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- Klinische proef NCT02388399
Invasive Measurement of Axial Plaque Stress, the Pilot Study (REASSURE)
Relevance of Invasively Measured Axial Plaque Stress and Wall Shear Stress Using Invasive Coronary Imaging and Hemodynamic Data
In this study, the investigators sought to evaluate the feasibility of estimating external hemodynamic stress acting plaque with the use of invasively measured hemodynamic data from pressure wire pullback tracing.
In addition, the investigators will also evaluate detailed plaque geometry and vulnerability using optical coherence tomography along with the hemodynamic stress.
Studie Overzicht
Toestand
Conditie
Interventie / Behandeling
Gedetailleerde beschrijving
It has been well known that mechanism of acute coronary syndrome is plaque rupture and occlusion of coronary artery by this plaque rupture. Although current risk assessment for plaque rupture have mainly focused on evaluation of plaque vulnerability. However, according to the general mechanism of material failure, plaque rupture occurs whenever the external hemodynamic stress exceeds the durability of the plaque.
Recently, we evaluated the axial plaque stress, which is axial component of total traction acting on the plaque, and showed that the axial plaque stress possess significantly higher magnitude than previously known wall shear stress.
However, the axial plaque stress in our previous research was measured with computational flow dynamics analysis using coronary artery model from coronary CT angiography.
In this study, we sought to evaluate the feasibility of estimating external hemodynamic stress acting plaque with the use of invasively measured hemodynamic data from pressure wire pullback tracing.
In addition, we will also evaluate detailed plaque geometry and vulnerability using optical coherence tomography along with the hemodynamic stress.
Studietype
Inschrijving (Verwacht)
Contacten en locaties
Studie Locaties
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Daegu, Korea, republiek van
- Keimyung University Dongsan Medical Center
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Goyang, Korea, republiek van
- Inje University Ilsan Paik Hospital
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Seoul, Korea, republiek van
- Seoul National University Hospital
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Ulsan, Korea, republiek van
- Ulsan University Hospital, University of Ulsan College of Medicine
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Bemonsteringsmethode
Studie Bevolking
Beschrijving
Inclusion Criteria:
- 1. Patients with angina pectoris who are scheduled to do invasive coronary angiography.
- 2. Patients who have moderate (40-70%) stenosis at proximal or mid-portion of major coronary arteries.
- 3. Pressure wire pullback tracing and Optical Coherence Tomography ware successfully performed
Exclusion Criteria:
- 1. Stenosis at distal coronary or small vessel.
- 2. Patients who don't have moderate (40-70%) stenosis at proximal or mid-portion of major coronary arteries. Confirmed by invasive coronary angiography.
- 3. Inadequate quality of Optical Coherence Tomography
- 4. No data of Fractional Flow Reserve or Pressure wire pullback tracing or inadequate data of Fractional Flow Reserve or Pressure wire pullback tracing
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
Cohorten en interventies
Groep / Cohort |
Interventie / Behandeling |
---|---|
OCT and Pressure wire pullback tracing
This study is pilot study evaluating the feasibility of invasive measurement and estimation of hemodynamic stress acting on plaque as well as co-registration of hemodynamic data with plaque geometric data, which is obtained by optical coherence tomography
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Optical coherence tomography to evaluate plaque morphology and vulnerable features (ex> cap thickness, spotty calcification)
Andere namen:
Resting and hyperemic pressure pullback tracing will be done with motorized pullback system.
Andere namen:
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Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
---|---|---|
Axial plaque stress (Axial component of total traction acting on the plaque)
Tijdsspanne: up to 1 week
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up to 1 week
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Cap thickness (measured from optical coherent tomography)
Tijdsspanne: up to 1 week
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Cap thickness measured from optical coherent tomography
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up to 1 week
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Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
---|---|---|
Wall shear stress (Friction vector on the surface of the plaque)
Tijdsspanne: up to 1 week
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Friction vector on the surface of the plaque
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up to 1 week
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Proportion of thin cap fibrous atheroma
Tijdsspanne: up to 1 week
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Plaques with cap thickness < 60um
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up to 1 week
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Cardiac death and all-cause mortality
Tijdsspanne: 1 year
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Between High-hemodynamic force plaque and Low-hemodynamic force plaque
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1 year
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Non-fatal target vessel myocardial infarction
Tijdsspanne: 1 year
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Between High-hemodynamic force plaque and Low-hemodynamic force plaque
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1 year
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Target vessel restenosis
Tijdsspanne: 1 year
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Between High-hemodynamic force plaque and Low-hemodynamic force plaque
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1 year
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Medewerkers en onderzoekers
Studie record data
Bestudeer belangrijke data
Studie start
Primaire voltooiing (Verwacht)
Studie voltooiing (Verwacht)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Schatting)
Updates van studierecords
Laatste update geplaatst (Schatting)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- NCT723631
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