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Atrial flutter is an abnormal cardiac rhythm characterized by rapid, regular atrial depolarizations at a characteristic rate of approximately 300 beats/min and a regular ventricular rate of about 150 beats/min in patients not taking atrioventricular (AV) nodal blockers. It can lead to symptoms of palpitations, shortness of breath, fatigue, or lightheadedness, as well as an increased risk of atrial thrombus formation that may cause cerebral and/or systemic embolization. Atrial flutter occurs in many of the same situations as atrial fibrillation, which is much more common.
Atrial flutter is similar to atrial fibrillation, a common heart rhythm disorder. However, the rhythm in your atria is more organized and less chaotic in atrial flutter than are the abnormal patterns common with atrial fibrillation. Sometimes you may have periods of both atrial flutter and atrial fibrillation.
We estimated that at 30 June 2014 there would be 328 562 cases of AF among people aged ≥ 55 years, comprising 174 986 men and 153 576 women . Without significant changes to the natural history of AF, by 2034 this figure is projected to rise to over 600 000, with a prevalence of 7.22% among menand 5.64%among women.We also predicted that between 2014 and 2034 the number of AF cases would double among older age groups and would increase 2.5-fold among men aged ≥ 85 years .