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  • Title: [Localization of the accessory pathways using surface ECG in Wolff-Parkinson-White syndrome].
    Author: Di Biase M, Tritto M, Pitzalis MV, Favale S, Rizzon P.
    Journal: Cardiologia; 1991 Aug; 36(8 Suppl):71-4. PubMed ID: 1817774.
    Abstract:
    During recent years criteria for localization of bypass tracts in the Wolff-Parkinson-White syndrome from the conventional ECG have been acquired utilizing epicardial and endocardial mapping data. The polarity of delta wave and QRS in the frontal and horizontal plane and the morphology of retrograde P waves during orthodromic reciprocating tachycardia, are the most indicative elements. An accurate analysis of QRS complexes during atrial fibrillation confirms the site of pre-excitation and could suggest the presence of 2 or more accessory pathways with sufficient spatial separation. Some criteria for identifying multiple accessory pathways are discussed.
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