Arrhythmia Atrial Flutter Blog 
Ken Grauer, MD
DECEMBER 23, 2023
By the P s, Q s, 3 R Approach ( See ECG Blog #185 ): The rhythm is fast and QRS complexes are R egular. PEARL # 4: As emphasized in ECG Blog #204 , in which I review derivation of the bundle branch blocks — RBBB is a terminal conduction delay. Figure-2: I've labeled the initial ECG in today's case.
Dr. Smith's ECG Blog
DECEMBER 24, 2023
Atrial flutter with 2:1 conduction. The atrial flutter rate is approximately 200 bpm, with 2:1 AV conduction resulting in ventricular rate almost exactly 100 bpm. Further history revealed she had new onset atrial flutter soon after her aortic surgery, and was put on flecainide approximately 1 month ago.
Ken Grauer, MD
MARCH 12, 2023
What is unusual about this arrhythmia? 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 ). PEARL # 3: Atrial Flutter with 1:1 AV conduction is rare!
Ken Grauer, MD
MARCH 23, 2023
A series of cardiac arrhythmias were seen during the course of her resuscitation — including the interesting arrhythmia shown in the long lead II of Figure-1. These are reviewed in ECG Blog #343. PEARL # 3: At this point — the most time-efficient step for solving today's rhythm will be to determine the nature of atrial activity.
Ken Grauer, MD
AUGUST 18, 2023
As always — I like to start by focusing on the long lead rhythm strip — which shows a bigeminal rhythm — in that there are repetitive 2-beat groups ( See ECG Blog #232 for review of the concept of “bigeminy” ). PEARL # 1: As discussed in ECG Blog #232 — it helps to consider the differential diagnosis of a bigeminal rhythm.
Ken Grauer, MD
MAY 12, 2023
As discussed in detail in ECG Blog #240 — the term, “SVT” — refers to any supraventricular rhythm (ie, with origin at or above the AV node ) that manifests a rate of ≥100/minute. By this definition, a variety of rhythms may qualify as “SVTs” — including sinus tachycardia, atrial flutter or fibrillation, MAT, AVRT/AVNRT, among others.
Dr. Smith's ECG Blog
NOVEMBER 26, 2018
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.
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