23-year-old woman implanted with a Lumax DR-T dual-chamber ICD for resuscitated sudden death; event report (yellow color) in the setting of a VF episode.
A lead fracture is revealed in this patient as a result of the sensing of a VF episode and the delivery of an electric shock. The delivered electric shock sometimes stretches an already strained and previously weakened lead, thereby favoring its fracture. The first shock delivered on the ventricular arrhythmia episode is effective with a shock impedance within the normal range with no oversensing episode recorded beforehand in the device memory. The pacing impedances were also strictly normal prior to the episode with a clear increase in values as a result of this episode. The association of very short, disorganized intervals and high impedance values is suggestive of a lead fracture. This patient underwent a lead extraction and implantation of a new ipsilateral lead.
