Jesse McLaren

Emergency physician @UHN, Associate prof @UofT. #ECG blog/podcast for @EMcases, an associate editor of @smithECGblog, teacher @heartsECGcourse🫀 (he/him)

[Jesse McLaren @ECGcases]

From ST Elevation MI to Occlusion MI: the new paradigm shift in Acute Myocardial Infarction. New @JACCJournals #JACCAdvances state-of-the-art review with Jose Nunes de Alencar, @AslangerE, @PendellM and @smithECGBlog https://t.co/ccnX3at4X2

[Emre Aslanger @AslangerE]

Pleased to share our DIFOCCULT-3 substudy in JACC: Cardiovascular Interventions.

In 4,398 patients without diagnostic STE, OMI/NOMI triage doubled ACO identification within 2 h without reducing angiographic yield.

https://t.co/TLPh7I26sg

[Jesse McLaren @ECGcases]

Excited for #ACEP26 this week, and the opportunity to speak on #ECG interpretation, #AI tools like @PMcardioApp, and the paradigm shift from #STEMI to #OcclusionMI.
@ACEPNation

[Anton Helman @EMCases]

🚨 Tickets are selling fast as 300+ EM colleagues are already registered for #EMCasesSummit.

🌎 World-class EM faculty
💬 Interactive talks & discussion
🚑 Virtual simulations
🎓 CME from home
3 days to reinvigorate your practice.

Nov 19–21
https://t.co/lYCuDr5xtB

[Dave Richley @DaveRichley]

@DrGoblin3 @TrackYourHeart Here are examples of the true South African flag sign, where STE is limited to leads I, aVL and V2, due to an occlusion of the 1st diagonal: https://t.co/CKmvXWRkpU

[Stephen W. Smith @smithECGBlog]

50-year old with chest pain: serial ECG ‘STEMI negative:’ does the patient have Occlusion MI (OMI)?

https://t.co/HSsy7UP9pU

Highlights the stupidity of the NSTEMI guidelines: "NSTEMI" is worthless, and no one follows the "high risk" NSTEMI guidelines.

@ECGcases @PMcardioApp

[Mark Hellerman, MD @DrMarkHellerman]

🚨 Update to OMIGuide!

Huge shoutout to Mriganka Nerkar, MS4, who led a major expansion of the guide - adding 100+ new cases from Dr. Smith’s ECG Blog since our original launch in 2023!

Check out the updates at https://t.co/y1VYtRDdm5

@smithECGBlog @PendellM @WillyFrick

[heartsECGcourse @heartsECGcourse]

75 year-old with sudden shortness of breath. What’s the cause of the wide complex tachycardia?

#ECG #EKG #cardiotwitter

https://t.co/4YifdX7m26

[Stephen W. Smith @smithECGBlog]

Queen of Hearts Now FDA Approved!!

What’s her take on this “Non-diagnostic” ECG?

https://t.co/OBZ80omLnW

@PMcardioApp

[Emergency Medicine News @EMNews]

We've built acute MI care around STEMI criteria, but are ECG thresholds missing too many occluded arteries?⚡

1 in 3 patients labeled NSTEMI may actually have a totally occluded culprit artery, often waiting hours longer for reperfusion.
https://t.co/CfhJsF5vAD

[heartsECGcourse @heartsECGcourse]

50 year-old with weakness. Is this ischemia?

#ECG #EKG #cardiotwitter

https://t.co/tWUvcpVkp7

[CJEM @CJEMonline]

🚨 The September 2026 issue of #CJEM is live!

This month's issue brings together 21 articles tackling some of emergency medicine's biggest challenges and opportunities:

🔹 ED crowding and patient flow
🔹 Interhospital transfers
🔹 Climate change and emergency care
🔹 Bronchiolitis management
🔹 Pediatric suicidal ideation and ketamine
🔹 Pain assessment in older adults
🔹 Stroke care updates
🔹 ECG competency in EM residency training
🔹 Simulation-based education and PoCUS

Featured articles include:

📖 Just the Facts: Can we “fix” emergency department crowding? Lessons from EM:POWER

📖 Just the Facts: Bronchiolitis in the pediatric population

📖 Original research on Canadian interhospital transfers, climate change impacts on pediatric emergency medicine, ketamine for pediatric suicidal ideation, and more.

Read the full issue here: 🔗 https://t.co/exBaPebBxK

#EmergencyMedicine #CJEM #FOAMed #MedTwitter #PedsEM #Stroke #PoCUS #MedEd #PatientFlow #HealthSystems #CAEP

[Anton Helman @EMCases]

🚨 EM CASES SUMMIT 2026 🚨

🌎 Nov 19–21 • ONLINE
🔥 World-class EM faculty
🩺 Practice-changing talks
🚑 Procedures + resus simulations
💬 Expert panels
🎓 CME
🎁 Giveaways
▶️ 3 months access to all talks
Tickets on sale now!
https://t.co/lYCuDr5xtB

[Stephen W. Smith @smithECGBlog]

@PMcardioApp @ECGcases

[Stephen W. Smith @smithECGBlog]

Just published Ed and European Hart Journal Acute cardiovascular Care

@PMcardioApp @josenalencar @ECGcases

https://t.co/UR8ip3df1J

[Dr. Martha Gulati ♥️🫀❤️‍🩹🇨🇦 @DrMarthaGulati]

Congratulations to @RodrigoZoniOK on leading our paper: Reconsidering fibrinolysis in selected patients with non–ST-elevation acute coronary syndrome: A hypothesis-generating, research-based framework
#NSTEMI #ACS #reperfusion

🔗@AmericanHeartJ
https://t.co/Ki0x412fyl

[Jesse McLaren @ECGcases]

New from @jem_journal : Diagnostic dilemma: acute aortic syndrome vs acute coronary occlusion in the emergency department

https://t.co/2CipyknCdj

[Josh Farkas MD 💊 @PulmCrit]

The 5th universal definition of MI invokes the concept of "regional ST-segment depression" due to supply-demand imbalance.🤦‍♂️

This concept is incorrect and misleading, because subendocardial ischemia DOESN'T localize to any region.

There are really just TWO possible patterns of acute myocardial ischemia on an ECG:

[#1] Subendocardial ischemia (diffuse STD).
[#2] Transmural ischemia (which often causes regional STE and regional ST depression due to reciprocal changes).

The concept of "regional ST-segment depression due to supply-demand mismatch" is misleadingly dangerous, because this is often *incorrectly* invoked to explain regional reciprocal STD. This causes clinicians to *miss* the true diagnosis of transmural infarction (e.g., posterior transmural ischemia causing anterior STD).

It would be safest to eliminate the myth of "regional ST-segment depression due to supply-demand mismatch" in order to force ECG readers to choose between the only two real ECG manifestations of ischemia: subendocardial ischemia or transmural ischemia.

[heartsECGcourse @heartsECGcourse]

90 year old with weakness, vomiting and paced rhythm - what treatment is needed?

#ECG #EKG #cardiotwitter

https://t.co/D8ljSOJlQL

[Jesse McLaren @ECGcases]

Bradycardia in the emergency department: quality measures and opportunities for improvement

https://t.co/AWiX5J4XPN

[Stephen W. Smith @smithECGBlog]

4 patients with ST elevation, infection, and elevated troponin: which is Occlusion MI and which is myocarditis?

https://t.co/PFKQGgFNwB

@PMcardioApp @ECGcases