Clinically unrecognized myocardial scars detected by MR are not associated with coronary artery disease
(English)Manuscript (preprint) (Other academic)
We have previously discovered an unexpected high prevalence of unrecognized myocardial infarction (UMI) scars by delayed-enhanced magnetic resonance imaging (DE-MRI) in the general elderly population. We now investigated if those UMIs were associated with coronary artery disease (CAD).
Eighty-eight subjects from the PIVUS study (age 75-years) who had been investigated with DE-MRI (45 with UMI and 43 without DE-MRI-detected scars) underwent coronary computed tomography angiography (CTA) to assess Agatston calcium score and coronary artery stenosis. Of those, 65 also performed an exercise ECG test.
No differences were found between the subjects with UMI and the group without DE-MRI-detected scars regarding the number of coronary artery segments with significant stenosis, Agatston calcium score, or degree of ST-depression at the exercise test.
DE-MRI-detected UMI scars do not have an increased prevalence of coronary artery stenosis or signs of myocardial ischemia at exercise test when compared to a control group. These findings indicate that UMI scars in general are not related to CAD.
Unrecognized myocardial infarction; delayed-enhanced magnetic resonance imaging; coronary computed tomography angiography; exercise test; coronary artery disease
Radiology, Nuclear Medicine and Medical Imaging Cardiac and Cardiovascular Systems
Research subject Radiology; Cardiology; Epidemiology
IdentifiersURN: urn:nbn:se:uu:diva-172070OAI: oai:DiVA.org:uu-172070DiVA: diva2:513402