Accessory Pathway Localization by QRS Polarity in Children with Wolff‐Parkinson‐White Syndrome

AP Localization by QRS Polarity in Children. Introductions: Location of the accessory pathway (AP) in Wolff‐Parkinson‐White (WPW) syndrome can be determined accurately by the QRS polarity on resting ECG. These ECG characteristics may be different in children, and no algorithm has yet been tested.