1 FIMS Position Statement

Ventricular pre-excitation according to Wolff-Parkinson-White (WPW, prevalence approximately 3:1000) is characterized by the premature excitation of the ventricle by an accessory pathway (the bundle of Kent). As a consequence of the related abnormal stimulation of the ventricular myocardium, the surface ECG shows a -wave at the beginning of the QRS complex, a PQ time shortened to < 0.12 s, as well as changes in the ST-segment and the T-wave. Ventricular excitation usually occurs in combination with normal AV