Medtronic PROTECTA XT DR D314DRG, Руководство для клиницистов

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4. Perform a manual Lead Impedance Test to verify defibrillation lead connections. Refer
to the lead technical manual and see Table 11 for information about acceptable
impedance values. Perform this test with the device in the surgical pocket. Keep the
surgical pocket very moist. If the lead impedance is out of range, perform one or more
of the following tasks:
●
Recheck the lead connections and lead electrode placement.
●
Inspect the EGM for abnormalities.
●
Repeat the manual Lead Impedance Test.
5.5.3 How to perform defibrillation threshold testing using T-Shock
1. Select Tests > EP Study.
2. Select T-Shock from the list of EP Study functions.
3. Confirm that the Resume at DELIVER check box is selected to resume arrhythmia
detection after the induction is delivered.
Note: During a wireless telemetry session, you cannot deliver a T-Shock induction
when there is a magnet or programming head over the device and the Resume at
DELIVER check box is selected. If an error message appears, remove the magnet or
programming head, or clear the Resume at DELIVER check box.
4. Select [Adjust Permanent…].
5. Set the Energy parameter for VF Therapy Rx1 to 10 J less than the desired final
programmed value. Set VF Therapies Rx2–Rx6 to the maximum value.
6. Set the RV Sensitivity parameter to a value that results in an adequate safety margin
for detecting VF. For a final programmed RV Sensitivity of 0.3 mV, an adequate safety
margin is typically attained by setting the value to 1.2 mV during testing.
7. Set VF Enable to On. This also automatically sets the AF/Afl, Sinus Tach, and Wavelet
features to On.
8. Select [PROGRAM].
9. Select [Close].
10. Select the Enable check box.
11. Select [DELIVER T-Shock]. If necessary, select [ABORT] to abort the induction or any
therapy in progress.
12. Observe the Live Rhythm Monitor for proper detection, therapy, and post-shock
sensing.
Medtronic PROTECTA™ XT DR D314DRG
118 Clinician Manual