Pathway Characteristics
We identified 43 accessory pathway connections in the 39 patients. Three patients (8%) had multiple accessory pathways. The classification used for accessory pathway localisation was from the Working Group of Arrhythmias from the Cardiac Nomenclature Study Group (12) (Figure I). The accessory pathways’ characteristics are summarized in Table 1 . The initial ablation failed in 7 patients (18%), 70% (n=5) in an external institution.