Key result
Adolescents with DAVN physiology and AVNRT had a significantly longer fast pathway effective refractory period compared to children (median 375 vs 270 ms, P=0.03).
Why the study?
Do electrophysiological responses to programmed stimulation differ between children and adolescents with dual AV nodal physiology and AVNRT?
Population
14 pediatric patients who underwent intracardiac electrophysiological study prior to radiofrequency catheter…
Comparison
Intracardiac electrophysiological study with… vs Children compared to adolescents
Design
Cross-sectional
Authors
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May guide age-adjusted EP protocols in pediatric AVNRT; leaves open whether differences inform ablation timing or outcomes.
Observational (n=14)
Do electrophysiological responses to programmed stimulation differ between children and adolescents with dual AV nodal physiology and AVNRT?
Absolute Event Rate: 375% vs 270%
p-value: p=0.03
Age-related differences in AV nodal electrophysiology, such as longer refractory periods and cycle lengths in adolescents, may explain the increased incidence of AVNRT in older pediatric patients.
Blaufox et al. (2000) conducted an observational in Dual atrioventricular nodal (DAVN) physiology and AVNRT (n=14). Adolescence vs. Children was evaluated on Fast pathway effective refractory period (ERP) (p=0.03). Adolescents with DAVN physiology and AVNRT had a significantly longer fast pathway effective refractory period compared to children (median 375 vs 270 ms, P=0.03).
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