Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
20 participants
OBSERVATIONAL
2009-11-30
2011-10-31
Brief Summary
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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.
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Detailed Description
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Conditions
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Study Design
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COHORT
RETROSPECTIVE
Study Groups
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Post MI patients
Patients recruited following a successfully reperfused myocardial infarction using primary angioplasty.
No interventions assigned to this group
Eligibility Criteria
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Inclusion Criteria
2. Acute PCI / stent implantation has been successful (residual stenosis visually \< 30% and TIMI flow ≥ 2)
3. At the time of inclusion, the patient no longer requires intravenous catecholamines or mechanical hemodynamic support (aortic balloon pump)
4. Serum troponin \>1ng/ml 12 hours after onset of pain
5. The patient is able to give written informed consent
6. The patient must be able to understand and communicate in English
Exclusion Criteria
2. Previous documented myocardial infarction
3. Previous percutaneous coronary intervention or coronary artery bypass surgery
4. Significant renal dysfunction (EGFR\<30)
5. Systemic steroid therapy
6. Current non steroidal anti-inflammatory drug use
7. Chronic inflammatory disease
8. Neoplastic disease without documented remission within the past 5 years
9. Pregnancy
10. Reduced mental capacity leading to inability to obtain informed consent
11. Participation in another clinical trial within the last 30 days
18 Years
ALL
No
Sponsors
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Barts & The London NHS Trust
OTHER
Responsible Party
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Principal Investigators
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Thomas R Burchell, BSc, MB BS
Role: PRINCIPAL_INVESTIGATOR
Bart's and The London NHS Trust, United Kingdom
Locations
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The London Chest Hospital
London, Greater London, United Kingdom
Countries
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References
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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.
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.
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.
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.
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.
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.
Other Identifiers
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BLT006964
Identifier Type: -
Identifier Source: org_study_id
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