In atrial flutter, the atrial rate varies between 200-350 bpm. The ventricular rate, based on the conduction rate, is approximately 100 bpm.
Although atrial rhythm is regular, ventricular rate may be irregular in individuals with atrial flutter.
In atrial flutter, the presence of multiple P waves before every QRS creates a saw tooth-shaped pattern. The flutter waves represent atrial depolarization and repolarization.
In atrial flutter, the PR intervals are variable and non-measurable.
Like normal sinus rhythm, the QRS interval of individuals with atrial flutter is less than 0.12 seconds.
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