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Patient Does Not Perceive AutoStim
Activation
• Possible causes:
- AutoStim Threshold is too high (e.g., 70% threshold versus 50%)
- Patient has become accustomed to the programmed setting
- AutoStim output current is programmed to 0 mA
- Generator battery at end of service (EOS)
- Defective generator or lead
- Disabled generator
“Cannot feel AutoStim”
Interrogate the generator
Record the CAUSE
“The generator is currently disabled
due to [CAUSE]. The generator is
NOT supplying stimulation.”
Note: If the CAUSE is “a wand
reset” and the reset was intended,
continue with the session
• Confirm Detection is enabled
• Confirm AutoStim output current is set to > 0 mA
and ≥ Normal output current
Confirm heartbeat detection (See “Troubleshooting” in
the programming system Physician’s Manual
Perform an AutoStim Diagnostics and record results
• Examine oce visit data in Device History or Events
• Investigate consecutive oce visits to identify any
changes in the average number of AutoStims per day
delivered
Yes
Current Delivered
If > 0 If 0
Current Not
Delivered
No
“Disabled Message?”
Patient Report
The generator is delivering
AutoStim. If perceived
stimulation is desired,
consider raising the
AutoStim current
Re-evaluate at next oce visit
If the average number of AutoStim activations per day
since last oce visit is 0 and the patient has had seizures
during this period, adjust the AutoStim Threshold setting
toward 20%
Repeat this process at subsequent oce visits until the
patient perceives stimulation or the device confirms the
logging of events
Note: Decreasing the detection threshold increases
the likelihood of detecting heart rate rises associated
with seizures, but may increase the overall number of
AutoStims delivered and impact battery longevity
Contact Clinical Technical Support
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