Fractional Flow Reserve and Intravascular Ultrasound RelationShip STudy (FIRST)
27 februari 2015 uppdaterad av: Volcano Corporation
Fractional Flow Reserve and Intravascular Ultrasound RelationShip STudy: The FIRST Study
This is a multi-center, prospective registry of patients with intermediate coronary lesions defined as a stenosis of 40-80% by angiography.
Approximately 300 patients will be enrolled into the study at sites in the United States and Europe.
There will be no follow up beyond hospital discharge in this study.
A sub-group of 30 patients will undergo Adenosine MRI.
The investigators hypothesize that Intravascular Ultrasound Radiofrequency (IVUS RF) anatomical criteria, such as minimal luminal area, plaque burden and virtual histology plaque type, can predict physiological ischemia by Fractional Flow Reserve (FFR).
Studieöversikt
Status
Avslutad
Betingelser
Detaljerad beskrivning
Patients undergoing cardiac catheterization must meet clinical inclusion and exclusion criteria and sign an informed consent.
At the time of catheterization the patients will be further analyzed for eligibility using angiographic inclusion and exclusion criteria.
Patients who fulfilled the clinical and angiographic criteria will undergo further imaging evaluation using an IVUS RF catheter (Volcano Therapeutics) and FFR wire (Radi or Volcano).
The decision for treatment of any lesion will be at the operator's discretion.
For patients enrolled at Washington Hospital Center and do not undergo percutaneous coronary intervention, an assessment with non invasive perfusion adenosine MRI also be performed.
Studietyp
Observationell
Inskrivning (Faktisk)
350
Kontakter och platser
Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.
Studieorter
-
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District of Columbia
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Washington, District of Columbia, Förenta staterna, 20010
- Washingtoon Hospital Center
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Deltagandekriterier
Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.
Urvalskriterier
Åldrar som är berättigade till studier
18 år till 75 år (Vuxen, Äldre vuxen)
Tar emot friska volontärer
Nej
Kön som är behöriga för studier
Allt
Testmetod
Icke-sannolikhetsprov
Studera befolkning
Patients required to have an intermediate coronary lesion (stenosis 40-80% by visual estimate) in one or more native, major epicardial coronary artery with reference diameter ≥2.5mm (visual estimate)
Beskrivning
Inclusion Criteria:
- Sign written informed consent to participate in the study.
- Clinical indication for coronary angiography for stable or unstable angina
Specific Angiographic Inclusion Criteria:
- Patients required to have an intermediate coronary lesion (stenosis 40-80% by visual estimate) in one or more native, major epicardial coronary artery with reference diameter ≥2.5mm (visual estimate)
- The vessel(s) with the intermediate lesion must have no flow limiting lesions and must be available for imaging and must be considered safe for imaging evaluation.
Exclusion Criteria:
- Patient has had a documented acute ST-segment elevation myocardial infarction within the past 24 hours
- Decompensated heart failure or hypotension requiring intubation, inotropes, intravenous diuretics or intraaortic balloon counterpulsation.
- Renal dysfunction (creatinine clearance < 60 mL/min/1.73m2)
- Pregnancy or breast-feeding
- Standard contra-indications to MRI for implanted ferro-magnetic devices - i.e.: pacemakers, defibrillator (AICD), and aneurysm clips
- Body weight > 400lbs
- Left ventricular hypertrophy >1.5cm by by echocardiogram
- History of bronchospasm or asthma
- ECG evidence of conduction defect, including 2nd or 3rd degree AVB
- Patient has a known hypersensitivity, allergy or contraindication to gadolinium-based contrast agents.
- Prior participation in this study or patient is currently enrolled in another investigational use device or drug study that has not reached its primary endpoint. If the patient is enrolled in another study that is not investigational, required visits for that trial must not interfere with the conduct of this trial.
Angiographic Exclusion Criteria:
- Unprotected left main lesion location.
- Ostial lesion
- Angiographic evidence of severe calcification or marked tortuosity of the target vessel that would preclude safe imaging
- Lesion is located within or distal to an arterial or saphenous vein graft.
- Angiographic presence of thrombus in the lesion or vessel studied.
- Lesion in a vessel with <2.5 mm reference diameter or with more than one lesion in the vessel
Studieplan
Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.
Hur är studien utformad?
Designdetaljer
Kohorter och interventioner
Grupp / Kohort |
|---|
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Intermediate coronary lesions
Diagnostic device: FFR Diagnostic device: IVUS RF At participating centers, FFR and IVUS are standard of care diagnostic procedures for patients with intermediate (40-80% angiographic stenosis by visual estimate). Both modalities were used regularly for such patients whether or not they are participants in this clinical study. In FIRST, the decision to perform percutaneous coronary intervention (PCI) was left to the discretion of the investigator, and was not dictated by the clinical protocol. |
Vad mäter studien?
Primära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
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Correlation between (Minimum Luminal Area) MLA and FFR
Tidsram: Day of Procedure
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The correlation between MLA and FFR; and the threshold value for MLA corresponding to an FFR < 0.8.
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Day of Procedure
|
Sekundära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
|
Correlation between FFR and IVUS and VH parameters
Tidsram: Day of Procedure
|
Correlation between FFR and various IVUS measurements (MLA,area stenosis, lesion length, plaque burden) and VH parameters (plaque type and presence of a TCFA)
|
Day of Procedure
|
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Association of FFR and Cut-off of MLA
Tidsram: Day of Procedure
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Assess the association between FFR <0.75 and 0.8 and determined cut-off of MLA with presence of a Thin Cap Fibro-Atheroma(TCFA) and/or plaque burden ≥70%
|
Day of Procedure
|
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Identify risk score model
Tidsram: 1 year
|
To identify a risk score model taking into account IVUS measurements (MLA, plaque burden, area stenosis, lesion length) and VH parameters (plaque type and presence of TCFA) associated with FFR < 0.8
|
1 year
|
Samarbetspartners och utredare
Det är här du hittar personer och organisationer som är involverade i denna studie.
Sponsor
Utredare
- Huvudutredare: Ron Waksman, MD, Medstar Health Research Institute
Publikationer och användbara länkar
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Studieavstämningsdatum
Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.
Studera stora datum
Studiestart
1 september 2010
Primärt slutförande (Faktisk)
1 juni 2012
Avslutad studie (Faktisk)
1 juni 2012
Studieregistreringsdatum
Först inskickad
28 juni 2010
Först inskickad som uppfyllde QC-kriterierna
29 juni 2010
Första postat (Uppskatta)
30 juni 2010
Uppdateringar av studier
Senaste uppdatering publicerad (Uppskatta)
4 mars 2015
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
27 februari 2015
Senast verifierad
1 januari 2015
Mer information
Termer relaterade till denna studie
Ytterligare relevanta MeSH-villkor
Andra studie-ID-nummer
- FIRST
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