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IVT
Perielectrode Fibrosis
Scar tissue formation around implanted electrode contacts that can impair stimulation efficacy and alter impedance values.
Full Definition
Perielectrode fibrosis refers to the biological response where fibrous connective tissue forms around implanted neurostimulation electrodes over time. This encapsulation can create a barrier between the electrode and target neural tissue, potentially reducing stimulation effectiveness and requiring parameter adjustments. The fibrotic response varies among patients and can influence long-term therapeutic outcomes in neuromodulation devices.
Usage
Usage note: Often abbreviated in clinical notes; distinguish from mechanical lead problems.
In Context
- "The patient's declining symptom control was attributed to perielectrode fibrosis detected during impedance testing." — Device follow-up report
Also known as
electrode encapsulation
perielectrode scarring
Don't confuse with
lead fracture
impedance drift