Fractional Flow Reserve and Intravascular Ultrasound RelationShip STudy (FIRST)
Fractional Flow Reserve and Intravascular Ultrasound RelationShip STudy: The FIRST Study
調査の概要
状態
条件
詳細な説明
研究の種類
入学 (実際)
連絡先と場所
研究場所
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District of Columbia
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Washington、District of Columbia、アメリカ、20010
- Washingtoon Hospital Center
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参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
サンプリング方法
調査対象母集団
説明
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
研究計画
研究はどのように設計されていますか?
デザインの詳細
コホートと介入
グループ/コホート |
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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. |
この研究は何を測定していますか?
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Correlation between (Minimum Luminal Area) MLA and FFR
時間枠: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
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二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Correlation between FFR and IVUS and VH parameters
時間枠:Day of Procedure
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Correlation between FFR and various IVUS measurements (MLA,area stenosis, lesion length, plaque burden) and VH parameters (plaque type and presence of a TCFA)
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Day of Procedure
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Association of FFR and Cut-off of MLA
時間枠: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%
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Day of Procedure
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Identify risk score model
時間枠:1 year
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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
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1 year
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協力者と研究者
スポンサー
捜査官
- 主任研究者:Ron Waksman, MD、Medstar Health Research Institute
出版物と役立つリンク
研究記録日
主要日程の研究
研究開始
一次修了 (実際)
研究の完了 (実際)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (見積もり)
学習記録の更新
投稿された最後の更新 (見積もり)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。