Atrioventricular reentrant tachycardia (AVRT) is a type of supraventricular tachycardia characterized by a reentrant circuit involving the atrioventricular (AV) node and an accessory pathway. It is clinically significant as it can lead to rapid heart rates, potentially causing symptoms like palpitations, dizziness, or syncope, and may require urgent management. A common example of AVRT is Wolff-Parkinson-White syndrome, where the presence of an accessory pathway predisposes patients to this arrhythmia.
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