Cardiogenic Shock Ischemia Tachycardia 
Dr. Smith's ECG Blog
FEBRUARY 16, 2020
A previously healthy 53 yo woman was transferred to a receiving hospital in cardiogenic shock. Here was the ECG: There is sinus tachycardia. Our chief of cardiology, Gautam Shroff, interprets it differently and thinks this is indeed ischemia. This was sent by a reader. and K was normal. This is "Shark Fin" morphology.
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. ACS and STEMI generally do not cause tachycardia unless there is cardiogenic shock. He had this ECG recorded.
Dr. Smith's ECG Blog
SEPTEMBER 5, 2024
Sinus tachycardia has many potential causes. This is especially true for the elderly patient with sinus tachycardia. What is the cause of the sudden tachycardia? The VSR is what is causing the cardiogenic shock! She had a very elevated troponin T at 12,335 ng/L at the time of presentation.
Dr. Smith's ECG Blog
NOVEMBER 19, 2016
DISCUSSION: The 12-lead EKG EMS initially obtained for this patient showed severe ischemia, with profound "infero-lateral" ST depression and reciprocal ST elevation in lead aVR. The ECG cannot diagnose the etiology of ischemia; it only the presence of ischemia, from whatever etiology.
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. 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?
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?
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