Bradycardia-dependent block in the accessory pathway in a patient with alternans Wolff-Parkinson-White syndrome From: Journal of Electrocardiology | Date: October 1, 2006| Author: Benezet-, Juan; ¡ n; Ortega-Carnicer, Julià | Copyright Churchill Livingstone Inc., Medical Publishers Oct 2006. Provided by ProQuest LLC.Copyright information

Although the intermittent preexcitation in the WoIfFParkinson-White (WPW) syndrome is a well-known phenomenon manifested by abrupt loss of delta wave from 1 beat to the next on the electrocardiogram (ECG),1'2 the occurrence of WPW syndrome on alternate beats during regular cardiac rhythm has been observed occasionally on rhythm strips.3"5 We report a case of probable bradycardiadependent block in the accessory pathway in a patient with alternans WPW syndrome during regular sinus rhythm.

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