Dr. Smith's ECG Blog

AUGUST 15, 2019

Over the next few hours, four other general cardiologists "signed off on the initial ECG without recognizing STEMI." Learning Points: STEMI criteria misses 25-40% of OMI, like this case for example. A millimeter definition of acute STEMI should not be needed to justify the need for prompt cardiac catheterization.

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Dr. Smith's ECG Blog

AUGUST 2, 2024

This was a machine read STEMI positive OMI. The meaning of this quote is that at times, something as obvious as the dramatic anterior lead ST elevation that we see in today's tracing is not the result of an acute LAD STEMI. His ECG is shown below. Pretty obvious anterior current of injury. What would you guess is the culprit artery?

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STEMI Ischemia Blog Chest Pain 112

Ken Grauer, MD

JUNE 14, 2024

Prompt cath is therefore advised if the post-ROSC shows an acute STEMI. I i llustrate the ECG finding of T-QRS-D below in Figure-3 , which I've excerpted from My Comment in the November 14, 2019 post in Dr. Smith's ECG Blog. To Emphasize: The phenomenon of T-QRS-D is not needed in today's case to recognize the acute STEMI.

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Blog STEMI Cardiac Arrest Tachycardia 135

Dr. Smith's ECG Blog

JUNE 21, 2023

You can subscribe for news and early access (via participating in our studies) to the Queen of Hearts here: [link] queen-form This EMS ECG was transmitted to the nearby Emergency Department where it was remotely reviewed by a physician, who interpreted it as normal, or at least without any features of ischemia or STEMI.

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Chest Pain Cardiac Arrest STEMI Defibrillator 96

Open Heart

JUNE 21, 2022

Background Several studies have demonstrated that complete revascularisation improves clinical outcomes in patients with ST-segment elevation myocardial infarction (STEMI) and multivessel coronary disease. However, the optimal timing of non-culprit lesion revascularisation remains controversial.

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Myocardial Infarction STEMI Coronary Artery Disease Outcomes 52

Dr. Smith's ECG Blog

APRIL 20, 2019

There is sinus rhythm with minimal STE in V1-V3, not meeting STEMI criteria. Learning Points: Serial ECGs can sometimes turn a difficult decision into a very easy one, but not all OMIs will develop into clear STEMIs quickly, and some OMIs never will manifest STEMI at all.

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STEMI Chest Pain ECG Technician Physiology 52

Dr. Smith's ECG Blog

JUNE 27, 2024

COACT: The COACT trial was fatally flawed, and because of it, many cardiologists are convinced that if there are no STEMI criteria, the patient does not need to go to the cath lab. N Engl J Med [Internet] 2019;Available from: [link] Should all patients with shockable arrest be taken to angiography regardless of STEMI or No STEMI?

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Ken Grauer, MD

DECEMBER 15, 2023

mmm ECG Blog #193 — Reviews the concept of why the term “OMI” ( = O cclusion-based MI ) should replace the more familiar term STEMI — and — reviews the basics on how to predict the " culprit " artery. The importance of the new OMI ( vs the old STEMI ) Paradigm — See My Comment in the July 31, 2020 post in Dr. Smith's ECG Blog.

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Blog STEMI Ischemia Chest Pain 128

Dr. Smith's ECG Blog

OCTOBER 18, 2023

4,5] We have now formally studied this question: Emergency department Code STEMI patients with initial electrocardiogram labeled ‘normal’ by computer interpretation: a 7-year retrospective review.[6] have published a number of warnings about the previous reassuring studies.[4,5]

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Chest Pain STEMI Electrocardiogram Ischemia 121

Dr. Smith's ECG Blog

MARCH 4, 2024

Unknown algorithm The Queen gets it right Case 4 How unreliable are computer algorithms in the Diagnosis of STEMI? The patient's prehospital ECG showed that there was massive STEMI and these are hyperacute T-waves "on the way down" as they normalize. Pain was resolving. Diagnosed as Normal by the computer. Troponin negative.

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STEMI Blog Chest Pain Webinar 112

Ken Grauer, MD

DECEMBER 8, 2023

ECG Blog #193 — Reviews the concept of why the term “OMI” ( = O cclusion-based MI ) should replace the more familiar term STEMI — and — reviews the basics on how to predict the " culprit " artery. The January 9, 2019 post in Dr. Smith's ECG Blog ( Please scroll down to the bottom of the page to see My Comment ).

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Blog Chest Pain STEMI Ischemia 138

Dr. Smith's ECG Blog

JANUARY 3, 2022

Step 1 to missing posterior MI is relying on the STEMI criteria. A prospective validation of STEMI criteria based on the first ED ECG found it was only 21% sensitive for Occlusion MI, and disproportionately missed inferoposterior OMI.[1] But it is still STEMI negative. A 15 lead ECG was done (below). In a study last year, 14.4%

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EMS 12-Lead

AUGUST 14, 2022

[link] deWinter first reported his unique characteristics of LAD occlusion in 2008, and since the respective ECG changes do not fit the conventional STEMI paradigm (as he even stated – “instead of signature ST-segment elevation” ….) it has been subsequently deemed a STEMI-equivalent.

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Ken Grauer, MD

OCTOBER 29, 2023

Figure-4: ECG findings to look for when your patient with new-onset cardiac symptoms does not manifest STEMI-criteria ST elevation on ECG. For my clarifying Figure illustrating T-QRS-D ( 2nd bullet ) — See My Comment at the bottom of the page in Dr. Smith’s November 14, 2019 post.

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Blog Chest Pain STEMI 78

Dr. S. Venkatesan MD

SEPTEMBER 1, 2024

“ Since Intravenous lysis looks too simplistic, that do not need expertise, and lacks a commercial trail, it is wrongly depicted as inferior management strategy in STEMI “ Every one of us is equally responsible for this sorry state of affairs. In LAD STEMI time is more crucial. Circulation 2006;114:2019-25

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Thrombolysis Myocardial Infarction Academic STEMI 52

Circulation

FEBRUARY 26, 2024

The primary safety end point was Bleeding Academic Research Consortium 3 to 5 bleeding at 30 days.RESULTS:Between January 10, 2019, and September 18, 2021, a total of 2989 patients were randomized. The primary efficacy end point occurred in 37 patients (2.5%) in both the PPA and placebo groups (hazard ratio, 1.00 [95% CI, 0.63 to 1.57]).

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Myocardial Infarction Academic Thrombosis STEMI 40

Dr. Smith's ECG Blog

NOVEMBER 4, 2022

This has been termed a “STEMI equivalent” and included in STEMI guidelines, suggesting this patient should receive dual anti-platelets, heparin and immediate cath lab activation–or thrombolysis in centres where cath lab is not available. aVR ST segment elevation: acute STEMI or not? Am J Med 2019, 132(5):622-630.

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Dr. Smith's ECG Blog

MARCH 9, 2023

Barely any STE, and thus not meeting STEMI criteria. Annals of Emergency Medicine Cardiology was called to evaluate the patient immediately for emergent cath, but they stated that the ECG did not meet STEMI criteria and elected to wait for further information before proceeding with cath. He was given 6mg IV morphine for ongoing pain.

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Dr. Smith's ECG Blog

JUNE 19, 2024

His EKG with worse pain now shows enough ST elevation to meet STEMI criteria. The EKG was read by the conventional computer algorithm as diagnostic of “ACUTE MI/STEMI”. The patient started receiving medications for “STEMI” (including heparin!!!) The patient started receiving medications for “STEMI” (including heparin!!!)

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Chest Pain Pericarditis Pacemaker STEMI 63

Dr. Smith's ECG Blog

MAY 23, 2023

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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Dr. Smith's ECG Blog

NOVEMBER 15, 2023

STEMI MINOCA versus NSTEMI MINOCA STEMI occurs in the presence of transmural ischaemia due to transient or persistent complete occlusion of the infarct-related coronary artery. This has resulted in an under-representation of STEMI MINOCA patients in the literature. From Gue at al. Circulation. 2017;135(16):1490–3.

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Dr. S. Venkatesan MD

DECEMBER 29, 2023

Cardiogenic shock (CS)is the most feared event following STEMI. We tend to perceive CS as an exclusive complication of STEMI. The incidence is half of that of STEMI, i.e., 2.5-5%. might show little elevation with considerable overlap of left main STEMI vs NSTEMI ) 2.Onset ACS pathophysiology is not that simple.

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Cardiogenic Shock STEMI Myocardial Infarction Outcomes 52

Dr. Smith's ECG Blog

FEBRUARY 16, 2020

So Shark Fin really is just a dramatic representation of STEMI, and can be in any coronary distribution. So this is STEMI, right? It is often confused with a wide QRS due to conditions such as hyperkalemia. Which artery? There is ST Elevation in every lead except aVR (STD in aVR). Could this be myopericarditis?

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Dr. Smith's ECG Blog

MARCH 31, 2023

This was marked as "Not a STEMI" by the physicians. It is not a STEMI, but it is diagnostic of an LAD OMI (Occlusion MI). has outperformed many cardiologists in its ability to recognize with "high confidence" acute OMIs from ECGs not satisfying STEMI-criteria. This was sent to me by a friend. What About the Initial ECG?

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Chest Pain STEMI Blog Academic 52

Ken Grauer, MD

JANUARY 20, 2024

Another overlooked OMI ( Cardiologist limited by STEMI Definition — OMI evident by Mirror Test ) — See My Comment at the bottom of the page in the September 21, 2020 post on Dr. Smith’s ECG Blog. For my clarifying Figure illustrating T-QRS-D ( 2nd bullet ) — See My Comment at the bottom of the page in Dr. Smith’s November 14, 2019 post.

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Blog Bradycardia STEMI Download 96

Dr. Smith's ECG Blog

JULY 21, 2024

The ECG shows obvious STEMI(+) OMI due to probable proximal LAD occlusion. Figure-2: Reasons for the varied ECG presentation of acute LMain occlusion — excerpted from Dr. Smith’s 8/9/2019 post ( See text ). == Addendum Note: Quinidine has a long history of use to treat cardiac arrhythmias and severe malaria. The below ECG was recorded.

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Arrhythmia Cardiogenic Shock Bradycardia Defibrillator 116

Dr. Smith's ECG Blog

FEBRUARY 13, 2023

There’s inferior ST depression which is reciprocal to subtle lateral convex ST elevation, and the precordial T waves are subtly hyperacute – all concerning for STEMI(-)OMI of proximal LAD. There’s ST elevation I/aVL/V2 that meet STEMI criteria. This is obvious STEMI(+)OMI of proximal LAD. Non-STEMI or STEMI(-)OMI?

Chest Pain 52

Chest Pain STEMI Myocardial Infarction Electrocardiogram 52

Ken Grauer, MD

MARCH 7, 2023

This blog post reviews the basics for predicting the " C ulprit" A rtery — as well as the importance of the term, " O MI" ( = O cclusion-based MI ) as an improvement from the outdated STEMI paradigm. For my clarifying Figure illustrating T-QRS-D ( 2nd bullet ) — See My Comment at the bottom of the page in Dr. Smith’s November 14, 2019 post.

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Dr. Smith's ECG Blog

APRIL 25, 2023

Smith and Meyers to diagnose both obvious (STEMI) and subtle OMI. Smith's ECG Blog how difficult it may sometimes be to distinguish between acute myocarditis vs acute OMI on the basis of ECG findings and the clinical history ( See My Comments in the July 21, 2019 — December 10, 2019 — and January 10, 2020 posts).

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Chest Pain Pericarditis Blog Cardiomyopathy 52

Dr. Smith's ECG Blog

JANUARY 17, 2024

The limb leads have been removed because there was no ST elevation in those leads, the QRS complexes have been obscured because this is irrelevant to STEMI criteria, and red lines have been added to measure ST segment elevation. But STEMI criteria ignore all this and look at ST segments in isolation.

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Chest Pain STEMI Myocardial Infarction Blog 102

Dr. Smith's ECG Blog

DECEMBER 19, 2023

From My Comment in the November 15, 2023 post in Dr. Smith's ECG Blog: Clinical Points about MINOCA: Given the literature citing a 5-15% estimated incidence of MINOCA in patients initially diagosed as having a STEMI or "NSTEMI" — it is important to be aware of the more common entities associated with this entity ( See Figure-2 ).

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Ken Grauer, MD

OCTOBER 21, 2023

It tells us there is an active, ongoing process — and that prompt cath with acute reperfusion is likely to be needed regardless of whether or not the millimeter-definition of a STEMI has been satisfied. The January 9, 2019 post in Dr. Smith's ECG Blog ( Please scroll down to the bottom of the page to see My Comment ).

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Blog Chest Pain Ischemia STEMI 100

Dr. Smith's ECG Blog

JULY 19, 2019

This morphology can be cause by or associated with cocaine: A Patient with Cocaine Chest Pain and Prehospital Computer interpretation of STEMI This is OMI of the anterior, lateral, and inferior walls until proven otherwise. But it does not meet STEMI criteria and it was not initially recognized. The cath lab was now activated.

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Dr. Smith's ECG Blog

FEBRUARY 10, 2023

Inferior ST Depression does NOT mean there is inferior subendocardial ischemia; it is generally reciprocal to high lateral (aVL) subepicardial ischemia (OMI/STEMI) == MY Comment by K EN G RAUER, MD ( 2/10/2023 ): == There are certain patterns in ECG interpretation that experienced providers are able to immediately recognize.

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Dr. Smith's ECG Blog

AUGUST 4, 2024

QOH versions 1 and 2 both say Not OMI, with high confidence, without any clinical context, despite the abnormal STE meeting STEMI criteria. Of note, there is arguably terminal QRS distortion in V4-V6. I sent this to our group without information and Dr. Smith responded: "Not OMI. Pericarditis maybe."

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Dr. Smith's ECG Blog

MAY 6, 2019

If it is STEMI, it would have to be RBBB with STEMI. Although the J-point in each of the 3 inferior leads appears depressed below the baseline — the duration of the depressed ST segment in these leads seemed much shorter to me than what is usually seen with reciprocal ST depression in association with an anterior stemi.

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Chest Pain STEMI Ischemia Myocardial Infarction 52

Dr. Smith's ECG Blog

SEPTEMBER 21, 2020

Are Some Cardiologists Really Limited by Strict Adherence to STEMI millimeter criteria? This is the response he got: Interventionist: "No STEMI, no cath. After stabilizing the patient and recording more ECGs, he tried again: Interventionalist: "It isn't a STEMI." It is a STEMI equivalent. We don't know how many though.

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