Atrial Fibrillation and atrial flutter (AF/FL) is the usually irregular beating of the heart and is a rapidly growing cause of hospitalization. Between 1993 to 2007 AF/FL hospitalizations have increased 203% compared to a 71% increase for all hospitalizations. Changing procedure management such as ablation, transesophageal have had a minimal impact on the trends and there is a need to evaluate Emergency Department (ED) management options of AF/FL that may decrease hospitalizations.