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ECG Blog #366 — Diltiazem didn't work.

Ken Grauer, MD

The ECG and long lead II rhythm strip in Figure-1 — was obtained from a COVID positive patient with persistent tachycardia not responding to Diltiazem. Figure-1: The initial ECG — obtained from a patient with persistent tachycardia. ( To improve visualization — I've digitized the original ECG using PMcardio ).

EKG/ECG 195
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Chest pain and new regional/reciprocal ECG changes compared to previous ECGs: code STEMI?

Dr. Smith's ECG Blog

Below is old and then new ECG (old on top; new below). Both ECGs have normal sinus rhythm, normal conduction and normal voltages. Because of the ECG changes in a patient with chest pain, and with inferolateral hypokinesis on POCUS, the cath lab was activated. What do you think? But do they represent acute coronary occlusion?

EKG/ECG 80
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Is OMI an ECG Diagnosis?

Dr. Smith's ECG Blog

What do you think of the ECG, and does it matter? I sent this to the Queen of Hearts So the ECG is both STEMI negative and has no subtle diagnostic signs of occlusion. 2] This is because, contrary to Bayesian reasoning, the STEMI paradigm is named after and defined by one part of one test: ST elevation on ECG. But only 6.4%

EKG/ECG 108
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Four patients with chest pain and ‘normal’ ECG: can you trust the computer interpretation?

Dr. Smith's ECG Blog

All initial ECGs were labeled ‘normal’ or ‘otherwise normal’ by the computer interpretation, and below are the ECGs with the final cardiology interpretation. 1-3] But these studies were very short duration and used cardiology interpretation of ECGs or emergent angiography rather than patient outcomes.

EKG/ECG 111
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Occlusion myocardial infarction is a clinical diagnosis

Dr. Smith's ECG Blog

Willy is a cardiology fellow with a keen interest in the ECG in OMI. Triage documented a complaint of left shoulder pain. If an immediate EKG was obtained, it was not saved in the medical record. A patient with OMI can have a totally normal ECG!" Cardiology was consulted, and repeat EKG was obtained at around 2:30 AM.

EKG/ECG 113
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When the conventional algorithm diagnoses the ECG as COMPLETELY NORMAL, but there is in fact OMI, what does the Queen of Hearts PM Cardio AI app say? (with 10 case examples)

Dr. Smith's ECG Blog

I have often written about how an ECG interpreted as "normal" by a conventional algorithm may well be manifesting OMI, or even long QT or hyperkalemia. Shifa Karim and Gabe Keller helped with a project to assess all these ECGs with the Queen of Hearts. The ECG told the story. I wanted to show some of the cases here.

EKG/ECG 98
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Chest pain and a computer ‘normal’ ECG. Therefore, there is no need for a physician to look at this ECG.

Dr. Smith's ECG Blog

Below is the triage ECG, with a computer interpretation (Marquette 12 SL) of “normal” which was confirmed by the over-reading cardiologist. Should this patient continue to stay in the waiting room, without interruption of the physician to interpret the ECG, because the computer interpretation is normal? What do you think?

EKG/ECG 91