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Physician’s Manual — VNS Therapy Programming Software (8.1)
output current is not being delivered. Possible reasons for failure to deliver
the programmed output current include high lead impedance and low
battery voltage.
For Models 103, 104, and 105 Pulse Generators, performing a Normal
Mode Diagnostics is the same as performing System Diagnostics. All
parameters are acceptable. If the output current is programmed to 0.0 mA,
the generator will only produce one pulse of 0.25 mA in order to assess the
lead impedance.
Figure 24.
NORMAL MODE DIAGNOSTICS Screen
4.2.2.5.
Magnet Mode Diagnostics
The Magnet Mode Diagnostics test is similar to the Normal Mode test (see
Figure 25 on page 42). This test determines whether the device is
delivering the programmed magnet output current. While performing the
Magnet Mode Diagnostics test, hold the magnet over the Pulse Generator
for at least one second, immediately remove it from the area, and quickly
place the Programming Wand over the Pulse Generator. This action,
described in greater detail in the section entitled “Initiating Stimulation
with a Magnet” of the physician’s manual for the VNS Therapy Pulse
Generators
,
enables output current stimulation. If this action is not
performed correctly the Magnet Mode Diagnostics test will be invalid and
a message stating that the magnet swipe was not detected will be displayed
for all Model Pulse Generators. In addition, the message "Magnet Mode
Models 100, 101, 102 Models 103, 104, 105
