What is AVNRT?

What is AVNRT?

Atrioventricular nodal reentrant tachycardia (AVNRT) is the most common kind of supraventricular tachycardia (SVT) due to an extra electrical pathway. SVT is a heart condition that makes the heart suddenly beat much faster than normal.

A normal heartbeat is about 60 to 100 beats per minute when a person is at rest. But a person with AVNRT experiences sudden episodes of an abnormally fast heartbeat, often 140 to 280 beats per minute.

AVNRT and SVT are types of arrhythmias, which is any type of irregular or abnormal heartbeat.