AFib can also lead to heart failure. Within the first year of diagnosis, AFib patients have a 36.7% chance of experiencing heart failure– compared to 10.4% in those without AFib.
Lee WC, Lamas GA, Balu S, et al. Direct Treatment Cost of Atrial Fibrillation in the Elderly American Population: A Medicare perspective. J Med Econ. 2008; 11(2): 281-98. http://www.ncbi.nlm.nih.gov/pubmed/19450086