April 23, 2013EP Europace105 citationsOpen Access
Classification of electrophysiological types of atrioventricular nodal re-entrant tachycardia: a reappraisal
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Key Result
The His-atrial or ventriculo-atrial interval should replace retrograde atrial activation as the primary criterion to classify atrioventricular nodal re-entrant tachycardia.
Structured PICO
Should AVNRT be classified based on His-atrial or ventriculo-atrial intervals rather than retrograde atrial activation sequence?
P
Population
Patients with atrioventricular nodal re-entrant tachycardia (AVNRT)
I
Intervention
Classification of AVNRT according to the His-atrial interval or ventriculo-atrial interval measured on the His bundle recording electrode
C
Comparator
Conventional classification based on sequence of retrograde atrial activation or lower common pathway
O
Outcome
Reliable classification of typical vs atypical AVNRT
Proposes a simplified and more reliable classification scheme for AVNRT based on His-atrial or ventriculo-atrial intervals rather than retrograde atrial activation.
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.
Cite This Study
Katritsis et al. (2013) studied this question. The His-atrial or ventriculo-atrial interval should replace retrograde atrial activation as the primary criterion to classify atrioventricular nodal re-entrant tachycardia.