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Arrhythmia? Ischemia? Both? Electricity, drugs, lytics, cath lab? You decide.

Dr. Smith's ECG Blog

The rhythm differential for narrow, regular, and tachycardic is sinus rhythm, SVT (encompassing AVNRT, AVRT, atrial tach, etc), and atrial flutter (another supraventricular rhythm which is usually considered separately from SVTs). Therefore this patient is either in some form of SVT or atrial flutter. If so, why?

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Wide-complex tachycardia that didn’t follow the rules

Dr. Smith's ECG Blog

They had a history of non-ischemic cardiomyopathy (EF 30%), as well as PCI with one stent. The WCT is interrupted by a series of variable-morphology QRS complexes, with atrial flutter waves note in II, III, and aVF. The subsequent EP study could not induce VT, only atrial fibrillation.

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A fascinating electrophysiology case. What is this wide complex tachycardia, and how best to manage it?

Dr. Smith's ECG Blog

The patient is female in her 80s with a medical hx of previous MI with PCI and stent placement. She also has a hx of paroxysmal atrial fibrillation and is on oral anticoagulant treatment. The ECG was interpreted as showing atrial flutter with 2:1 conduction. The last echocardiography 12 months ago showed HFmrEF.

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A man in his 70s with acute chest pain and paced rhythm.

Dr. Smith's ECG Blog

LAFB, atrial flutter, anterolateral STEMI(+) OMI. So the patient was taken for emergent cath, showing: Culprit artery: LAD (100% stenosis, TIMI 0) requiring thrombectomy and stent. South African flag pattern, plus precordial swirl pattern. Queen of Hearts interpretation: Now the cardiologist considered it "STEMI"!