Professional
Technical
IVT
Tachyphylaxis
Pronunciation: tak-ih-fih-LAK-sis
Rapid loss of therapeutic response to neuromodulation therapy despite continued or increased stimulation parameters.
Full Definition
Tachyphylaxis in neuromodulation refers to the phenomenon where patients experience a diminishing therapeutic effect from electrical stimulation over a relatively short period, typically days to weeks. This differs from habituation, which occurs over months to years. Tachyphylaxis may result from neural adaptation, changes in electrode-tissue interface, or disease progression, and often requires stimulation parameter adjustments or alternative programming strategies.
Usage
Usage note: Medical term requiring clear definition in patient documentation; distinguish from equipment failure.
In Context
- "The patient developed tachyphylaxis within two weeks of optimal parameter adjustment, necessitating a change to burst stimulation patterns." — Clinical progress note
Also known as
acute tolerance
rapid desensitization
Contrasted with
sensitization
Don't confuse with
habituation
device malfunction
disease progression