AVNRT occurs when a reentrant circuit is present within the AV node itself. In this situation, there are two separate conduction pathways within the AV node instead of just one (present in about 5 ...

Atrioventricular nodal reentrant tachycardia (AVNRT) is a rapid, irregular heartbeat that starts suddenly and without warning ...

Most commonly, a narrow complex tachycardia in a healthy person of abrupt onset is AVNRT (atrioventricular nodal reentry tachycardia). Alternatively, AVRT (atrioventricular reentry tachycardia ...