Atrial Flutter Exercise Tachycardia 
Dr. Smith's ECG Blog
JULY 17, 2023
There is a regular narrow complex tachycardia. Thus, it is supraventricular tachycardia. It is important to remember that SVT includes Sinus Tachycardia! Sometimes even Wide Complex Tachycardia is Sinus. See this case in which Lewis leads were necessary to figure this out: Wide Complex Tachycardia.
Dr. Smith's ECG Blog
SEPTEMBER 18, 2024
This strip was obtained: Apparent Wide Complex Tachycardia at a rate of 280 What do you think? To me, it was clearly atrial flutter with 1:1 conduction. The rate of 280 is just right for atrial flutter. The waves look like atrial flutter waves, NOT like a wide ventricular complex.
Dr. Smith's ECG Blog
DECEMBER 23, 2019
Initial ECG in the ED: Presenting ECG : Wide-complex tachycardia at a rate about 200. This is overwhelmingly likely to be ventricular tachycardia, even if only age and medical history are considered. Nevertheless, the widths of both the QRS complex and the RS duration are similar in both the old ECG and the tachycardia.
Cardiomatics
APRIL 5, 2024
Sinus tachycardia – sinus rhythm above 100 bpm is a sinus tachycardia. In healthy individuals occurs during exercising or strong emotions. Ventricular tachycardia – more than 7 consecutive complexes originating from ventricles at a rate of > 100 bpm. Usually does not exceed 160 bpm.
Dr. Smith's ECG Blog
SEPTEMBER 7, 2020
Here is his 12-lead: There is a wide complex tachycardia with a rate of 257, with RBBB and LPFB (right axis deviation) morphology. Read about Fascicular VT here: Idiopathic Ventricular Tachycardias for the EM Physician Case Continued He was completely stable, so adenosine was administered. See Learning point 1 below. Arch Intern Med.
Dr. Smith's ECG Blog
FEBRUARY 6, 2025
Previously healthy, taking no medication and exercising regularly. No anginal symptoms asymptomatic during physical exercise. During observation in the ED the patient had multiple self-terminating runs of Non-Sustained monomorphic Ventricular Tachycardia (NSVT). Below in Figure-1 is this patient's admission ECG.
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