This paper reports a patient with Wolff-Parkinson-White syndrome who presented with a tachycardia showing an unusual QRS morphology closely resembling that of a ventricular tachycardia. On reversal to a normal rhythm the electrocardiogram showed changes of a type A preexcitation, with subsequent conversion to a type B pattern. This phenomenon was observed on two separate occasions. Such convers...

Background. A pace mapping technique using body surface potential maps (BSPMs) was developed to guide the positioning of an ablation catheter at the ventricular insertion point of accessory pathways (AP) in patients with the Wolff-Parkinson-White syndrome (WPW). Methods and Results. The study was performed on 30WPW patients. BSPMs were recorded with 63 leads distributed over the entire torso su...

This paper reports a patient with Wolff-Parkinson-White syndrome who presented with a tachycardia showing an unusual QRS morphology closely resembling that of a ventricular tachycardia. On reversal to a normal rhythm the electrocardiogram showed changes of a type A preexcitation, with subsequent conversion to a type B pattern. This phenomenon was observed on two separate occasions. Such convers...

This paper reports a patient with Wolff-Parkinson-White syndrome who presented with a tachycardia showing an unusual QRS morphology closely resembling that of a ventricular tachycardia. On reversal to a normal rhythm the electrocardiogram showed changes of a type A preexcitation, with subsequent conversion to a type B pattern. This phenomenon was observed on two separate occasions. Such convers...

This article discusses a patient with Wolff-Parkinson-White syndrome who recently underwent surgical ablation of her accessory pathway at West Virginia University Health Sciences Center. Surgical cure of this arrhythmia is possible in a high percentage of cases and should be strongly considered for those with life-threatening arrhythmias or poorly controlled symptoms.

T HE electrocardiographic pattern of short P-R interval and prolonged QRS with a normal P-S (Wolff-Parkinson-White syndrome, pre-excitation) has fascinated physicians since its description by Wolff, Parkinson, and White in 1930.1 Many theories have been advanced and numerous studies reported in an effort to explain this particular electrocardiographic pattern.2-4 Of the many concepts proposed, ...

Stein C, Damato AN: Catheter technique for recording His bundle activity in man. Circulation 39: 13, 1969 6. Denes P, Wyndham C, Amat-y-Leon F, Wu D, Dhingra R, Miller R, Rosen KM: Atrial pacing at multiple sites in WolffParkinson-White syndrome. Br Heart J 39: 506, 1977 7. Svenson RH, Gallagher JJ, Sealy WC, Wallace AG: An electrophysiological approach to the surgical treatment of the Wolff-Pa...