Abstract
Dual atrioventricular (AV) nodal physiology is defined in the literature by a ≥50 msec increase in the AH interval with a 10 msec decrement in the premature stimulus. Recent studies have reported only 50% of pediatric patients with atrioventricular nodal reentrant tachycardia(AVNRT) demonstrate a true AH jump. We sought to further characterize the pediatric population by comparing younger versus older children <18 years of age.
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