AV nodal reentrant tachycardia. Diagnosis and therapy

The AV nodal reentrant tachycardia (AVNRT) is one of the most common arrhythmias en- countered in clinical practice. It is character- ized by a constant heart rate and an on/off phenomenon. The clinical symptoms may in- clude palpitations, anxiety, polyuria, and dys- pnea. Typically, tachycardia may be disrupted by vagal maneuvers in many patients. First- line treatment of symptomatic AVNRT is ra- diofrequency ablation. The present article deals with the characteristics, differential di- agnosis and treatment of AVNRT in the EP lab. It is the second part of a series of manuscripts which may facilitate further education in the specific field of electrophysiology.