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He has a history of STEMI and heart failure. The only alternative is old inferior MI with persistent ST-Elevation, or inferior aneurysm morphology. Inferior Aneurysm morphology is incredibly hard to differentiate from Acute OMI, but you should suspect it whenever there are well-formed inferior Q-waves. He had a prehospital ECG.
A male in his 40's who had been discharged 6 hours prior after stenting of an inferoposterior STEMI had sudden severe SOB at home 2 hours prior to calling 911. Is this acute STEMI? Is this an acute STEMI? -- Unlikely! He had no chest pain. Medications were aspirin, clopidogrel, metoprolol, and simvastatin.
He was rushed by residents into our critical care room with a diagnosis of STEMI, and they handed me this ECG: There is sinus tachycardia with ST elevation in II, III, and aVF, as well as V4-V6. At first glance, it seems the patient is having a STEMI. ACS and STEMI generally do not cause tachycardia unless there is cardiogenic shock.
This is a 45 yo male who had an inferior STEMI 6 months prior, was found to have severe LAD and left main disease, and was supposed to be set up for CABG a few weeks later, but did not follow up. But it could be anterior STEMI. 40% of anterior STEMI has upward concavity in all of leads V2-V6. is likely anterior STEMI).
Thus, this is BOTH an anterior and inferior STEMI in the setting of RBBB. How old is this antero-inferior STEMI? Although acute anterior STEMI frequently has narrow QR-waves within one hour of onset (1. the presence of such well developed, wide, anterior Q-wave suggests completed transmural STEMI. Could it be acute (vs.
A prehospital “STEMI” activation was called on a 75 year old male ( Patient 1 ) with a history of hyperlipidemia and LAD and Cx OMI with stent placement. The EKG is diagnostic of acute inferior, posterior, and lateral OMI superimposed on “LV aneurysm” morphology. He wrote most of it and I (Smith) edited.
Only very slight STE which does not meet STEMI criteria at this time. I am immediately worried that this OMI will not be understood, for many reasons including lack of sufficient STE for STEMI criteria, as well as the common misunderstanding of "no reciprocal findings" which is very common with this particular pattern. 6.5 = 0.38.
would require the ST/S ratio to be 25% for diagnosis of STEMI in LVH. The physician was concerned about STEMI, but also worried that she was overreacting, with the potential that LVH was producing a "STEMI-mimic." No prior echocardiogram was available for comparison. Can you diagnose an ACO (STEMI) when you also have LVH?
But the well-formed Q-wave and the presence of a normal T-wave in inferior leads led me to believe this was Old Inferior MI with persistent ST Elevation, otherwise known as inferior LV aneurysm. Anterior LV aneurysm is much easier to recognize because the Q-wave is usually a QS-wave (no R-wave at all), in at least one lead.
Despite ongoing chest discomfort and an uptrending troponin, he never meets STEMI criteria. No further echocardiograms were available after cath. The full thickness infarction with LV aneurysm morphology places him at a higher risk for short and long term complications (e.g., Teaching points: 1.
Not quite a STEMI, but same effect.) There is ST elevation in V2-V4 that does not quite meet "STEMI criteria." You might think it is "Old MI with persistent ST Elevation" (otherwise known as "LV aneurysm" morphology.") Is this a transient STEMI? When Q-waves have developed, it cannot be assumed to be a transient STEMI.
Next day echocardiogram showed inferolateral hypokinesia with an EF of %45-50. On echocardiogram you will not see a "posterior" hypokinesia (will see "inferolateral") and, as in this case, LCx may not give the blood supply of basal inferior segment (formerly called "posterior"). The patient recovered well.
There are no Q-waves to suggest old inferior MI, or inferior aneurysm as the etiology of the ST Elevation. Supply-demand mismatch can cause ST Elevation (Type 2 STEMI). Also see these posts of Type II STEMI. Truly, the Marquette 12 SL algorithm correctly identifies this STEMI. See reference and discussion below.
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