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Clinical Implications of Peripheral Plaque Morphology

NCT00578422 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 143

Last updated 2017-02-08

No results posted yet for this study

Summary

Peripheral Artery Disease involves a buildup of fatty deposits (plaque) within blood vessels that can restrict blood flow. Patients who have PAD and claudication (pain in legs during exercise due to poor blood circulation) may be eligible for this clinical trial. Three primary hypotheses will be tested in this study: (1) IVUS (Intravascular Ultrasound)combined with advanced digital image and signal processing provides a sensitive method to determine plaque geometry and composition in the human peripheral artery wall; (2) IVUS can discern specific arterial wall morphology, providing data that can be used to identify plaques that predispose the patient to late complications; and (3) IVUS-derived plaque structure can be used to predict responders and non-responders to pharmacologic therapy and percutaneous endovascular interventions. These hypotheses will be tested as follows: (1) custom engineered IVUS analysis software will be used to describe the geometry, composition, and spatial component relationships of the vessel, (2) the morphology of lower extremity arterial plaque, as determined by IVUS, will be correlated with baseline clinical characteristics of subjects, and (3) the effects on plaque morphology after long term treatment with antihyperlipidemics will be determined.

Conditions

Interventions

OTHER

Ivus (Intravascular Ultrasound) of Amputation Specimens

Human lower extremity arterial segments will be obtained at autopsy and from amputation specimens. All imaging studies and vessel fixation will be undertaken immediately upon vessel procurement; in most cases this will occur within 2 hours of dissection and within 24 hours of death. The ex vivo portion of the study will make use of 150 excised vessels obtained over a 48-month period from randomly selected autopsy cases. From these vessels we expect to collect data from a minimum of 560 plaques

PROCEDURE

IVUS (Intravascular Ultrasound)

Standard diagnostic arteriographic images will be obtained. Appropriate oblique views will be acquired at the common femoral bifurcation. Next, IVUS will be performed obtaining ultrasound data from a 10 cm lower extremity artery.

Sponsors & Collaborators

  • National Heart, Lung, and Blood Institute (NHLBI)

    collaborator NIH

  • The Cleveland Clinic

    lead OTHER

Principal Investigators

  • Matthew Eagleton, MD · The Cleveland Clinic

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2003-12-31
Primary Completion
2016-11-30
Completion
2016-11-30

Countries

  • United States

Study Locations

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT00578422 on ClinicalTrials.gov