Revista argentina de cardiología
versión On-line ISSN 1850-3748
ALBINO, Ernesto et al. Supernormal Conductivity of Accessory Atrioventricular Pathways in Wolff-Parkinson White Syndrome: an Overlooked Electrophysiologic Feature With a Potential Prognostic Impact. Rev. argent. cardiol. [online]. 2005, vol.73, n.5, pp. 370-377. ISSN 1850-3748.
The duration of the anterograde refractory period through anomalous conduction pathways is decisive in determining the ventricular response and the potential risk of ventricular fibrillation in patients with Wolff-Parkinson-White syndrome. An exhaustive exploration of refractoriness by means of programmed auricular stimulation may reveal the presence of supernormal conductivity in AV accessory pathways during a brief early period of the cardiac cycle, allowing for high ventricular frequencies even with a prolonged refractory period of the anomalous pathway or when anterograde conduction seems abolished. This article reviews several examples of supernormal conductivity through anomalous pathways in order to highlight its potential clinical relevance in patients with ventricular preexcitation.
Palabras clave : Wolff Parkinson White syndrome; Supernormal conductivity; Programmed auricular stimulation.