Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia.1,2 Atrial flutter (AFL) is often associated with AF, and both of the conditions may occur in the same patient. The prevalence of AF/AFL has been increasing steadily over the past 20 years, and population estimates based on United States Census data estimate that 3 million cases of AF/AFL were documented in 2010 alone.3
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