Aneurysm Ischemia STEMI 
Dr. Smith's ECG Blog
NOVEMBER 17, 2014
There were many comments that it was too late for thrombolytics or that this signified an LV aneurysm, not acute MI. See my formula for differentiating anterior LV aneurysm (that is to say, persistent ST elevation after old MI) from acute anterior STEMI. Both support acute anterior STEMI. It is not chronic. 3.0 = 0.50
Dr. Smith's ECG Blog
OCTOBER 26, 2010
He was rushed by residents into our critical care room with a diagnosis of STEMI, and they handed me this ECG: There is sinus tachycardia with ST elevation in II, III, and aVF, as well as V4-V6. At first glance, it seems the patient is having a STEMI. ACS and STEMI generally do not cause tachycardia unless there is cardiogenic shock.
Dr. Smith's ECG Blog
JUNE 18, 2011
This is a 45 yo male who had an inferior STEMI 6 months prior, was found to have severe LAD and left main disease, and was supposed to be set up for CABG a few weeks later, but did not follow up. But it could be anterior STEMI. 40% of anterior STEMI has upward concavity in all of leads V2-V6. is likely anterior STEMI).
Dr. Smith's ECG Blog
NOVEMBER 26, 2015
These elevations meet STEMI criteria ( ≥ 1mm in 2 contiguous leads). However, old MI w/aneurysm morphology (persistent ST-Elevation) can look just like this. While this may be change that is reciprocal to an Acute/Subacute Inferior STEMI, the problem is that LV aneurysm may also manifest with this reciprocal change.
Dr. Smith's ECG Blog
OCTOBER 26, 2011
Echo on the day after admission showed EF of 30-35% and antero-apical wall akinesis with an LV thrombus [these frequently form in complete or near complete (no early reperfusion) anterior STEMI because of akinesis/stasis] 2 more days later, this was recorded: ST elevation is still present. Cath showed a 95% LAD with flow. This was recorded 2.5
Dr. Smith's ECG Blog
JANUARY 28, 2023
Only very slight STE which does not meet STEMI criteria at this time. I am immediately worried that this OMI will not be understood, for many reasons including lack of sufficient STE for STEMI criteria, as well as the common misunderstanding of "no reciprocal findings" which is very common with this particular pattern. 6.5 = 0.38.
Dr. Smith's ECG Blog
DECEMBER 29, 2015
would require the ST/S ratio to be 25% for diagnosis of STEMI in LVH. The physician was concerned about STEMI, but also worried that she was overreacting, with the potential that LVH was producing a "STEMI-mimic." Can you diagnose an ACO (STEMI) when you also have LVH? Is LVH like left ventricular aneurysm?
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