study. HL-35333 comprised 280 individuals older than 45 equally divided between men and women, half with and half without CAD evaluated for risk factors at baseline and with completed follow-up with yearly B-mode for three years. The Carotid Atherosclerosis Follow-Up Study quantified the interassociations of angiographically defined coronary artery disease and CAD risk factors with progression. The NIH funded a continuation of this effort to review existing ultrasound tapes from this study in order to additionally evaluate the associations of all these factors with extracranial carotid arterial dimensions (ECAD: interadventitial and lumen diameters) and change in ECAD over time.

DESIGN NARRATIVE:

The study assessed brachial artery reactivity among 100 CAD subjects and 100 controls who had been previously enrolled in a study of the relationship between extracranial intima media thickness (ECIMT) as assessed by B mode ultrasonographic measurements and CAD status. Most subjects had three consecutive B mode measurements at 12 month intervals. These subjects had brachial artery reactivity measurements according to a standardized protocol. Linear regression analysis was used to relate brachial artery reactivity to CAD status, gender and risk factors as predictors. Interaction effects were also assessed between CAD status and other risk factors and also between gender and other risk factors. Similar analyses were performed to relate percent dilation to ECIMT measurements.

  Eligibility

Genders Eligible for Study:   Male
Accepts Healthy Volunteers:   No
Criteria

No eligibility criteria

  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00005506

Sponsors and Collaborators
Investigators
Investigator: John Crouse, III Wake Forest School of Medicine