AI-ECG Accessory Pathway Localisation Study

Inclusion Criteria: * Referred for EPS procedure as part of their clinical care, with a finding of pre-excitation on their ECG * Manifest pre-excitation on their ECG any time prior to their procedure * Able to give consent * Minimum age 13 years old * Maximum age 100 years old Exclusion Criteria: * Unable to give consent * Adults \> 100 years old * Children \< 13 years old * Patients with known location of their accessory pathway from a previous EP study