AVRT is more likely to happen when you're a child or teenager. It doesn't mean you have other heart problems. ... That's called an accessory pathway (AP) or bypass tract.

If an action potential is able to traverse the accessory pathway and then return retrograde through the AV node ― or vice versa ― a reentrant circuit can be created, resulting in AVRT ...

Figure 1. "His synchronous PVC" delivered during SVT: AVRT over a septal pathway (tachycardia cycle length 275 ms). A PVC delivered during His refractoriness advances the timing of atrial ...

In patients with AVRT, the tachycardia involves both the AV node and an extranodal accessory pathway (bypass tract) that connects the myocardium of the atrium to the ventricle.10 In AVRT with a narrow ...

Atrioventricular reentry tachycardia (AVRT) requiring an accessory atrioventricular pathway (AP) is the most common type of arrhythmia in the perinatal period. The etiology of these arrhythmias is ...

The key difference is that AVRT is due to an additional pathway that can lead to irregular heart rhythms. An electrocardiogram (ECG) can help doctors differentiate between the two.

Atrioventricular nodal reentrant tachycardia is the most common form of paroxysmal supraventricular tachycardia, or PSVT, in adults. AVNRT occurs when a reentrant circuit is present within the AV ...