Does Eliminating Coffee Avoid Fibrillation?

The purpose of this study is to assess how abstinence of coffee compared to continued consumption affects recurrent atrial fibrillation (AF) following cardioversion. As one of the most consumed beverages in the world, whether coffee has any effect on health outcomes is of considerable interest to physicians, scientists, and individual consumers. While significant data exist on the potential impact of coffee on many cardiometabolic parameters, there is conflicting data on any role of coffee on AF. Most studies so far have been observational in nature, limiting how much insight there is on the role of coffee on AF. This study proposes to directly compare AF outcomes for patients with AF that abstain from coffee versus those that continue coffee consumption. A total of 200 AF patients undergoing cardioversion will be enrolled in this study (100 per arm), and followed for up to 6 months post cardioversion. Differences in AF recurrence and symptoms will be compared between the two groups.