Simple electrocardiography algorithm for localizing accessory pathway in patients with Wolff-Parkinson-White syndrome.

Background: Existing algorithms to predict the location of an accessory pathway (AP) in Wolff-Parkinson-White Syndrome (WPW) have good sensitivity and specificity but complex with various accuracy and inter-observer agreement rates. A simple algorithm with high accuracy and inter-observer agreement rates is needed.

Methods: This was a cross-sectional and retrospective diagnostic study.