Arrhythmia Atrial Flutter Physiology 
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.
Cardiomatics
APRIL 5, 2024
Then, the current flows to an area known as the bundle of His, which divides into two branches (LBB and RBB) and is the only physiological pathway connecting the atria with the ventricles. AFIB/AFL – atrial fibrillation or atrial flutter episodes. The left bundle and right bundle terminate in the Purkinje fibers.
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.
Circulation
NOVEMBER 11, 2024
Atrial Tachycardia (70%) and Typical Atrial Flutter (65%) were the most common SVTs ablated. This study underscores the need for risk stratification in patients with Fontan physiology undergoing SVT ablation and informs future research directions for enhancing ablation outcomes.
Ken Grauer, MD
DECEMBER 23, 2023
Since the most common ventricular response to untreated AFlutter is with 2:1 AV conduction — this results in a ventricular rate HALF as fast as the flutter rate in the atria — and 300 ÷ 2 ~150/minute ( usual range ~130-170/minute ). I suspected some type of lead connection "technical misadventure".
Dr. Smith's ECG Blog
JANUARY 9, 2024
The ECG was interpreted as showing atrial flutter with 2:1 conduction. The heart rate could be compatible with that of a 2:1 conducted atrial flutter. Also, lead I could give the initial impression of showing flutter waves. The patient’s own underlying atrial rhythm is revealed at a heart rate in the mid 50s.
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. PEARL # 3: At this point — the most time-efficient step for solving today's rhythm will be to determine the nature of atrial activity.
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