Characterizing Dual Atrioventricular Nodal Physiology in Pediatric Patients with Atrioventricular Nodal Reentrant Tachycardia

Abstract

Neither the common definition of dual AV nodes or redefining an AH jump as some value <50 msec are reliable methods to define dual AV nodes or to predict AVNRT in pediatric patients. PR > or = RR is a relatively good predictor of AVNRT.

Radiofrequency Ablation of Pediatric AV Nodal Reentrant Tachycardia during the Ice Age: A Single Center Experience in the Cryoablation Era

“…Additionally, the presence of dual AV node physiology is often not present in pediatric patients with AVNRT. 12 The response of junctional acceleration during a radiofrequency lesion provides an additional method of identifying a successful lesion. 13 This response does not occur during cryoablation lesions.…”

Sustained Slow Pathway Conduction: Superior to Dual Atrioventricular Node Physiology in Young Patients with Atrioventricular Nodal Reentry Tachycardia?

“…Use of a less stringent criterion to define DAVNP might be appropriate in children 16 . Recent data in another cohort of pediatric patients with AVNRT reveal DAVNP in 51%, and an AH “jump” between 30 and 49 ms in 37% 17 . However, 12% had continuous AV conduction curves, suggesting that no single threshold for change in A2H2 interval will define all patients with the substrate for AVNRT.…”

The Specific Electrophysiologic Characteristics in Children with the Atypical Forms of Atrioventricular Nodal Reentrant Tachycardia

“…Previous studies demonstrated that SSPC during atrial pacing is a good marker for the diagnosis of AVNRT and a useful surrogate endpoint for slow pathway ablation [18, 19]. In the present study, only patients with the slow-fast form of AVNRT were demonstrated to have SSPC during atrial pacing.…”