Non-transmural myocardial infarction

A non-transmural myocardial infarction refers to a myocardial infarction that does not involve the full thickness of the myocardium. It was one believed that the development of Q waves indicated that the infarction was “transmural”, however autopsy studies failed to confirm this. The terms Q wave MI, non-Q wave MI, transmural MI and non-transmural MI are no longer recommended for use. Instead, acute coronary syndromes are classified as unstable angina, non-ST elevation myocardial infarction and ST elevation myocardial infarction.