Comparison of the Vasomotor Function and Myocardial Flow in Patients Treated With Bioresorbable and Metallic Stents at 1 Year (BVS-Flow)
Comparison of the Vasomotor Function and Myocardial Flow in Patients Treated
Background: A total of 25-50% of patients with stable coronary atherosclerosis treated with metallic stent implantation remain with effort angina despite optimal medical treatment and absence of stent restenosis at 1 year. The most plausible cause of persistent effort angina after stent implantation is microcirculatory dysfunction. Coronary circulation matches the myocardial blood supply and oxygen consumption. Metallic stent implantation has been related with endothelial dysfunction and impaired coronary blood flow reserve (relation between coronary blood flow at rest and maximal hyperemia) of the treated vessel at 1 year.
Bioresorbable Vascular Scaffold (BVS) has been shown to improve the endothelial function and to improve the angina symptoms at 1 year. However, the coronary blood flow of BVS has never been tested.
Main objective: To determine differences in the blood average peak velocity at maximal hyperemia with adenosine infusion between patients treated with bioresorbable and metallic coronary stents at 1 year after stent implantation.
Methodology: A total of 70 patients are 1:1 randomized to everolimus-eluting metallic stent (EES) versus everolimus-eluting BVS implantation in patients with stable coronary disease. At 1 year, patients undergo to invasive coronary angiography prior cessation of vasomotor drugs. A pressure/Doppler wire is advanced distally to the "treated segment" and the endothelial (acetylcholine) and non-endothelial (adenosine and nitroglycerine) vasomotor function is assessed with quantitative coronary angiography and pressure and Doppler measurements. Angina test questionnaires are obtained at different time-points of the study.
Expected results: A difference between patients treated with BVS and EES of 12.0 cm/sc in the maximal average peak velocity (APV) under maximal hyperemia (with adenosine administration) is expected, as assessed by Doppler measurements, at 1 year after stent implantation. The study is powered to assess superiority in terms of maximal APV favoring patients treated with BVS.
Visão geral do estudo
Status
Condições
Intervenção / Tratamento
Tipo de estudo
Inscrição (Real)
Estágio
- Fase 4
Contactos e Locais
Locais de estudo
-
-
-
Barcelona, Espanha, 08003
- Hospital Del Mar
-
Barcelona, Espanha, 08036
- Hospital Clinic
-
-
Barcelona
-
L´Hospitalet de Llobregat, Barcelona, Espanha, 08173
- Hospital Universitari de Bellvitge
-
-
Critérios de participação
Critérios de elegibilidade
Idades elegíveis para estudo
Aceita Voluntários Saudáveis
Gêneros Elegíveis para o Estudo
Descrição
Inclusion Criteria:
- Patients with stable angina or silent angina with myocardial ischemia detected by non-invasive tests or patients with acute coronary syndromes with no increase of > 5 times the upper value of normality of cardiac biomarkers (troponin).
- Patients with coronary artery disease with angiographic stenosis >
Plano de estudo
Como o estudo é projetado?
Detalhes do projeto
- Finalidade Principal: Outro
- Alocação: Randomizado
- Modelo Intervencional: Atribuição Paralela
- Mascaramento: Solteiro
Armas e Intervenções
Grupo de Participantes / Braço |
Intervenção / Tratamento |
|---|---|
|
Experimental: Bioresorbable vascular scaffold (BVS)
Patients with stable coronary angina with coronary artery disease suitable to be treated with a bioresorbable vascular scaffold.
|
Outros nomes:
|
|
Comparador Ativo: Everolimus-eluting stent (EES)
Patients with stable coronary angina with coronary artery disease suitable to be treated with a Everolimus-eluting stent .
|
O que o estudo está medindo?
Medidas de resultados primários
Medida de resultado |
Prazo |
|---|---|
|
Difference in the average peak velocity at maximal hyperemia between bioresorbable vascular scaffolds and everolimus-eluting stents as assessed by doppler wire measurement.
Prazo: 1-year after stent implantation
|
1-year after stent implantation
|
Medidas de resultados secundários
Medida de resultado |
Prazo |
|---|---|
|
Difference in endothelial dysfunction with acetyl-choline infusion between bioresorbable vascular scaffolds and everolimus-eluting stents as assessed by quantitative coronary angiography (4% of lumen reduction)
Prazo: 1-year after stent implantation
|
1-year after stent implantation
|
Outras medidas de resultado
Medida de resultado |
Prazo |
|---|---|
|
Difference in fractional flow reserve at maximal hyperemia between the two treatment groups as assessed by pressure-wire measurement
Prazo: 1-year after stent implantation
|
1-year after stent implantation
|
Colaboradores e Investigadores
Patrocinador
Colaboradores
Datas de registro do estudo
Datas Principais do Estudo
Início do estudo (Real)
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 (Real)
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
- 20151810
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 .