50 is the new 70: Short ventriculoatrial times are common in children with atrioventricular reciprocating tachycardia

Children with AVRT can frequently have VA times <70 ms, with 50 ms being the shortest VA time. This finding debunks the classic electrophysiology principle that VA times in AVRT must be >70 ms. SHORT-VA AVRT was more common in children with left-sided APs.