Remove 2013 Remove STEMI Remove Stent
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A man in his early 40s with chest pain a "normal ECG" by computer algorithm. Should we avoid interrupting a physician to interpret his ECG?

Dr. Smith's ECG Blog

Notice on the right side of the image how the algorithm correctly measures STE sufficient in V1 and V2 to meet STEMI criteria in a man older than age 40. As most would agree, this ECG shows highly specific findings of anterolateral OMI, even with STEMI criteria in this case. Thus, this is obvious STEMI(+) OMI until proven otherwise.

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Is There a Delayed Activation Wave???

Dr. Smith's ECG Blog

One of our fine interns, Daniel Lee, who is also an ECG whiz, found this paper from 2013 and brought it to my attention: The delayed activation wave in non-ST-elevation myocardial infarction. They do not study whether this wave differentiates between MI and non-MI, between STEMI and NonSTEMI, or between OMI and NOMI.

STEMI 52
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Concerning EKG with a Non-obstructive angiogram. What happened?

Dr. Smith's ECG Blog

Unfortunately, we do not have those images for review, but the operators described a ruptured LAD plaque and they stented this area, which ensures the stability of the plaque. The image on the left shows the LAD before intervention, and the red circled portion on the right indicates the stented region.

Plaque 126
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Cardiac arrest: even after the angiogram, the diagnosis is not always clear

Dr. Smith's ECG Blog

The last section is a detailed discussion of the research on aVR in both STEMI and NonSTEMI. The additional ST Elevation in V1 is not usually seen with diffuse subendocardial ischemia, and suggests that something else, like STEMI from LAD occlusion, could be present. It was stented. If you want to understand aVR, read this.]

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Occlusion/reperfusion through 6 ‘normal’ ECGs

Dr. Smith's ECG Blog

While this ECG is negative for “posterior STEMI”, the resolution of anterior ST depression (accompanied by the troponin elevation) confirms posterior OMI with spontaneous reperfusion. The second opportunity to make the diagnosis and expedite angiography was missed because the ECG never met STEMI criteria and continued to be labeled ‘normal.’

STEMI 40
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Target Acquired

EMS 12-Lead

He reported a history of ischemic cardiomyopathy with coronary stent placement approximately 10 years prior, but could not recall the specific artery involved. ASA 324mg was administered while a STEMI activation was simultaneously transmitted to the nearest PCI center. A 99% LAD occlusion was stented. Attached is the first ECG.

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A man in his 70s with acute chest pain and paced rhythm.

Dr. Smith's ECG Blog

Code STEMI was activated by the ED physician based on the diagnostic ECG for LAD OMI in ventricular paced rhythm. This was several months after the 2022 ACC Guidelines adding modified Sgarbossa criteria as a STEMI equivalent in ventricular paced rhythm). LAFB, atrial flutter, anterolateral STEMI(+) OMI. Limkakeng AT.