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ECG Blog #435 — Did Cath Show Acute Ischemia?

Ken Grauer, MD

The ECG in Figure-1 — was obtained from a middle-aged woman with positional tachycardia and diaphoresis with change of position from suprine to sitting. My THOUGHTS on the ECG in Figure-1: The rhythm is sinus tachycardia at ~105/minute ( ie, The R-R interval is regular — and just under 3 large boxes in duration ).

Blog 171
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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

She had a single chamber ICD/Pacemaker implanted several years prior due to ventricular tachycardia. Are you confident there is no ischemia? Answer : The ECG above shows a regular wide complex tachycardia. Said differently, the ECG shows a rather slow ventricular tachycardia with a 2:1 VA conduction. Is this: 1.

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Does this T wave pattern mean anything?

Dr. Smith's ECG Blog

An Initial ECG was performed: Initial ECG: Sinus tachycardia with prolonged QT interval (QTc of 534 ms by Bazett). She was admitted to the ICU where subsequent ECGs were performed: ECG at 12 hours QTc prolongation, resolution of T wave alternans ECG at 24 hours Sinus tachycardia with normalized QTc interval. No ischemic ST changes.

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Tachycardia, fever to 105, and ischemic ST Elevation -- a Bridge too Far

Dr. Smith's ECG Blog

Here was his initial ED ECG: There is sinus tachycardia at a rate of about 140 There is profound ST Elevation across all precordial leads, as well as I and aVL. I said I think there is a fixed stenosis in the LAD and the tachycardia and stress caused a type 2 STEMI.

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Wide complex tachycardia and hypotension in a 50-something with h/o cardiomyopathy -- what is it?

Dr. Smith's ECG Blog

A 50-something male with unspecified history of cardiomyopathy presented in diabetic ketoacidosis (without significant hyperkalemia) with a wide complex tachycardia and hypotension. Analysis: there is a wide complex tachycardia. This was the interpretation I put into the system: WIDE COMPLEX TACHYCARDIA. It is regular.

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Pediatric Exercise Testing

All About Cardiovascular System and Disorders

Pediatric exercise testing may be used for evaluation of various disorders of cardiac rhythm rather than for inducible ischemia as in adults. Ventricular arrhythmias during exercise can be documented in congenital long QT syndromes as well as in catecholaminergic polymorphic ventricular tachycardia.

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Abstract 4119267: Diagnosing An Uncommon Presentation of Cardiac Sarcoidosis with Isolated Bi-Atrial Involvement: A Case Report

Circulation

Stress echocardiogram ruled out myocardial ischemia. Repeat TTE and EKG then noted newly enlarged left atrium and atrial tachycardia. EKG, cardiac enzymes, and Initial echocardiogram(TTE) was unremarkable. CT scan noted mediastinal lymphadenopathy consistent with known sarcidosis.