It would have been interesting to include the presence of hypertension, cigarette smoking, and echocardiographic parameters such as the left atrial diameter among the studied risk factors of stroke in order to provide a more complete risk profile. We have excluded patients with anterograde pathway and reentrant tachycardias. The relationship between AF and anterograde pathway is well known with a direct role of this conduction in the induction of AF. A recent work of our group has reported the data of these patients.24 This population is younger than patients with AVNRT and at low risk of stroke