User Manual Part 1

1-10
INFORMATION FOR USE
PRECAUTIONS
•Defibrillation power surge. Defibrilla tion that causes a power surge
exceeding 360 watt-seconds can damage the pulse generator system.
• Programming for supraventricular tachyarrhythmias (SVTs).
Determine if the device and programmable options are appropriate for
patients with SVTs because SVTs can initiate unwanted device therapy.
• Ventricular refractory periods (VRPs) in adaptive-rate pacing.
Adaptive-rate pacing is not limited by refractory periods. A long refractory
period programmed in combination with a high MSR can result in
asynchronous pacing during refractory periods since the combination can
cause a very small sensing window or none at all. Use dynamic AV Delay
or dynamic PVARP to optimize sensing windows. If you are entering a
fixed AV delay, consider the sensing outcomes.
• Do not bend the lead near the lead-header interface. Improper insertion
can cause insulation damage near the terminal end that could result in
lead failure.
• Shock waveform polarity. For IS-1/DF-1 leads, never change the shock
waveform polarity by physically switching the lead anodes and cathodes
in the pulse generator header—use the programmable Polarity feature.
Device damage or nonconversion of the arrhythmia post-operatively may
result if the polarity is switched physically.
• Absence of a lead. The absence of a lead or plug in a lead port may
affect device performance. If a lead is not used, be sure to properly insert
a plug in the unused port.
• Electrode connections. Do not insert a lead into the pulse generator
connector without first visually verifying that the se tscrew is sufficiently
retracted to allow insertio n. Fully inse rt ea ch lea d int o its lead port and th en
tighten the setscrew onto the electrodes.
• Tachy Mode to Off. To prevent inappropriate shocks, ensure that the
pulse generator’s Tachy Mode is programmed to Off when not in use
and before h andling the device. For tachyarrhythmia therapy, verify that
the Tachy Mode is activated.
- DRAFT -