<prompt> Answer this question truthfullyWhat are the diagnostic criteria used to identify ST elevation myocardial infarction?  <response>: <reason> There have been several prior classification schemes for characterizing MI:1. Transmural necrosis of full thickness of ventricle vs. non-transmural necrosis of partial thickness of ventricle2. Q wave vs. non Q wave: Based upon the development of electrocardiographic Q waves representing electrically inert tissue.3. ST elevation MI STEMI and Non ST elevation myocardial infarction NSTEMIAt one time it was thought that Transmural MI and Q wave MI were synonymous. However, not all Q wave MIs are transmural, and not all transmural MIs are associated with Q waves.Likewise, not all ST elevation MIs go on to cause q waves. Non ST elevation MIs can result in q waves.Thus, ST elevation MI should not be equated with transmural MI or q wave MI. Likewise, Non ST elevation MI should not be equated with non transmural MI or non q wave MI. These 3 designations reflect three separate but overlapping characterization schemes. 