Breathing-Induced Myocardial Oxygenation Reserve
B-MORE-Pilot
1 other identifier
observational
113
5 countries
6
Brief Summary
This is a clinical trial to test the clinical feasibility and safety of a novel CMR protocol, combined with a specific breathing maneuver to identify myocardial regions exposed to severe coronary artery stenosis.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for all trials
Started Jan 2016
Longer than P75 for all trials
6 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
Study Start
First participant enrolled
January 1, 2016
CompletedFirst Submitted
Initial submission to the registry
February 8, 2017
CompletedFirst Posted
Study publicly available on registry
February 10, 2017
CompletedPrimary Completion
Last participant's last visit for primary outcome
June 1, 2019
CompletedStudy Completion
Last participant's last visit for all outcomes
March 24, 2022
CompletedOctober 7, 2022
October 1, 2022
3.4 years
February 8, 2017
October 6, 2022
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Comparison of myocardial oxygenation signal intensity changes (OS-SI) changes between healthy and post-stenotic myocardium during OS-CMR with breathing-maneuvers in CAD patients.
Myocardial oxygenation signal intensity changes (OS-SI) changes between healthy and post-stenotic myocardium during OS-CMR with breathing-maneuvers
OS-CMR with breathing maneuvers will last about 5-10 minutes
Secondary Outcomes (4)
Relationship between OS-SI changes during OS-CMR with breathing-maneuvers and Fractional Flow Reserve (FFR) measurements in CAD patients
OS-CMR with breathing maneuvers will last about 5-10 minutes
Relationship between OS-SI changes during OS-CMR with breathing-maneuvers and Quantitative Coronary Angiography (QCA) measurements in CAD patients
OS-CMR with breathing maneuvers will last about 5-10 minutes
Presence of side effects during OS-CMR with breathing maneuvers
OS-CMR with breathing maneuvers will last about 5-10 minutes
Clinical feasibility of OS-CMR with breathing maneuvers
OS-CMR with breathing maneuvers will last about 5-10 minutes
Study Arms (2)
CAD patients
Consecutive patients scheduled for a coronary angiography on the basis of cardiac symptoms and a test positive for inducible coronary ischemia, who are affected by one-vessel or two-vessel CAD at the time of the OS-CMR with breathing maneuvers (HVBH).
Healthy subjects
Subjects without current or pre-existing cardiovascular and lung disease and absence of medication with cardiovascular effects.
Eligibility Criteria
Consecutive patients scheduled for a coronary angiography on the basis of cardiac symptoms and a test positive for inducible coronary ischemia, who show one-vessel or two-vessel CAD at coronary angiography.
You may qualify if:
- Age \> 18 y
- Informed consent as documented by signature (Appendix Informed Consent Form)
- Indication for invasive coronary angiography based on symptoms and a test positive for inducible coronary ischemia
- One-vessel or two-vessel CAD at coronary angiography (For healthy volunteers: absence of current or pre-existing cardiovascular and lung disease and absence of medication with cardiovascular effects)
You may not qualify if:
- General MRI contraindications (i.e pacemakers, defibrillating wires, implanted defibrillators, intracranial aneurysm clips, metallic foreign bodies in the eyes, knowledge or suspicion of pregnancy)
- Acute Coronary Syndrome (ACS) or other acute cardiac injury within 4 weeks
- Previous myocardial infarction, percutaneous coronary intervention or coronary artery bypass surgery
- Hemodynamically unstable conditions
- Significant or uncontrolled arrhythmias
- Lack of ability to follow commands
- Vasoactive medication (e.g. nitro or ß blockers) or nutrition with caffeine (coffee, tea, cocoa, chocolate, "energy drink") during the 12 h before the exam
- Non-ischemic cardiomyopathy
- Severe Pulmonary Disease
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- McGill University Health Centre/Research Institute of the McGill University Health Centrelead
- University Hospital Heidelbergcollaborator
- Groote Schuur Hospitalcollaborator
- King's College Londoncollaborator
- University of Wisconsin, Madisoncollaborator
- Jewish General Hospitalcollaborator
Study Sites (6)
University of Wisconsin
Madison, Wisconsin, 53792, United States
Jewish General Hospital
Montreal, Quebec, 3755, Canada
McGill University Health Centre
Montreal, Quebec, H4A 3J1, Canada
University Hospital Heidelberg
Heidelberg, 69120, Germany
Groote Schuur Hospital
Cape Town, 7935, South Africa
King's College London
London, WC2R 2LS, United Kingdom
Related Publications (11)
Friedrich MG, Niendorf T, Schulz-Menger J, Gross CM, Dietz R. Blood oxygen level-dependent magnetic resonance imaging in patients with stress-induced angina. Circulation. 2003 Nov 4;108(18):2219-23. doi: 10.1161/01.CIR.0000095271.08248.EA. Epub 2003 Oct 13.
PMID: 14557359BACKGROUNDArnold JR, Karamitsos TD, Bhamra-Ariza P, Francis JM, Searle N, Robson MD, Howells RK, Choudhury RP, Rimoldi OE, Camici PG, Banning AP, Neubauer S, Jerosch-Herold M, Selvanayagam JB. Myocardial oxygenation in coronary artery disease: insights from blood oxygen level-dependent magnetic resonance imaging at 3 tesla. J Am Coll Cardiol. 2012 May 29;59(22):1954-64. doi: 10.1016/j.jacc.2012.01.055.
PMID: 22624835BACKGROUNDFriedrich MG, Karamitsos TD. Oxygenation-sensitive cardiovascular magnetic resonance. J Cardiovasc Magn Reson. 2013 May 24;15(1):43. doi: 10.1186/1532-429X-15-43.
PMID: 23706167BACKGROUNDLuu JM, Friedrich MG, Harker J, Dwyer N, Guensch D, Mikami Y, Faris P, Hare JL. Relationship of vasodilator-induced changes in myocardial oxygenation with the severity of coronary artery stenosis: a study using oxygenation-sensitive cardiovascular magnetic resonance. Eur Heart J Cardiovasc Imaging. 2014 Dec;15(12):1358-67. doi: 10.1093/ehjci/jeu138. Epub 2014 Aug 7.
PMID: 25104812BACKGROUNDGuensch DP, Fischer K, Flewitt JA, Friedrich MG. Impact of intermittent apnea on myocardial tissue oxygenation--a study using oxygenation-sensitive cardiovascular magnetic resonance. PLoS One. 2013;8(1):e53282. doi: 10.1371/journal.pone.0053282. Epub 2013 Jan 3.
PMID: 23301055BACKGROUNDGuensch DP, Fischer K, Flewitt JA, Yu J, Lukic R, Friedrich JA, Friedrich MG. Breathing manoeuvre-dependent changes in myocardial oxygenation in healthy humans. Eur Heart J Cardiovasc Imaging. 2014 Apr;15(4):409-14. doi: 10.1093/ehjci/jet171. Epub 2013 Sep 27.
PMID: 24078154BACKGROUNDFischer K, Guensch DP, Friedrich MG. Response of myocardial oxygenation to breathing manoeuvres and adenosine infusion. Eur Heart J Cardiovasc Imaging. 2015 Apr;16(4):395-401. doi: 10.1093/ehjci/jeu202. Epub 2014 Oct 21.
PMID: 25336541BACKGROUNDNeill WA, Hattenhauer M. Impairment of myocardial O2 supply due to hyperventilation. Circulation. 1975 Nov;52(5):854-8. doi: 10.1161/01.cir.52.5.854.
PMID: 1175266BACKGROUNDSueda S, Saeki H, Otani T, Ochi N, Kukita H, Kawada H, Matsuda S, Uraoka T. Investigation of the most effective provocation test for patients with coronary spastic angina: usefulness of accelerated exercise following hyperventilation. Jpn Circ J. 1999 Feb;63(2):85-90. doi: 10.1253/jcj.63.85.
PMID: 10084369BACKGROUNDNakao K, Ohgushi M, Yoshimura M, Morooka K, Okumura K, Ogawa H, Kugiyama K, Oike Y, Fujimoto K, Yasue H. Hyperventilation as a specific test for diagnosis of coronary artery spasm. Am J Cardiol. 1997 Sep 1;80(5):545-9. doi: 10.1016/s0002-9149(97)00419-0.
PMID: 9294979BACKGROUNDChauhan A, Mullins PA, Taylor G, Petch MC, Schofield PM. Effect of hyperventilation and mental stress on coronary blood flow in syndrome X. Br Heart J. 1993 Jun;69(6):516-24. doi: 10.1136/hrt.69.6.516.
PMID: 8343318BACKGROUND
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Matthias Friedrich, MD
McGill University Health Centre/Research Institute of the McGill University Health Centre
Study Design
- Study Type
- observational
- Observational Model
- OTHER
- Time Perspective
- PROSPECTIVE
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Chief, Cardiovascular Imaging, McGill University Health Centre
Study Record Dates
First Submitted
February 8, 2017
First Posted
February 10, 2017
Study Start
January 1, 2016
Primary Completion
June 1, 2019
Study Completion
March 24, 2022
Last Updated
October 7, 2022
Record last verified: 2022-10