The following reasons need the removal of a lead:
- Infection at the device or lead's location.
- Damage to the lead on the inside or outside.
- Scar tissue is developed at the lead's tip.
- A clot or scar tissue can block a vein.
Reference - Lead Extraction. (n.d.). Retrieved from https://my.clevelandclinic.org/health/treatments/17165-lead-extraction