- ICH GCP
- Registro de ensaios clínicos dos EUA
- Ensaio Clínico NCT01153555
Fractional Flow Reserve and Intravascular Ultrasound RelationShip STudy (FIRST)
Fractional Flow Reserve and Intravascular Ultrasound RelationShip STudy: The FIRST Study
Visão geral do estudo
Status
Condições
Descrição detalhada
Tipo de estudo
Inscrição (Real)
Contactos e Locais
Locais de estudo
-
-
District of Columbia
-
Washington, District of Columbia, Estados Unidos, 20010
- Washingtoon Hospital Center
-
-
Critérios de participação
Critérios de elegibilidade
Idades elegíveis para estudo
Aceita Voluntários Saudáveis
Gêneros Elegíveis para o Estudo
Método de amostragem
População do estudo
Descrição
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
Plano de estudo
Como o estudo é projetado?
Detalhes do projeto
Coortes e Intervenções
Grupo / Coorte |
|---|
|
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. |
O que o estudo está medindo?
Medidas de resultados primários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
|
Correlation between (Minimum Luminal Area) MLA and FFR
Prazo: Day of Procedure
|
The correlation between MLA and FFR; and the threshold value for MLA corresponding to an FFR < 0.8.
|
Day of Procedure
|
Medidas de resultados secundários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
|
Correlation between FFR and IVUS and VH parameters
Prazo: 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
|
|
Association of FFR and Cut-off of MLA
Prazo: Day of Procedure
|
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
|
|
Identify risk score model
Prazo: 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
|
Colaboradores e Investigadores
Patrocinador
Investigadores
- Investigador principal: Ron Waksman, MD, Medstar Health Research Institute
Publicações e links úteis
Datas de registro do estudo
Datas Principais do Estudo
Início do estudo
Conclusão Primária (Real)
Conclusão do estudo (Real)
Datas de inscrição no estudo
Enviado pela primeira vez
Enviado pela primeira vez que atendeu aos critérios de CQ
Primeira postagem (Estimativa)
Atualizações de registro de estudo
Última Atualização Postada (Estimativa)
Última atualização enviada que atendeu aos critérios de controle de qualidade
Última verificação
Mais Informações
Termos relacionados a este estudo
Termos MeSH relevantes adicionais
Outros números de identificação do estudo
- FIRST
Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .