Optimal Physiologic Intravascular Ultrasound Imaging Criteria After Drug Eluting Stent Implantation

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01667757
Recruitment Status : Completed
First Posted : August 17, 2012
Last Update Posted : March 24, 2015
Seoul National University Hospital
Information provided by (Responsible Party):
Joon Hyung Doh, Inje University

Brief Summary:
Invasive imaging criteria of the Coronary arteriography (CAG) and intravascular ultrasound imaging (IVUS), satisfying procedural optimization after drug eluting stent (DES) implantation, were used in < 10% DS by CAG and 5-5.5mm2 MSA by IVUS. Whether these criteria satisfy not only relieving visible stenosis but also relieving lesion specific ischemia or not were unclear. Fractional flow reserve (FFR), an index of lesion specific ischemia, was proposed 0.9 as a physiologic criteria satisfying successful stent implantation by previous studies with bare metal stent. FFR after drug-eluting stent implantation can be an useful predictor for clinical outcome. But, direct comparative evaluation of the invasive imaging criteria defining as an indicator relieving myocardial ischemia were not reported. The aim of this study was to investigate angiographic and IVUS parameters in which corresponding FFR and evaluate their optimal physiologic criteria after DES implantation.

Condition or disease
Coronary Disease

Study Type : Observational
Actual Enrollment : 200 participants
Observational Model: Case-Only
Time Perspective: Cross-Sectional
Official Title: Angiographic and IVUS Criteria Defining Physiologic Optimization By the Fractional Flow Reserve After DES Implantation
Study Start Date : March 2010
Actual Primary Completion Date : December 2013
Actual Study Completion Date : December 2014

low post DES FFR group (<0.9)
the patient with FFR values less than 0.9 after DES procedure
high post DES FFR group (≥0.9)
the patient with FFR values greater than 0.9 after DES procedure

Primary Outcome Measures :
  1. Differences angiographic and IVUS parameters after DES between different FFR groups [ Time Frame: baseline ]
    Angiographic residual percent diameter stenosis (%), minimal stent lumen diameter (mm) and total stent length (mm), and IVUS minimal stent cross-sectional area (mm2) and minimal stent lumen diameter (mm) will be compared according to different FFR groups at the time of measurement after DES implantation.

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Ages Eligible for Study:   20 Years to 85 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Probability Sample
Study Population
Patients who underwent coronary angiography and percutaneous coronary intervention for the diagnosis and treatment purposes because of clinical angina pectoris. Patient who underwent simultaneous IVUS and FFR measurement after DES implantation would be enrolled consecutively.

Inclusion Criteria:

  • clinical angina pectoris who underwent IVUS and FFR during coronary angiography and after DES implantation.
  • agree with informed consent
  • At least one segment of three major epicardial coronary arteries were consecutively enrolled in invasive CAG.
  • Post- stent FFR and IVUS measurement performed at the immediately after whole PCI procedures.

Exclusion Criteria:

  • unable to get informed consent
  • low left ventricular ejection fraction less than 35%
  • chronic renal failure (Cr > 2.0mg/dl)
  • acute myocardial infarction related coronary artery
  • allergy to adenosine injection

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01667757

Korea, Republic of
Inje University Ilsan Paik Hospital
Goyang, Gyeonggido, Korea, Republic of, 411-709
Sponsors and Collaborators
Inje University
Seoul National University Hospital
Principal Investigator: Joon Hyung Doh, MDPhD Inje University

Responsible Party: Joon Hyung Doh, MD, PHD, Inje University Identifier: NCT01667757     History of Changes
Other Study ID Numbers: IB-2-1208-026
First Posted: August 17, 2012    Key Record Dates
Last Update Posted: March 24, 2015
Last Verified: March 2015

Keywords provided by Joon Hyung Doh, Inje University:
coronary atherosclerosis
drug eluting stent
intravascular ultrasound
fractional flow reserve

Additional relevant MeSH terms:
Coronary Disease
Coronary Artery Disease
Myocardial Ischemia
Heart Diseases
Cardiovascular Diseases
Vascular Diseases
Arterial Occlusive Diseases