Atrioventricular nodal re-entrant tachycardia (AVNRT) is a supraventricular arrhythmia caused by the circulation of an electrical impulse in the area of the atrioventricular junction. AVNRT paroxysm occurs suddenly and is also stopped suddenly, is clinically poorly tolerated, during an attack patients feel frequent palpitations, dizziness, weakness, in some cases there are pre-fainting and fainting states. The occurrence of paroxysm begins with atrial, less often ventricular extrasystole. Currently, the most effective and recommended method of treating AVNRT is radiofrequency ablation (RFА) of "slow" pathways in the atrioventricular node. The efficiency of RFA slow paths in the AV node is about 97%. According to international literature, relapses of AVNRT after RFA may occur after 5-6 years of follow-up, however, there is little information about more distant relapses of this tachycardia. This article describes a clinical case of a long-term recurrence of paroxysmal atrioventricular nodal reentrant tachycardia by type (slow-fast) 10 after radiofrequency ablation of slow pathways in the AV junction.