Document Reference: ENG-UMAN-000731
Revision: 5.00
Page 25 of 61
Figure 8.8: Impedances displayed on the 24 electrodes and CLS case (#25).
4.
Electrodes with a cross through them
are high impedance (> 4000 Ω) and
may be disconnected. Disconnected electrodes show an impedance of ∞ and
cannot be used for stimulation or recording.
Note: The CLS case cannot be used for stimulation, and may show as high impedance
(> 4000 Ω). The CLS case may be used for recording even if high impedance is shown.
5.
Electrodes with a lightning bolt through them
may be shorted (< 50 Ω) and
care should be taken when programming.
Caution: If the electrodes show an open circuit (disconnected):
Wipe any blood or fluid off the lead connection contacts.
If the system is fully implanted, high impedance may indicate that
the lead is broken or dislodged from the header and the patient may
require revision surgery if stimulation is insufficient.
Note: When connected to an eCLS the CLS case will show as disconnected and cannot be
used.
8.6
Set up lead orientation
1.
Touch the handle at the bottom of the lead image to move it up, down or switch
sides to a position that reflects the lead location in the most recent fluoroscopy
image (see Figure 8.9). This will aid in determining the best stimulation and
measurement electrode combination.
