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- Registro de ensayos clínicos de EE. UU.
- Ensayo clínico NCT02096419
Continuous Clopidogrel Dose Adjustment in Acute Coronary Syndrome Patients With High On-treatment Platelet Reactivity
Effect of Continuous Clopidogrel Dosing Targeted After Platelet Function Testing in Acute Coronary Syndrome Patients Undergoing Percutaneous Coronary Intervention With High On-treatment Platelet Reactivity
Descripción general del estudio
Estado
Condiciones
Intervención / Tratamiento
Descripción detallada
Dual antiplatelet therapy (DAPT) with aspirin and P2Y12 receptor antagonists during 12 months presents cornerstone treatment in acute coronary syndrome (ACS) patients undergoing percutaneous coronary intervention (PCI). Clopidogrel is the most widely used P2Y12 inhibitor despite it's limitations that include highly variable P2Y12-receptor inhibition which causes wide interindividual platelet reactivity variability. Since high on-treatment platelet reactivity (HTPR) on clopidogrel is strongly associated with adverse events, antiplatelet therapy tailoring has been vastly investigated to determine whether individualized approach could improve outcomes. In the time of progressive personalized approach to therapy, effective strategies are needed to minimize the risk of ischemic adverse events without increasing the risk for bleeding.
Aim of this study is to investigate whether continuous clopidogrel dose adjustment according to platelet function testing (PFT) using Multiplate® function analyzer (Roche Diagnostics, Mannheim, Germany) could decrease the rate of adverse events in ACS patients treated with PCI and with HTPR during early and late period of DAPT treatment.
Cut off values for HTPR and enhanced platelet response were set according to the consensus statement at >46 U and <19 U, respectively. PFT and therapy tailoring was performed at day 1, 2, 3, 7, 30 and month 2, 3, 6, 9 and 12.
Tipo de estudio
Inscripción (Actual)
Fase
- Fase 4
Contactos y Ubicaciones
Ubicaciones de estudio
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Zagreb, Croacia, 10000
- University Hospital Centre Zagreb
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Criterios de participación
Criterio de elegibilidad
Edades elegibles para estudiar
Acepta Voluntarios Saludables
Géneros elegibles para el estudio
Descripción
Inclusion Criteria:
- acute coronary syndrome patients treated with successful PCI
- age 18-80 years
- determined high on-treatment platelet reactivity
Exclusion Criteria:
- continuous postinterventional glycoprotein (GP) IIbIIIa receptor inhibitor infusion
- thrombocytopenia (<150x109/L)
- significant renal insufficiency (creatinine>200 µmol/L)
- anemia (Htc<30%)
- hemorrhagic diathesis
- history of intracranial bleeding or ischemic cerebrovascular insult 6 months before
- major operation 6 weeks before
- concomitant chronic anticoagulation therapy
- age <18 years and >80 years
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Tratamiento
- Asignación: Aleatorizado
- Modelo Intervencionista: Asignación paralela
- Enmascaramiento: Ninguno (etiqueta abierta)
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
|---|---|
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Sin intervención: control group
Patients in this group will receive standard clopidogrel dose
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Experimental: interventional group
Patients in the interventional arm will receive clopidogrel dose adjustment to maintain optimal platelet reactivity determined by Multiplate function analyzer (19-46U). They will undergo platelet function testing on day 1,2,3,7,30 and month 2,3,6,9 and 12. On first two measurements patients will receive up to 2 additional clopidogrel loading doses (600 mg) and put on 150 mg and 75 mg a day if platelet reactivity >18U and <18U, respectively. Maintenance dose will be determined on following measurements - increased by 75 mg if >46U; not changed if 19-46U; decreased by 75 mg if <19U. Minimal dose - 75 mg; maximal dose 300 mg (for patients >70 years 150 mg) |
Patients in the interventional arm will receive clopidogrel dose adjustment to maintain optimal platelet reactivity determined by Multiplate function analyzer (19-46U). They will undergo platelet function testing on day 1,2,3,7,30 and month 2,3,6,9 and 12. On first two measurements patients will receive up to 2 additional clopidogrel loading doses (600 mg) and put on 150 mg and 75 mg a day if platelet reactivity >18U and <18U, respectively. Maintenance dose will be determined on following measurements - increased by 75 mg if >46U; not changed if 19-46U; decreased by 75 mg if <19U. Minimal dose - 75 mg; maximal dose 300 mg (for patients >70 years 150 mg)
Otros nombres:
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¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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clinical outcome - composite endpoint of total cardiovascular death, non-fatal myocardial infarction, target vessel revascularization and ischemic stroke
Periodo de tiempo: 12 months
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Data will be collected during the entire follow up period on interviews and analyzing patient medical data.
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12 months
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Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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number of bleeding events
Periodo de tiempo: 12 months
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BARC classification (Bleeding Academic Research Consortium)
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12 months
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Colaboradores e Investigadores
Patrocinador
Colaboradores
Investigadores
- Silla de estudio: Davor Milicic, MD, PhD, University of Zagreb School of Medicine
- Investigador principal: Jure Samardzic, MD, University of Zagreb School of Medicine
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio
Finalización primaria (Actual)
Finalización del estudio (Actual)
Fechas de registro del estudio
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Estimar)
Actualizaciones de registros de estudio
Última actualización publicada (Estimar)
Última actualización enviada que cumplió con los criterios de control de calidad
Última verificación
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
- Procesos Patológicos
- Isquemia miocardica
- Enfermedades cardíacas
- Enfermedades cardiovasculares
- Enfermedades Vasculares
- Enfermedad
- Síndrome
- El síndrome coronario agudo
- Efectos fisiológicos de las drogas
- Agentes neurotransmisores
- Mecanismos moleculares de acción farmacológica
- Inhibidores de la agregación plaquetaria
- Antagonistas del receptor P2Y purinérgico
- Antagonistas del receptor P2 purinérgico
- Antagonistas purinérgicos
- Agentes Purinérgicos
- Clopidogrel
Otros números de identificación del estudio
- 108-1081875-1993-1
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