Remove Aortic Remove Coronary Angiogram Remove STEMI
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A 30-something woman with intermittent CP, a HEART score of 2 and a Negative CT Coronary Angiogram on the same day

Dr. Smith's ECG Blog

A CT Coronary angiogram was ordered. Here are the results: --Minimally obstructive coronary artery disease. --LAD No signs for aortic dissection or pulmonary embolus. --"Results were discussed with the ordering physician. Thus, Wellens' syndrome should be thought of as a transient OMI or transient STEMI.

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An undergraduate who is an EKG tech sees something. The computer calls it completely normal. How about the physicians?

Dr. Smith's ECG Blog

The Queen of Hearts disagrees, diagnosing OMI with high confidence: Case Continued: The EKG was not immediately recognized by the emergency provider, who ordered a CT scan to rule out aortic dissection at 1419. Most STEMI have peak troponin I over 1000 ng/L and most NSTEMI below that level.

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See OMI vs. STEMI philosophy in action

Dr. Smith's ECG Blog

As his pain was very severe, emergency physicians concerned of aortic dissection and ordered a thoracic CT scan. Coronary arteries cannot be assessed because the scan was not gated, but proximal segments of the coronary arteries seem to be open with some contrast. Here is the post-intervention angiogram and post-PCI ECG.

STEMI 52
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90 year old with acute chest and epigastric pain, and diffuse ST depression with reciprocal STE in aVR: activate the cath lab?

Dr. Smith's ECG Blog

This has been termed a “STEMI equivalent” and included in STEMI guidelines, suggesting this patient should receive dual anti-platelets, heparin and immediate cath lab activation–or thrombolysis in centres where cath lab is not available. aVR ST segment elevation: acute STEMI or not? Incidence of an acute coronary occlusion.

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Diffuse Subendocardial Ischemia on the ECG. Left main? 3-vessel disease? No!

Dr. Smith's ECG Blog

Look at the aortic outflow tract. Clinical Course The paramedic activated a “Code STEMI” alert and transported the patient nearly 50 miles to the closest tertiary medical center. The diagnostic coronary angiogram identified only minimal coronary artery disease, but there was a severely calcified, ‘immobile’ aortic valve.

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Hypertrophic Cardiomyopathy

EMS 12-Lead

There is ventricular hypertrophy in the absence of abnormal loading conditions, such as aortic stenosis, or hypertension, for example – of which the most common variant is Asymmetric Septal Hypertrophy. This worried the crew of potential acute coronary syndrome and STEMI was activated pre-hospital.

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A teenager with chest pain, a troponin below the limit of detection, and "benign early repolarization"

Dr. Smith's ECG Blog

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. CT angiogram chest: no aortic dissection or pulmonary embolism. 24 yo woman with chest pain: Is this STEMI?