Editorial Comment: Typical atrial flutter. What’s new?

In the current issue of the Anatolian Journal of Cardiology, the study by Erdem et al. (1) aims at determining the area of slow conduction in typical (counterclockwise) and reverse typical (clockwise) atrial flutter (AF). For this, they cleverly used the isochronal maps as retrieved from the electro-anatomical system to investigate the conduction velocities and the conducting areasi.e. surface of the areas activated at the same time-all around the tricuspid annulus. They conclude that conduction is slowing at the lower septal right atrium, while conducting areas are larger in the upper right atrium (in other words the conduction is faster in these areas) for both typical and reverse typical AF.