A case of twitching on the pacemaker pocket

Abstract Pacemaker-induced extracardiac stimulation may involve the diaphragm, the pectoral or the intercostal muscles. The common causes are unipolar lead, electrode insulation defects, lead displacement and connector problems. We reported a case of twitching on the pacemaker pocket and discussed the reasons of pacemaker pocket stimulation. After evaluation of the patient we detected an insulation defect on the pacemaker lead that the cause of stimulation on pacemaker pocket.