TACHYCARDIA IN WOLFF-PARKINSON-WHITE-SYND ROME AND VARIANTS OF ACCESSORY AV-CONNECTIONS

With success rates of more than 90%, catheter ablation with radiofrequ ency energy is meanwhile the long-term therapy of choice in symptomati c patients with Wolff-Parkinson-White syndrome. This overview describe s the electrocardiographic characteristics of tachycardias in WPW synd rome, which lead to the correct diagnosis of the tachycardia in 80-90% of cases by analysis of the surface EGG. Due to the results of electr ophysiologic studies with catheter ablation in patients with variants of accessory pathways, the old anatomic view of Mahaim syndrome and Lo wn-Ganong-Levine syndrome had to be revised. This article summarizes t he new pathophysiological understanding of tachycardias in Mahaim synd rome and LGL syndrome.