OBJECTIVE To determine the approach that pediatric electrophysiologists use as they evaluate asymptomatic patients with Wolff-Parkinson-White (WPW) syndrome regarding electrophysiologic testing and radio frequency ablation. METHODS A 21-question survey was mailed to 66 pediatric electrophysiologists who had voluntarily submitted patient data at any time to the Pediatric Radio Frequency Ablati...

Background. Virtually all natural history studies ofWolff-Parkinson-White (WPW) syndrome have been case series and, as such, have been constrained by referral biases, skewed age and sex distributions, or brief follow-up periods. The purpose of our study was to examine the natural history, the development of arrhythmias, and the incidence of sudden death in an entire cohort of pediatric and adul...

OBJECTIVES The aim of this study was to assess in a large cohort of asymptomatic subjects with Wolff-Parkinson-White (WPW) pattern the usefulness of invasive electrophysiologic testing (EPT) in predicting the occurrence of arrhythmic events over a five-year follow-up. BACKGROUND Sudden death may be the first clinical manifestation of the WPW syndrome in previously asymptomatic patients. Serial ...

Background. Ebstein's anomaly is the most commonly occurring congenital abnormality associated with the Wolif-Parkinson-White (WPW) syndrome. However, the effects of Ebstein's anomaly on the risks and benefits of surgical ablation of accessory pathways in patients with WPW syndrome are unknown. Methods and Results. This study compared the long-term outcome of 38 WPW patients with Ebstein's anom...

SINCE its description as a clinical entity in 1930,1 the Wolff-Parkinson-White (WPW) syndrome has been the object of much study and speculation. The essential feature of the disorder is early anomalous activation of at least a portion of the ventricular myocardium as indicated by the "delta" deformity of the QRS complex. Shortening of the P-R segment to 0.12 second or less is accompanied by var...