A clinical case of early diagnosis of dysfunction of endocardial leads and their successful removal a year after implantation is presented. A two-chamber pacemaker was implanted in 2020 for emergency indications in connection with AV blockade of the 2nd degree of Mobitz II, transient AV blockade of the 3rd degree, syncopal conditions. Subclavian access with a single puncture v.Subclavia sin was used. Ventricular and atrial electrodes of active fixation were implanted. During a routine check a year after implantation, during which endogram episodes with multiple artifacts and noise interference were detected in the device statistics in the tachyarrhythmia section. The values of the impedance and stimulation thresholds are within normal values. During the revision of the pacemaker system, the electrodes were explanted using a simple direct traction technique. After extraction, a violation of the insulation and a fracture of both electrodes were found in the area of their location between the clavicle and the I rib, which corresponds to the syndrome of compression of the clavicle. Access via v was used to implant new endocardial electrodes. Cephalica sin. Intraoperatively, the rhythm of the external pacemaker apparatus is imposed. With further dynamic observation of the patient, there were no violations in the work of the pacemaker.