Aortic Cardiac Arrest Ischemia 
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 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
OCTOBER 20, 2024
The first task when assessing a wide complex QRS for ischemia is to identify the end of the QRS. The ST segment changes are compatible with severe subendocardial ischemia which can be caused by type I MI from ACS or potentially from type II MI (non-obstructive coronary artery disease with supply/demand mismatch). What do you think?
Dr. Smith's ECG Blog
DECEMBER 18, 2022
The differential is: Posterolateral OMI or subendocardial ischemia The distinction between posterior OMI and subendocardial ischemia can be important and sometimes difficult. A dissection flap is noted in the intrabdominal aorta, and the aortic outflow tract is also noted to appear wider than normal.
Ken Grauer, MD
JUNE 6, 2023
Part of the ST depression with deep T wave inversion in the lateral chest leads clearly reflects LV "strain" from the marked LVH — but despite the very large QRS amplitudes, this ST-T wave appearance looks disproportionate, suggesting at least a component of ischemia. The plan was to proceed as soon as possible with aortic valve replacement.
Dr. Smith's ECG Blog
NOVEMBER 4, 2022
His response: “subendocardial ischemia. Smith : It should be noted that, in subendocardial ischemia, in contrast to OMI, absence of wall motion abnormality is common. With the history of Afib, CTA abdomen was ordered to r/o mesenteric ischemia vs ischemic colitis vs small bowel obstruction. Anything more on history?
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.
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