Intra-stent Tissue Evaluation Within BMS and DES > 3 Years Since Implantation

August 8, 2014 updated by: Medstar Health Research Institute
This study aims to test the hypothesis that plaque composition differs within a stent between bare metal stents and drug eluting stents (DES). It is possible that a difference in plaque composition seen within a stent may be contributory to the late thrombotic events seen more frequently with DES.

Study Overview

Status

Unknown

Conditions

Study Type

Observational

Enrollment (Anticipated)

40

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

  • United States
    • District of Columbia
      • Washington, District of Columbia, United States, 20010
        • Medstar Washington Hospital Center

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

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

A total of 40 subjects will be enrolled in the study, with 20 patients who previously received BMS > 3 years ago and 20 patients who previously received DES > 3 years ago

Description

Inclusion Criteria:

  • Subject > 18 years of age;
  • Subject, male or female, who underwent DES or BMS implantation in a native coronary vessel more than 3 year ago;
  • Subject is scheduled for a diagnostic coronary or interventional procedure;
  • Subject is willing to sign the informed consent.

Exclusion Criteria:

  • Subject requires emergency catheterization;
  • Subject has an acute myocardial infarction defined as anginal symptoms with ST-elevation on the EKG or creatine kinase-MB elevation >3times the upper limit of normal;
  • Angiographic evidence of ≥ 70% stenosis within the target stent (visual estimate);
  • Subject presented with cardiogenic shock;
  • Subject has angiographically confirmed thrombus in the target coronary artery;
  • Subject has a complex lesion not amenable to the IVUS/VH catheters and/or OCT catheters passing the stented segment;
  • Subject has a contraindication to angiography/IVUS/OCT;
  • Female subject is pregnant or lactating;
  • Subject has life threatening comorbid conditions for which the investigator feels the subject should not be enrolled

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

Cohorts and Interventions

Group / Cohort
DES
Patients who received a DES stent > 3 years ago.
BMS
Patients who received BMS stents > 3 years ago.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Plaque composition
Time Frame: During hospital stay, about 2 days.
This study aims to test the hypothesis that plaque composition differs within the stent between BMS and DES. It is possible that a difference in plaque composition seen within the stent may be contributory to the late thrombotic events seen more frequently with DES.
During hospital stay, about 2 days.

Collaborators and Investigators

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

Sponsor

Medstar Health Research Institute

Investigators

  • Principal Investigator: Ron Waksman, MD, Medstar Washington Hospital Center

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

November 1, 2011

Primary Completion (Anticipated)

December 1, 2015

Study Registration Dates

First Submitted

April 12, 2013

First Submitted That Met QC Criteria

April 16, 2013

First Posted (Estimate)

April 18, 2013

Study Record Updates

Last Update Posted (Estimate)

August 11, 2014

Last Update Submitted That Met QC Criteria

August 8, 2014

Last Verified

August 1, 2014

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • IntraStent

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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