When your heart beats too quickly, your heart ventricles can’t fill with blood.The fast pulse from atrial flutter can weaken your heart muscle.Blood clots could form, which could cause a stroke or heart attack.When you have atrial flutter, your heart isn’t working as efficiently as it should. Atypical (not common unless you’ve had heart surgery or ablations before): Abnormal electrical signals can happen in your left or right atrium.Ī provider can tell which type of atrial flutter you have based on your electrocardiogram (EKG) results.Reverse typical: Abnormal electrical signals move in a clockwise direction in your right atrium.Typical (most common type): Abnormal electrical signals go in a counterclockwise circle in your right atrium.This causes your heart to pump less blood to your body than normal. Also, there isn’t enough time for your atria (upper chambers) to empty all their blood into your ventricles in the lower part of your heart. Your heart’s chambers can’t fill with blood fast enough because the contractions are too frequent. This causes your lower chambers to beat fast as a response, commonly as fast as 150 beats a minute or more.Ītrial flutter is like an assembly line with the speed set too fast at the line’s first station. Atrial flutter can make your heart’s upper chambers beat 250 to 350 times a minute. With atrial flutter, your heart beats in a fast but consistent pattern.Ī normal heart rate is 60 to 100 beats a minute when you’re at rest. This means it’s an abnormal heart rhythm that starts in the upper chambers of your heart. Atrial flutter is a type of supraventricular arrhythmia.
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