•
Changes in the de
fi
brillation electrode surface area, such as changing
from a TRIAD con
fi
guration to a single coil con
fi
guration, can affect
the impedance measurements. Baseline de
fi
brillation impedance
measurements should fall within the recommended values indicated
in the table.
CAUTION:
R-wave amplitudes of less than the recommended value
can cause inaccurate rate counting in the chronic state, possibly
resulting in failure to sense a tachyarrhythmia or misdiagnosis of
a normal rhythm as abnormal. Signal durations that exceed the
programmed refractory period of the pulse generator can cause
inaccurate rate sensing which may cause inappropriate behavior.
3.
If measurements do not conform to the values in the table, perform the
following steps:
•
Remove the PSA alligator clips from the Connector Tool.
•
Reinsert the stylet and reposition the lead using the procedures
previously discussed and repeat the lead evaluation process.
•
If testing results are unsatisfactory, further lead system repositioning
or replacement may be required.
Consider the following information:
•
Low stimulation threshold readings indicate a desirable safety margin,
since stimulation threshold may rise after implantation.
•
Initial electrical measurements may deviate from recommendations
because of acute cellular trauma. If this occurs, wait approximately
10 minutes and repeat testing. Values may be dependent on
patient-speci
fi
c factors such as tissue condition, electrolyte balance,
and drug interactions.
•
Amplitude and duration measurements are not inclusive of current of
injury and are taken during the patient’s normal baseline rhythm.
•
Over-rotation of the terminal pin may increase local tissue trauma and
cause temporarily high voltage thresholds.
4.
Once acceptable measurements are obtained, remove the pacing system
analyzer connections, and remove the stylet.
5.
Pinch the terminal boot levers and slide the Connector Tool off of the
proximal end of the lead.
6.
If additional repositioning and/or PSA measurements are necessary,
reattach the Connector Tool, ensuring the lead is fully inserted, and repeat
the evaluation process.
Connection to a Pulse Generator
Consult the applicable pulse generator physician’s manual for more instructions
for connecting lead terminals to the pulse generator.
1.
Verify the stylet and any terminal pin accessories are removed prior to
connecting the lead to the pulse generator.
24
Outdated version. Do not use.
Version überholt. Nicht verwenden.
Version obsolète. Ne pas utiliser.
Versión obsoleta. No utilizar.
Versione
obsoleta. Non utilizzare.
Verouderde
versie. Niet gebruiken.
Föråldrad
version. Använd ej.
Παλιά
έκδοση
.
Μην
την
χρησιμοποιείτε
.
Versão obsoleta. Não utilize.
Forældet version. Må ikke anvendes.
Zastaralá verze. Nepoužívat.
Utdatert versjon. Skal ikke brukes.
Zastaraná verzia. Nepoužíva
ť
.
Elavult verzió. Ne használja!
Wersja nieaktualna.
Nie u
ż
ywa
ć
.
