On 04/18/2023, a master class with the participation of a doctor of interventional arrhythmology of the Research Institute of Cardiology and Internal Diseases, Almaty Abdymomunov Artur Kanybekovich was held on the basis of the KGP at the Emergency Medical Center in Semey with the support of the State Institution “Health Department of the Abai region”. 4 successful radiofrequency ablation operations were performed in patients with cardiac arrhythmia using the navigation electrophysiological system (EPS). Employees of the Department of Therapy of the “SMU” NCJSC and residents cardiologists took part in this master class. All operations were performed without complications with positive results and improved quality of life of patients.[/vc_column_text]