AFIB Article Blog 
Ken Grauer, MD
MAY 31, 2024
PEARL # 1: As I emphasize in ECG Blog #148 ( from where I took the tracing I show in Figure-3 ) — the BEST way to prove artifact — is to recognize persistence of an underlying spontaneous rhythm that is unaffected by any erratic or suspicious deflections that are seen. Figure-3: I've reproduced this tracing from ECG Blog #148 ( See text ). =
Ken Grauer, MD
MARCH 12, 2023
NOTE: The ECG in Figure-1 has been recorded at the usual 25mm/second speed — but with the Cabrera format ( Please see my Editorial Note near the top of the page in ECG Blog #365 for review of the basics of this recording system ). Among the fast Supraventricular Rhythms: This is not AFib — because the rhythm is regular.
Dr. Smith's ECG Blog
MARCH 7, 2024
This does NOT seem irregularly irregular enough for AFib … Instead — there is almost “group beating” with “Wenckebach periodicity”. Here the full text of the article: Accelerated Idioventricular Rhythm: History and Chronology of the Main Discoveries
Dr. Smith's ECG Blog
DECEMBER 13, 2024
NOTE: The ECGs in today's case are recorded in the Cabrera Format ( See Dr. Grauer Comment in the October 26, 2020 post of Dr. Smith's ECG Blog for review on the Cabrera Format ). KEY Point: Nothing other than AFib with WPW results in a ventricular response this fast ( which is why Figure-2 is pathognomonic for AFib in a patient with WPW ).
Dr. Smith's ECG Blog
FEBRUARY 18, 2024
As I discussed in detail in My Comment at the bottom of the page in the January 13, 2024 post in Dr. Smith's ECG Blog — pacemaker spikes tend to be a high frequency signal. The April 6, 2023 post — excessive baseline artifact misdiagnosed as AFib ( instead of sinus rhythm with AV Wenckebach — as in Figure-4 in this post ).
Dr. Smith's ECG Blog
JUNE 14, 2024
. == Links to Examples of ARTIFACT: What follows below is an expanding list of technical "misadventures" — most from Dr. Smith's ECG Blog — some from other sources ( NOTE: As I did not previously keep track of these — there are additional examples of artifact sprinkled through Dr. Smith's ECG Blog that I have not yet included here. ).
Dr. Smith's ECG Blog
MARCH 15, 2023
Ibutilide can convert atrial fib, or if the atrial fib is resistant to electrical cardioversion, ibutilide can facilitate electrical cardioversion (see my description of the New England Journal article below). I focus my comment on a few additional aspects regarding new AFib. Here is the ECG after ibutilide: What do you notice?
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