Atrial flutter and atrial fibrillation (AFib) both occur when the electrical signals that make your heart chambers contract occur faster than typical. However, they differ in the organization of ...

When your electrical system is working normally, the two upper chambers of the heart (atria) contract and pump blood into the two lower chambers (ventricles) in a well-coordinated way. This results in ...

Atrial flutter occurs when a “reentrant” circuit is present, causing a repeated loop of electrical activity to depolarize the atrium at a rate of about 250 to 350 beats per minute; the atrial rate in ...

This tracing shows regular narrow QRS tachycardia at 150 bpm. In leads I and aVL, 2 atrial deflections (↓) are evident that occur regularly at 300 bpm. Regular atrial rhythm at this rate, or close to ...

Atrial flutter is an abnormal heart rhythm where the upper heart chambers beat too fast, reducing the heart’s ability to pump blood effectively and potentially leading to heart muscle damage, stroke, ...

The QRSs are narrow and do not occur regularly but have a pattern: short-long-long, short-long-long...., thereby ruling out atrial fibrillation. In the lead II rhythm strip, the baseline continuously ...