The normal heart rate is 60 to 100 beats per minute. In atrial fibrillation or flutter, the heart rate may be 100 to 175 beats per minute . Blood pressure may be normal or low. An ECG (a test that records the electrical activity of the heart) may show atrial fibrillation or atrial flutter.
Read moreWhat is an atypical atrial flutter?
The definition of atypical atrial flutter includes a broad spectrum of other macroreentrant tachycardias in which the wave front does not travel around the tricuspid annulus .6 Mar 2013
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