A case of Wolff-Parkinson-White syndrome in which two-dimensional speckle-tracking echocardiography was useful for identifying the location of the accessory atrioventricular pathway.

Various echocardiographic techniques have been investigated as non-invasive alternatives for AP localization. Longitudinal 2D-STE accurately identified contractile abnormalities associated with the AP, allowing us to non-invasively estimate the localization of the AP in WPW syndrome.