- ICH GCP
- Registro de ensayos clínicos de EE. UU.
- Ensayo clínico NCT00987259
Myocardial Oedema in Acute Myocardial Infarction (AMI)
Determination of the Time Course of Myocardial Oedema Post Myocardial Infarction Treated With Primary Angioplasty Using Cardiac Magnetic Resonance Imaging
Despite recent improvements in treatment, myocardial infarction (heart attack) is still a leading cause of illness and death in the UK. Following the acute event, it is difficult to predict which patients are at risk of further problems, such as heart failure and is therefore difficult to know which patients need more aggressive/intensive treatment and monitoring.
There needs to be a test which is safe, reliable and reproducible that can be used shortly after a heart attack to both predict future cardiac events and to allow the efficacy of new treatments to be assessed.
Myocardial oedema (swelling of the heart muscle) has been demonstrated using Cardiac Magnetic Resonance (CMR), to occur following a heart attack and has been suggested as a marker for future cardiac events. The optimum time to perform this scan, the method of data analysis and it's effectiveness as a predictor of future cardiac events has not been adequately assessed.
This trial will assess the amount and natural time-course of oedema in the first 10 days following a heart attack. It will also correlate the amount of oedema with the size of scar (damaged heart muscle) and left ventricular ejection fraction (heart function) at 3 months to assess if it is a predictive marker.
Descripción general del estudio
Estado
Condiciones
Tipo de estudio
Inscripción (Actual)
Contactos y Ubicaciones
Ubicaciones de estudio
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Greater London
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London, Greater London, Reino Unido, E2 9JX
- The London Chest Hospital
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Criterios de participación
Criterio de elegibilidad
Edades elegibles para estudiar
Acepta Voluntarios Saludables
Géneros elegibles para el estudio
Método de muestreo
Población de estudio
Descripción
Inclusion Criteria:
- Patients presenting to the London Chest Hospital with acute ST elevation myocardial infarction and treated with primary angioplasty and stent implantation within 12 hours of symptom onset
- Acute PCI / stent implantation has been successful (residual stenosis visually < 30% and TIMI flow ≥ 2)
- At the time of inclusion, the patient no longer requires intravenous catecholamines or mechanical hemodynamic support (aortic balloon pump)
- Serum troponin >1ng/ml 12 hours after onset of pain
- The patient is able to give written informed consent
- The patient must be able to understand and communicate in English
Exclusion Criteria:
- Known cardiomyopathy
- Previous documented myocardial infarction
- Previous percutaneous coronary intervention or coronary artery bypass surgery
- Significant renal dysfunction (EGFR<30)
- Systemic steroid therapy
- Current non steroidal anti-inflammatory drug use
- Chronic inflammatory disease
- Neoplastic disease without documented remission within the past 5 years
- Pregnancy
- Reduced mental capacity leading to inability to obtain informed consent
- Participation in another clinical trial within the last 30 days
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
Cohortes e Intervenciones
Grupo / Cohorte |
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Post MI patients
Patients recruited following a successfully reperfused myocardial infarction using primary angioplasty.
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¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Periodo de tiempo |
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Extent and time course of myocardial oedema over the first 10 days post MI
Periodo de tiempo: Days 1, 3 and 10 post MI
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Days 1, 3 and 10 post MI
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Medidas de resultado secundarias
Medida de resultado |
Periodo de tiempo |
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Left ventricular ejection fraction and left ventricular scar size at 3 months
Periodo de tiempo: 90 days post MI
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90 days post MI
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Colaboradores e Investigadores
Patrocinador
Investigadores
- Investigador principal: Thomas R Burchell, BSc, MB BS, Bart's and The London NHS Trust, United Kingdom
Publicaciones y enlaces útiles
Publicaciones Generales
- Schulz-Menger J, Gross M, Messroghli D, Uhlich F, Dietz R, Friedrich MG. Cardiovascular magnetic resonance of acute myocardial infarction at a very early stage. J Am Coll Cardiol. 2003 Aug 6;42(3):513-8. doi: 10.1016/s0735-1097(03)00717-4.
- Abdel-Aty H, Boye P, Zagrosek A, Wassmuth R, Kumar A, Messroghli D, Bock P, Dietz R, Friedrich MG, Schulz-Menger J. Diagnostic performance of cardiovascular magnetic resonance in patients with suspected acute myocarditis: comparison of different approaches. J Am Coll Cardiol. 2005 Jun 7;45(11):1815-22. doi: 10.1016/j.jacc.2004.11.069.
- Higgins CB, Herfkens R, Lipton MJ, Sievers R, Sheldon P, Kaufman L, Crooks LE. Nuclear magnetic resonance imaging of acute myocardial infarction in dogs: alterations in magnetic relaxation times. Am J Cardiol. 1983 Jul;52(1):184-8. doi: 10.1016/0002-9149(83)90093-0.
- Laine GA, Granger HJ. Microvascular, interstitial, and lymphatic interactions in normal heart. Am J Physiol. 1985 Oct;249(4 Pt 2):H834-42. doi: 10.1152/ajpheart.1985.249.4.H834.
- Nilsson JC, Nielsen G, Groenning BA, Fritz-Hansen T, Sondergaard L, Jensen GB, Larsson HB. Sustained postinfarction myocardial oedema in humans visualised by magnetic resonance imaging. Heart. 2001 Jun;85(6):639-42. doi: 10.1136/heart.85.6.639.
- Garcia-Dorado D, Oliveras J, Gili J, Sanz E, Perez-Villa F, Barrabes J, Carreras MJ, Solares J, Soler-Soler J. Analysis of myocardial oedema by magnetic resonance imaging early after coronary artery occlusion with or without reperfusion. Cardiovasc Res. 1993 Aug;27(8):1462-9. doi: 10.1093/cvr/27.8.1462. Erratum In: Cardiovasc Res 1993 Oct;27(10):1889.
- Bragadeesh T, Jayaweera AR, Pascotto M, Micari A, Le DE, Kramer CM, Epstein FH, Kaul S. Post-ischaemic myocardial dysfunction (stunning) results from myofibrillar oedema. Heart. 2008 Feb;94(2):166-71. doi: 10.1136/hrt.2006.102434. Epub 2007 Jul 16.
- Arai AE. Using magnetic resonance imaging to characterize recent myocardial injury: utility in acute coronary syndrome and other clinical scenarios. Circulation. 2008 Aug 19;118(8):795-6. doi: 10.1161/CIRCULATIONAHA.108.797373. No abstract available.
- Klem I, Kim RJ. Assessment of microvascular injury after acute myocardial infarction: importance of the area at risk. Nat Clin Pract Cardiovasc Med. 2008 Dec;5(12):756-7. doi: 10.1038/ncpcardio1373. Epub 2008 Oct 14.
- Tilak GS, Hsu LY, Hoyt RF Jr, Arai AE, Aletras AH. In vivo T2-weighted magnetic resonance imaging can accurately determine the ischemic area at risk for 2-day-old nonreperfused myocardial infarction. Invest Radiol. 2008 Jan;43(1):7-15. doi: 10.1097/RLI.0b013e3181558822.
- Aletras AH, Tilak GS, Natanzon A, Hsu LY, Gonzalez FM, Hoyt RF Jr, Arai AE. Retrospective determination of the area at risk for reperfused acute myocardial infarction with T2-weighted cardiac magnetic resonance imaging: histopathological and displacement encoding with stimulated echoes (DENSE) functional validations. Circulation. 2006 Apr 18;113(15):1865-70. doi: 10.1161/CIRCULATIONAHA.105.576025. Epub 2006 Apr 10.
- Friedrich MG, Abdel-Aty H, Taylor A, Schulz-Menger J, Messroghli D, Dietz R. The salvaged area at risk in reperfused acute myocardial infarction as visualized by cardiovascular magnetic resonance. J Am Coll Cardiol. 2008 Apr 22;51(16):1581-7. doi: 10.1016/j.jacc.2008.01.019.
- Ripa RS, Nilsson JC, Wang Y, Sondergaard L, Jorgensen E, Kastrup J. Short- and long-term changes in myocardial function, morphology, edema, and infarct mass after ST-segment elevation myocardial infarction evaluated by serial magnetic resonance imaging. Am Heart J. 2007 Nov;154(5):929-36. doi: 10.1016/j.ahj.2007.06.038.
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
Otros números de identificación del estudio
- BLT006964
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