[Intracoronary adenosine induced-atrial fibrillation during fractional flow reserve evaluation].

Fractional flow reserve (FFR) measurement for functional evaluation of haemodynamic relevance of coronary artery stenoses is a well established and straightforward method applied on daily basis in cardiac catheterization laboratory; it is known to be reliable, reproducible and secure associated with a low rate of adverse events. We report the case of a 68-year-old man with no history of arrhythmias in whom intracoronary injection of adenosine for FFR assessment immediately induced atrial fibrillation mandating hospitalization for pharmacological cardioversion.