Definition: rapid regular atrial contractions occurring usually at rates between 250 and 330 per minute (Type I atrial flutter) and often producing “sawtooth” waves in the electrocardiogram, particularly leads II, III, and aVF. Type II atrial flutter is at rates of 330–450 per minute. Unlike Type I, it cannot be terminated by overdrive pacing.
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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.