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Atrial flutter (AFL) is a common abnormal heart rhythm that starts in the atrial chambers of the heart. [1] When it first occurs, it is usually associated with a fast heart rate and is classified as a type of supraventricular tachycardia (SVT). [2]
A resting heart rate that is too fast – above 100 beats per minute in adults – is called tachycardia, and a resting heart rate that is too slow – below 60 beats per minute – is called bradycardia. [2] Some types of arrhythmias have no symptoms. [1] Symptoms, when present, may include palpitations or feeling a pause between heartbeats. [1]
The heart has four chambers, two upper chambers—the left and right atrium, or together the atria, and two lower chambers—the left and right ventricles. Atrial flutter is used to describe when the atria contract at really high rates—about 300 beats per minute, but sometimes as high as 400 beats per minute.
Dr. Patwa says that heart palpitations are tied to the heart's electrical conduction system, a network of muscle cells in the heart’s wall that control heartbeats’ rate and rhythm. “The ...
Heart palpitations (fluttering feelings in the chest) Extreme fatigue. Fainting. Nausea. Swelling of legs, feet, ankles, abdomen, or neck veins. ... This pain may go away when you’re resting.
Resting heart rate isn’t a one-size-fits-all metric. In addition to age, factors including stress, hormones, anxiety, medication, and physical activity contribute to what may be considered a ...
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