title: Classification of electrophysiological types of atrioventricular nodal re-entrant tachycardia: a reappraisal.
abstract: Sequence of retrograde atrial activation is not a reliable criterion for the classification of atrioventricular nodal re-entrant tachycardia (AVNRT) into typical and atypical types. The conventional concept of a lower common pathway is not supported by current evidence and does not represent a reliable or reproducible criterion. The distinction between 'fast-slow' and 'slow-slow' forms is not unanimously defined, and probably of no practical significance. We suggest that AVNRT should be classified as typical or atypical according to the His-atrial interval or, when a His bundle electrogram is not reliably recorded, the ventriculo-atrial interval measured on the His bundle recording electrode.
authors.affiliation: Athens Euroclinic, 9 Athanassiadou Street, Athens 11521, Greece. dkatritsis@euroclinic.gr
authors.forename: Demosthenes G
authors.initials: DG
authors.lastname: Katritsis
authors.forename: Mark E
authors.initials: ME
authors.lastname: Josephson
mesh_terms: D004562:Electrocardiography / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013611:Tachycardia, Atrioventricular Nodal Reentry / Q000145:classification* / Q000175:diagnosis*
keywords: Atrioventricular nodal re-entrant tachycardia; Classification of; Lower common pathway