3 doctors weighed in:

What's the difference between atrial flutter and svt- and can they happen at the same time?

3 doctors weighed in
David Miller
Family Medicine
1 doctor agrees

In brief: Similar-different

Both originate with the "pace-maker" in the right atrium. In svt, it leads to a sinus rhythm over 100-140 beats per min (bpm).
Atrial flutter is a specific type of svt that causes (by definition) an atrial rate of around 300 bpm. Depending on the electrical conduction of that heart, it will lead to a ventricular rate of some multiple of 300 (150, 100, 75, etc).

In brief: Similar-different

Both originate with the "pace-maker" in the right atrium. In svt, it leads to a sinus rhythm over 100-140 beats per min (bpm).
Atrial flutter is a specific type of svt that causes (by definition) an atrial rate of around 300 bpm. Depending on the electrical conduction of that heart, it will lead to a ventricular rate of some multiple of 300 (150, 100, 75, etc).
David Miller
David Miller
Answer assisted by David Miller, Medical Student
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Dr. Diana Metzger
Internal Medicine - Cardiology

In brief: More specific

Svt stands for supraventricular tachycardia, or a fast heartbeat coming from the top part of the heart.
There are many fast rhythms coming from the top of the heart: atrial tachycardia, atrial fibrillation, junctional tachycardia, and psvt (paroxyxmal svt)... Atrial flutter is one of these rhythms, and is characterized by a regular, rapid rate of the atrium typically between 290 and 310 bpm.

In brief: More specific

Svt stands for supraventricular tachycardia, or a fast heartbeat coming from the top part of the heart.
There are many fast rhythms coming from the top of the heart: atrial tachycardia, atrial fibrillation, junctional tachycardia, and psvt (paroxyxmal svt)... Atrial flutter is one of these rhythms, and is characterized by a regular, rapid rate of the atrium typically between 290 and 310 bpm.
Dr. Diana Metzger
Dr. Diana Metzger
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