Why the study?
Q waves on the electrocardiogram are often considered reflective of irreversibly scarred myocardium due to antecedent transmural myocardial infarction, but this relationship requires evaluation.
Observational (n=100)
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Background: Q waves on the electrocardiogram are often considered to be reflective of irreversibly scarred Myocardium due to antecedent transmural myocardial infarction. However, there are some indications that residual viable tissue may be present in Q wave infracted regions. It is clinically relevant to know how many Q-wave regions contain viable tissue because these patients may benefit from revascularization in terms of improvement of function and long-term survival. A technical advance in contrast-enhanced magnetic resonance imaging (MRI) has significantly improved image quality. We investigated whether healed myocardial infarction can be visualized as hyper enhanced regions with this new technique, and whether assessment of the transmural extent of infarction yields new physiological data. Methods: 100 MRI examinations were carried out in two groups: patients with Q wave and patients without Q wave at the electrocardiogram. Patients with healed myocardial infarction were prospectively enrolled after enyzmatically proven necrosis and imaged by the echocardiography. The MRI procedure used a segmented inversion-recovery gradient-echo sequence
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A 2019 study conducted an observational in Healed myocardial infarction (n=100). Q wave on electrocardiogram vs. No Q wave on electrocardiogram was evaluated on Visualization of healed myocardial infarction as hyper enhanced regions and transmural extent of infarction.
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