Atrial Fibrillation Cardiac Arrest Ischemia 
Dr. Smith's ECG Blog
APRIL 24, 2015
Here was his initial ED ECG: There is atrial fibrillation with a rapid ventricular response. ST depression is common BOTH after resuscitation from cardiac arrest and during atrial fib with RVR. and repeat the ECG, to see if the apparent ischemia persists. He had a history of CAD with CABG. This was done.
Dr. Smith's ECG Blog
OCTOBER 28, 2013
The patient had a combined respiratory and metabolic acidosis (as we commonly find in those with prolonged arrest), and a K of 4.1, The rhythm is nearly regular, but there are no P-waves (it is too regular to be atrial fibrillation). Was this: 1) ACS with ischemia and spontaneous reperfusion? at the time of the ECG.
Dr. Smith's ECG Blog
FEBRUARY 2, 2024
Written by Pendell Meyers First try to interpret this ECG with no clinical context: The ECG shows an irregularly irregular rhythm, therefore almost certainly atrial fibrillation. After an initially narrow QRS, there is a very large abnormal extra wave at the end of the QRS complex. There is also large T wave inversion and long QT.
Dr. Smith's ECG Blog
OCTOBER 23, 2023
Edited by Bracey, Meyers, Grauer, and Smith A 50-something-year-old female with a history of an unknown personality disorder and alcohol use disorder arrived via EMS following cardiac arrest with return of spontaneous circulation. Cardiac Motion Alternans — is the result of cardiac movement rather than electrical alternation.
Dr. Smith's ECG Blog
NOVEMBER 4, 2022
Case submitted and written by Mazen El-Baba MD, with edits from Jesse McLaren and edits/comments by Smith and Grauer A 90-year old with a past medical history of atrial fibrillation, type-2 diabetes, hypertension, dyslipidemia, presented with acute onset chest/epigastric pain, nausea, and vomiting. Anything more on history?
Dr. Smith's ECG Blog
NOVEMBER 28, 2022
Alternation in ST segment appearance ( or in the amount of ST elevation or depression ) — is often linked to ischemia. Conduction and refractoriness alternans may be seen with WPW-related as well as AV Nodal-dependent reentr y tachycardias — atrial fibrillation — acute pulmonary embolus — myocardial contusion — and severe LV dysfunction.
Dr. Smith's ECG Blog
OCTOBER 10, 2022
The rhythm is atrial fibrillation. In terms of ischemia, there is both a signal of subendocardial ischemia (STD max in V5-V6 with reciprocal STE in aVR) AND a signal of transmural infarction of the inferior wall with Q wave and STE in lead III with reciprocal STD in I and aVL. The QRS complex is within normal limits.
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