Atrioventricular Nodal Re-Entrant Tachycardia And Advances Of Its Treatment Of Catheter Ablation

In clinical practice, atrioventricularnodal re-entry tachycardia (AVNRT) is the most common paroxymal supraventricular tachycardia with its own anatomical and electrophsiological (EP) properties. Although AVNRT is classically described in young patients,it can be detected at any age. Although there are other treatments, catheter ablation results in high rate of success and a low complication rate, so now catheter ablation is the standard treatment for this arhythmia. Classified by the mechanism of ablation, catheter ablation is composed of radiofrequency ablation (RFCA) and cryoablation (CRYO. Although the conventional radiofrequency ablation (RFCA) has a high rate of success for this arrhythmia, it also creates the risk of an atrioventricular block. Unlike RF, cryoablation allows a functional assessment of a putative ablation site before the permanent lesion. This abolishes the risk for permanent conduction block. Although in clinical practice the frequency of CRYO is less than RFCA,but in the future it would be uesd much more frequent.