Arrhythmia Cardiac Arrest Pacemaker 
Dr. Smith's ECG Blog
APRIL 29, 2020
A 60-something woman presented after a witnessed cardiac arrest. This is commonly found after epinephrine for cardiac arrest, but could have been pre-existing and a possible contributing factor to cardiac arrest. Final Diagnosis: Cardiac Arrest due to Torsades from long QT of unknown etiology.
Dr. Smith's ECG Blog
JANUARY 2, 2025
See this post: How a pause can cause cardiac arrest 2. Place temporary pacemaker 3. In this specific case, Left Bundle Branch (LBB) area pacing was pursued to achieve cardiac resynchronization. The plan: 1. Discontinue all negative chronotropic agents, since the risk of torsade is much higher with bradycardia or pauses.
Dr. Smith's ECG Blog
OCTOBER 8, 2024
Click here to sign up for Queen of Hearts Access Here is the cardiologist's formal interpretation : "sinus rhythm with marked sinus arrhythmia, left ventricular hypertrophy with repolarization abnormality, and anteroseptal infarct, age undetermined." About 45 minutes after the second EKG, the patient was found in cardiac arrest.
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. T-wave alternans and the susceptibility to ventricular arrhythmias. Teaching Points: 1. 2017.3191.
Ken Grauer, MD
JULY 9, 2023
Blood was drawn , and the patient was promptly placed in a room to be seen — but on entering, the ED physician found her unresponsive in cardiac arrest. Do you see any indication on this ECG of WHY this patient was about to arrest? Is there any indication on this ECG of WHY this patient shortly after had a cardiac arrest?
Ken Grauer, MD
OCTOBER 27, 2023
My Immediate Impression — was that this elderly woman with a several week history of symptoms would most likely leave the hospital with a pacemaker. Given this patient's older age — if nothing "fixable" is found, she most likely has SSS ( S ick S inus S yndrome ) and will need a pacemaker ( See ECG Blog #342 for more on SSS ).
Dr. Smith's ECG Blog
MAY 5, 2023
My thoughts were the following: ECGs #1 and #2 showed a completely unreliable sinus pacemaker, with presumed high-grade 2nd-degree AV block — and frequent resultant pauses of over 2 seconds ( that would have been even longer had it not been for intermittent relief from the atrial escape focus ). What Does this All Mean?
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