Inaccuracy of Wolff‐Parkinson‐White Accessory Pathway Localization Algorithms in Children and Patients with Congenital Heart Defects

Introduction: ECG algorithms used to localize accessory pathways (AP) in patients with Wolff‐Parkinson‐White (WPW) syndrome have been validated in adults, but less is known of their use in children, especially in patients with congenital heart disease (CHD). We hypothesize that these algorithms have low diagnostic accuracy in children and even lower in those with CHD. Methods: Pre‐excited ECGs in 43 patients with WPW and CHD (median age 5.4...