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Physician’s Manual — VNS Therapy Programming Software (8.1)
Table 10.
DC-DC Converter Codes and Lead Impedance
(Model 102)
11.
Impedance Value:
On the Models 103, 104, and 105 Pulse
Generators, this parameter indicates the actual lead impedance value
measured during the execution of the diagnostic test. This parameter is
not displayed for the Models 100, 101, and 102.
12.
Intensified Follow-up Indicator (IFI)
: This indicator is only
applicable for Models 103, 104 and 105 Pulse Generators. When the
IFI is No, the battery level is good and no special attention is required.
When the IFI is Yes, the battery has depleted to a level where more
frequent clinical monitoring is recommended. The Programming
Software also displays a warning message when the IFI is set to "Yes"
to notify the user (see Figure 7 on page 18).
13.
Near End of Service (Near EOS/N EOS):
This indicator applies to
all models Pulse Generators. The Programming Software displays a
warning message if it detects a near End of Service indicator of "Yes"
(see Figure 6 on page 17). When this message is displayed, LivaNova
recommends performing a System Diagnostics Test to verify the Near
EOS status for the Models 100, 101, 102 Pulse Generators. If Near
EOS is confirmed, it is recommended that the Pulse Generator be
replaced as soon as possible. Similarly, for the Model 103, 104, and
105 Pulse Generators, the Programming Software will also display a
warning message for near End of Service (N EOS) (see Figure 8 on
page 18). For these models, no additional testing is necessary to
confirm the N EOS status and LivaNova recommends that the Pulse
Generator be replaced as soon as possible.
DC-DC
Converter Code*
Estimated Lead Impedance
(1mA, 500
μ
sec)
0
≤
1.7
kOhms
1
1.8-2.8 kOhms
2
2.9-4.0 kOhms
3
4.1-5.2 kOhms
4
5.3-6.5 kOhms
5
6.6-7.7 kOhms
6
7.8-8.9 kOhms
7
≥
9 kOhms
