Ous mdr.After an implantation period of approx 2 years, the icd indicated eri.Furthermore, vf detections, almost all of them occurring between 1 and 2 am during the night, were reported upon interrogation.Some kind of artifact was causing vf detections, which would stop during charging.Artifacts were seen on both the rv and ff channels.Icd and lead were explanted and returned to biotronik.No adverse patient side effects have been reported.The date of explant and the event date were not reported.
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The lead was visually inspected, revealing multiple signs of wear along the lead body.In particular in the distal area of the lead the insulation was found rubbed through.This damage can be considered to be the root cause of the documented artifacts.Based on the characteristics of this damage, it is reasonable to assume that the lead had been subject to severe mechanical stress in the implanted state.Significant motion in the area of the tricuspid valve and interaction with modified tissue should be taken into account.Diagnostic images clarifying this assumption were not available.Further damages, such as deformations of the shock coils, most likely occurred during the explantation procedure.
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