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Here is his initial ED ECG: The R-wave in V4 extends to 33 mm, the computerized QTc is 372 ms The only available previous ECG is from one year ago, during the admission when he was diagnosed with pericarditis: 1 year ago ECG, with clinician and computer interpretatioin of pericarditis Normal 0 false false false EN-US X-NONE X-NONE What do you think?
Here they are: Patient 1, ECG1: Zoll computer algorithm stated: " STEMI , Anterior Infarct" Patient 2, ECG1: Zoll computer algorithm stated: "ST elevation, probably benign early repolarization." He diagnosed anterior "STEMI" and activated the cath lab. 25 minutes later, EMS called back with this new ECG: Super obvious STEMI(+) OMI.
So Shark Fin really is just a dramatic representation of STEMI, and can be in any coronary distribution. So this is STEMI, right? Well, don't we see diffuse ST Elevation in Myo-pericarditis (with STD in aVR)? It is often confused with a wide QRS due to conditions such as hyperkalemia. Which artery? Could this be myopericarditis?
These latter findings are typical of pericarditis, but pericarditis never has reciprocal ST depression. It definitely does not fulfill STEMI criteria, and I would argue that it would not lead to cath lab activation in most centers. Usually with pericarditis and myocarditis — hyperacute T waves (HATW) are not present.
This ECG clearly meets STEMI criteria by the way, regardless of age or gender. Haven't you been taught that this favors pericarditis? Weren't you taught that concave morphology favors pericarditis? This is a high troponin (most STEMI are above 10 ng/mL for troponin I). There is no STE or STD in III an aVF.
First, many on Twitter said "Pericarditis". This is NOT pericarditis, which virtually NEVER has ST depression any where except aVR. See our publication: ST depression in lead aVL differentiates inferior ST-elevation myocardial infarction from pericarditis There is STE in inferior leads, high lateral leads, and V4-V6.
She was diagnosed with pericarditis and spent one day in the hospital without events. Much more classic findings of pericarditis. Learning Points: Pericardial effusion is a key piece of information for the diagnosis and prognosis of pericarditis. Another ECG was performed, and this time was noted to be markedly abnormal.
It could also be due to pericarditis or myocarditis, but I always say that "you diagnose pericarditis at your peril." The clinical presentation is very suggestive of myo-pericarditis. But one should always remember that acute MI is a far more common pathology than myo- or pericarditis. Pericarditis? 13, 2019 Dr.
ECG read as: "Shows T wave inversions in the inferior leads and less than 1mm STE in V2, without STEMI criteria." All very very subtle. So the patient was placed back in the waiting room like many others. Aspirin was given. History and more info?" (I What is the South African Flag Sign?
Discharge Diagnosis was STEMI (The STE did not meet "criteria," so "OMI" would be better, but "STEMI" is far better than what this could have been called: NonSTEMI) Quotes from a note written by a really fine and knowledgable physician: "12-lead EKG was obtained initial 1 at time zero. Initial troponin came back negative."
Recall from this post referencing this study that "reciprocal STD in aVL is highly sensitive for inferior OMI (far better than STEMI criteria) and excludes pericarditis, but is not specific for OMI." St depression in lead AVL differentiates inferior st-elevation myocardial infarction from pericarditis. The case continues.
As always, takotsubo cardiomyopathy and focal pericarditis can mimic OMI, but takotsubo almost never mimics posterior MI, and both are diagnoses of exclusion after a negative cath. The provider contacted cardiology to discuss the case, but cardiology "didn't think it was a STEMI, didn't think he needed emergent cath." Canto et al.
50% of LAD STEMIs do not have reciprocal findings in inferior leads, and many LAD OMIs instead have STE and/or HATWs in inferior leads instead. The ECG easily meets STEMI criteria in all leads V2-V6, as well. 24 yo woman with chest pain: Is this STEMI? Pericarditis? Beware a negative Bedside ultrasound.
The emergency medicine physician documented, "His initial EKG is riddled with artifact and difficult to interpret but does not look like a STEMI." The ECG remains positive for STEMI by GE. The absolute degree of ST elevation (although enough to meet STEMI criteria), was still relatively small.
.: 50% of LAD STEMI have Q-waves by one hour. The exception is with postinfarction pericarditis , in which a completed transmural infarct results in inflammation of the subepicardial myocardium and STE in the distribution of the infarct, and which results in increased STE and large upright T-waves. So it is not necessarily subacute.
ECG met STEMI criteria and was labeled STEMI by computer interpretation. J waves can also be induced by Occlusion MI (5), STEMI mimics including takotsubo and myocarditis complicated by ventricular arrhythmias (6, 7), and subarachnoid hemorrhage with VF (8). Take home : Not all STEs are STEMIs or OMIs. What do you think?
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