Cardiac Arrest Ischemia Stenosis 
Dr. Smith's ECG Blog
APRIL 24, 2015
ST depression is common BOTH after resuscitation from cardiac arrest and during atrial fib with RVR. Again, it is common to have an ECG that shows apparent subendocardial ischemia after resuscitation from cardiac arrest, after defibrillation, and after cardioversion. The patient was cardioverted. This was done.
Dr. Smith's ECG Blog
OCTOBER 28, 2013
STE limited to aVR is due to diffuse subendocardial ischemia, but what of STE in both aVR and V1? 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. Was this: 1) ACS with ischemia and spontaneous reperfusion?
Dr. Smith's ECG Blog
OCTOBER 4, 2010
There is profound LVH with anterolateral ST elevation and reciprocal ST depression in II, III, aVF, and ST depression in V5 and V6 that could all be secondary to LVH or could represent ischemia superimposed on the repolarization abnormalities of LVH: note that wherever there is ST depression, it is associated with a very high voltage R-wave.
Dr. Smith's ECG Blog
SEPTEMBER 29, 2024
Although one may have all kinds of ischemic findings as a result of cardiac arrest (rather than cause of cardiac arrest), this degree of ST elevation and HATW is all but diagnostic of acute proximal LAD occlusion. This rules out subendocardial ischemia and is diagnostic of posterior OMI. V4-5 continue to show STD.
Dr. Smith's ECG Blog
JANUARY 4, 2021
This suggests diffuse subendocardial ischemia. However, along with that subendocardial ischemia, there is also STE in lead III with reciprocal ST depression in aVL, and some STE in V1. If there is also subendocardial ischemia, the ST depression vector remains leftward, with a reciprocal ST Elevation vector also to the right.
EMS 12-Lead
JULY 24, 2023
It should be known that each category can easily manifest the generic subendocardial ischemia pattern. In general, subendocardial ischemia is a consequence of global supply-demand mismatch that usually ameliorates upon addressing, and mitigating, the underlying cause. What’s interesting is that the ECG can only detect ischemia.
Dr. Smith's ECG Blog
NOVEMBER 4, 2022
His response: “subendocardial ischemia. History sounds concerning for ACS (could be critical stenosis, triple vessel), but differential also includes dissection, GI bleed, etc. Smith : It should be noted that, in subendocardial ischemia, in contrast to OMI, absence of wall motion abnormality is common. Anything more on history?
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