Remove Bradycardia Remove STEMI Remove Stents
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Serial ECGs for chest pain: at what point would you activate the cath lab?

Dr. Smith's ECG Blog

There’s competing sinus bradycardia and junctional rhythm, with otherwise normal conduction, borderline right axis, normal R wave progression and voltages. 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.

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A man with chest pain off and on for two days, and "No STEMI" at triage.

Dr. Smith's ECG Blog

This ECG was read as “No STEMI” with no prior available for comparison. It is true this ECG does not meet STEMI criteria (there is 1.0 Soon afterward, the patient’s symptoms return along with lightheadedness, bradycardia, and hypotension. The Queen of Hearts sees it of course: Still none of these three ECGs meet STEMI criteria.

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See OMI vs. STEMI philosophy in action

Dr. Smith's ECG Blog

His first electrocardiogram ( ECG) is given below: --Sinus bradycardia. The lesion was successfully stented. Take home messages: 1- In STEMI/NSTEMI paradigm you search for STE on ECG. Blood pressure: 130/80 mmHg, heart rate: 45/min, respiratory rate: 18/min, SaO2: %98, body temperature: normal. Turk Kardiyol Dern Ars.

STEMI 52
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A 40-Something male with a "Seizure," Hypotension, and Bradycardia

Dr. Smith's ECG Blog

There is an obvious inferior STEMI, but what else? Besides the obvious inferior STEMI, there is across the precordial leads also, especially in V1. This STE is diagnostic of Right Ventricular STEMI (RV MI). In fact, the STE is widespread, mimicking an anterior STEMI. EKG is pictured below: What do you think?

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A 50-something with chest pain. Is there OMI? And what is the rhythm?

Dr. Smith's ECG Blog

I will leave more detailed rhythm discussion to the illustrious Dr. Ken Grauer below, but this use of calipers shows that the rhythm interpretation is: Sinus bradycardia with a competing (most likely junctional) rhythm. For national registry purposes, this will be incorrectly classified as a STEMI.) Large STEMI are approximately 30-80.

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7 steps to missing posterior Occlusion MI, and how to avoid them

Dr. Smith's ECG Blog

Sinus bradycardia, normal conduction, normal axis, normal R wave progression, no hypertrophy. 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]

STEMI 52
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A 50-something with chest pain.

Dr. Smith's ECG Blog

He reports that this chest pain feels different than prior chest pain when he had his STEMI/OMI, but is unable to further describe chest pain. Sensitivity was 87% for OMI in our validation study (it was 34% for STEMI criteria). He has a h/o of 3 vessel disease and stents and his pain has been on and off for days.