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ECG Blog #193 — Reviews the basics for predicting the " culprit " artery ( as well as reviewing why the term "STEMI" — should be replaced by "OMI" = O cclusion-based MI ). . = R elated E CG B log P osts to Today’s Case : ECG Blog #205 — Reviews my S ystematic A pproach to 12-lead ECG Interpretation.
The paramedic called the EM physician ahead of arrival and discussed the case and ECGs, and both agreed upon activating "Code STEMI" (even though of course it is not STEMI by definition), so that the acute LAD occlusion could be treated as fast as possible. So the cath lab was activated. Long term outcome is unavailable.
3) We do not show the upward concavity measurement technique here. == MY Comment , by K EN G RAUER, MD ( 11/27 /2024 ): == For optimally time-efficient identification of acute OMI in the absence of frank ST elevation — it's essential to get good at recognizing hyperacute T waves. "A A picture is worth 1,000 words".
Interpretation : diagnostic of acute anterior OMI with STE less than STEMI criteria in V1-V4, hyperacute T waves in V2-V4, and suspiciously flat isoelectric ST segments in III and aVF suspicious for reciprocal findings. Now it even meets STEMI criteria, and HATWs continue to inflate. So the cath lab was not activated. Ongoing OMI.
So while there’s no diagnostic STEMI criteria, there are multiple ischemic abnormalities in 11/12 leads involving QRS, ST and T waves, which are diagnostic of a proximal LAD occlusion. First trop was 7,000ng/L (normal 25% of ‘Non-STEMI’ patients with delayed angiography have the exact same pathology of acute coronary occlusion.
Despite anticipation by many that the initial post-resuscitation ECG will show an obvious acute infarction — this expected "STEMI picture" is often not seen.
The ECG did not meet STEMI criteria, and the final cardiology interpretation was “ST and T wave abnormality, consider anterior ischemia”. There’s only minimal ST elevation in III, which does not meet STEMI criteria of 1mm in two contiguous leads. But STEMI criteria is only 43% sensitive for OMI.[1]
Obvious infero-postero-lateral STEMI(+)OMI, regardless of context Now let’s put them in order: what was the sequence? With serial ECGs that are ‘STEMI negative’ the physician could have waited for serial troponin levels or referred the patient as “non-STEMI”. What was the outcome and final diagnosis?
I sent this to the Queen of Hearts So the ECG is both STEMI negative and has no subtle diagnostic signs of occlusion. Non-STEMI guidelines call for “urgent/immediate invasive strategy is indicated in patients with NSTE-ACS who have refractory angina or hemodynamic or electrical instability,” regardless of ECG findings.[1]
tim.hodson Mon, 10/07/2024 - 14:45 Oct. 7, 2024 — The Society for Cardiovascular Angiography & Interventions (SCAI) recently announced the publication of the Expert Consensus Statement on the Management of Patients with STEMI Referred for Primary PCI.
The Minneapolis Heart Institute Foundation (MHIF) is presenting leading research focused on trends in ST-elevation myocardial infarction (STEMI), the most severe form of a heart attack, at the American College of Cardiology’s Annual Scientific Session (ACC.24), 24), being held April 6-8 in Atltanta, GA.
The use of physiology-guided complete revascularization is superior to a culprit-only strategy for older patients with either STEMI or NSTEMI, according to a prespecified substudy of the FIRE trial presented at ESC Congress 2024 in London and simultaneously published in JACC.
Immediate Microvascular Physiology After Mechanical Coronary Reperfusion of STEMI. 2024 May, 83 (21) 2077–2079. 2024 May, 83 (21) 2066–2076. MRR = (CFR/FFR) × (P a,rest /P a,hyper ) References Michel Zeitouni, Ghilas Rahoual, Gilles Montalescot, and the ACTION study group. J Am Coll Cardiol. van Leeuwen, Stephen P. Zimmermann.
Circulation, Volume 150, Issue Suppl_1 , Page A4142231-A4142231, November 12, 2024. Background:Little is known about the clinical relevance of interleukin (IL)-6 and the severity of patients with acute ST-elevation myocardial infarction (STEMI). All information about clinical and paraclinical parameters was recorded.
If we took this as the gold standard, we would conclude that the computer interpretation was safe and accurate at least accurate enough to not miss STEMI, and that physicians should not be interrupted to interpret it, because there would be no change in patient management. What is the gold standard for ECG interpretation: patient outcome!!!
Nature Reviews Cardiology, Published online: 23 April 2024; doi:10.1038/s41569-024-01035-9 Data from the DanGer Shock trial demonstrate that implantation of a microaxial flow pump in patients with ST-segment elevation myocardial infarction complicated by cardiogenic shock increases the survival rate compared with standard care alone.
So this NSTEMI was likely a STEMI(-)OMI with delayed reperfusion. The patient was admitted as ‘NSTEMI’ which is supposed to represent a non-occlusive MI, but the underlying pathophysiology is analogous to a transient STEMI. West J Emerg Med 2024). Fortunately the patient did not reocclude while awaiting the angiogram.
While STEMI negative, the ECG is diagnostic of proximal LAD occlusion. Transient STEMI” are often managed like non-STEMI with delayed angiography, which is very risky. This case is an example of the steps we can all take in daily practice as the paradigm shifts from STEMI to OMI.
This certainly looks like an anterior STEMI (proximal LAD occlusion), with STE and hyperacute T-waves (HATW) in V2-V6 and I and aVL. How do you explain the anterior STEMI(+)OMI immediately after ROSC evolving into posterior OMI 30 minutes later? This caused a type 2 anterior STEMI.
Circulation, Volume 150, Issue Suppl_1 , Page A4147134-A4147134, November 12, 2024. Introduction:Elevated LDL cholesterol is linked to microvascular injury and adverse cardiac events in STEMI patients. This study examines the impact of prior statin use on LDL levels at the time of MI, focusing on NSTEMI and STEMI patients.
IMPRESSION: In this patient who presents with severe, new-onset CP — today's ECG is diagnostic of an extensive, ongoing antero-lateral STEMI. ECG Blog #193 — Reviews the basics for predicting the " culprit " artery ( as well as reviewing why the term "STEMI" — should be replaced by "OMI" = O cclusion-based MI ).
Circulation, Volume 150, Issue Suppl_1 , Page A4141319-A4141319, November 12, 2024. Background:The computational pressure-fluid dynamics applied to index of microcirculatory resistance, derived from coronary angiography (CPFD-caIMR) is a promising alternative method of IMR to evaluate the prognosis of STEMI patients.
Its hard to measure the STE in I exactly with the moving baseline, but there is almost certainly not enough STE to meet STEMI criteria. The ACC recognizes these findings as formal STEMI equivalents (though they do not define how to find them). They are symmetric, fat, convex on both sides, etc. 13 post.
Prompt cath is therefore advised if the post-ROSC shows an acute STEMI. To Emphasize: The phenomenon of T-QRS-D is not needed in today's case to recognize the acute STEMI. The decision of whether to cath patients with a less definitive post-ROSC ECG is less clear.
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?
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?
An invasive treatment strategy involving coronary angiography and revascularization plus medical therapy did not significantly lower the composite risk of cardiovascular death or nonfatal myocardial infarction (MI) compared with a conservative strategy of medical therapy alone in older adults with NSTEMI, according to findings from the SENIOR-RITA (..)
Written by Bobby Nicholson What do you think of this “STEMI”? Second, although there is a lot of ST Elevation which meets STEMI criteria, especially in V3-4, the ST segment is extremely upwardly concave with very large J-waves (J-point notching). With EMS, patient had a GCS of 3 and was saturating 60% on room air. ng/mL and 0.10
Nature Reviews Cardiology, Published online: 02 April 2024; doi:10.1038/s41569-024-01020-2 In ST-segment elevation myocardial infarction, the role of interventional modification of thrombi in the coronary arteries before stenting is controversial.
This patient does not show up in the STEMI registry, and the time to reperfusion will likely not be identified as the problem that it was. The STEMI registry will show very high sensitivity of the ECG for STEMI, obscuring the fact the STEMI has low sensitivity for OMI Queen of Hearts sees it easily, like readers of the blog would.
Publication date: Available online 21 March 2024 Source: The American Journal of Cardiology Author(s): Dániel Tornyos, Réka Lukács, András Jánosi, András Komócsi
This ECG is highly concerning for LAD occlusion despite it not showing a STEMI criteria. You can find the variables used to calculate the value on MD calc here: [link] Utilizing Dr. Smith’s Subtle Anterior STEMI Calculator (4-Variable), the value is greater than 18.2 which is concerning for LAD occlusion.
Publication date: Available online 2 July 2024 Source: The American Journal of Cardiology Author(s): Sara J. King, Rajiv Patel, Sameer Arora, George A.
Subtle as a STEMI." (i.e., Here is the bottom line of the article: It is widely believed that hyperacute T-waves are a transitional state preceding ST Elevation 1–4 Thus, it is tempting to postulate that early cases of OMI will eventually evolve to STEMI; yet, our data contradicts that notion. This one is easy for the Queen.
Now it is a full blown STEMI of 3 myocardial territories: inferior, posterior, and lateral But at least it does not call it "Normal." Learning Points: You cannot trust conventional algorithms even to find STEMI(+) OMI, even when they say "normal ECG." At this point — a STEMI was diagnosed, and cardiac cath with PCI was performed.
My New E CG P odcasts ( 5/28/2024 ): These podcasts are part of the Mayo Clinic Cardiovascular CME Podcasts Series ( "Making Waves" ) — hosted by Dr. Anthony Kashou. 2:00 — Dr. Kashou to Dr. Grauer: "In 2024 — Where do you see computerized ECG interpretations and AI?" How much "human oversight" is needed?
The prehospital and ED computer interpretation was inferior STEMI: There’s normal sinus rhythm, first degree AV block and RBBB, normal axis and normal voltages. The paramedic notes called STEMI into question: “EMS disagree with monitor for STEMI callout. Vitals were normal except for oxygen saturation of 94%. Vitals were normal.
Publication date: Available online 22 December 2024 Source: The American Journal of Cardiology Author(s): Sahib Singh, Udaya S Tantry, Young-Hoon Jeong, Paul A Gurbel
A prehospital “STEMI” activation was called on a 75 year old male ( Patient 1 ) with a history of hyperlipidemia and LAD and Cx OMI with stent placement. The two cases were considered: Patient 1 was recognized by the ED provider and the cardiologist as having resolved “STEMI”. He wrote most of it and I (Smith) edited.
ECG Blog #193 — Reviews the basics for predicting the " culprit " artery ( as well as reviewing why the term "STEMI" — should be replaced by "OMI" = O cclusion-based MI ). R elated E CG B log P osts to Today’s Case : ECG Blog #205 — Reviews my S ystematic A pproach to 12-lead ECG Interpretation.
Publication date: Available online 14 November 2024 Source: The American Journal of Cardiology Author(s): Aiham Albaeni, Shuang Li, Yong Shan, Ravi Thakker, Diann E. Gaalema, Ritika Saxena MPH, Yong-fang Kuo, Hani Jneid, James Goodwin
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