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Synchronized Cardioversion Using the LIFEPAK 5
Propaq Encore Reference Guide 133 Welch Allyn
Synchronized Cardioversion Using the LIFEPAK 5
1. Set up the LIFEPAK 5 Defibrillator and any other instrumentation according to
institutional procedures and manufacturer’s operating instructions. Use the
instructions above for installing the Propaq Encore Defib Sync interface.
2. Verify the integrity of the ECG patient electrodes and the fidelity of the ECG
waveform on the Propaq Encore for tall, distinct R-waves and minimal artifact.
3. With the LIFEPAK 5 turned on, press the LIFEPAK’s
SYNC button on the front-left of the LIFEPAK 5. The
button lights when activated. Make sure it lights.
4. After the SYNC button is activated, check the Propaq
Encore display for dashed lines above and below each
R-wave, occurring in near-synchronization with each
R-wave. These are synchronization markers. Check that
the LIFEPAK 5’s SYNC button also flashes with each
R-wave.
Warning The R-wave amplitude must be at least 0.5 mV (5 mm tall when the
Propaq Encore ECG sensitivity—
SIZE button—is set to 1 mV/cm) to guarantee
that the defibrillator sync pulse will occur no later than 35 milliseconds after the
peak of an R-wave. Reposition the patient electrodes or change the Propaq
Encore lead selection as necessary to ensure sufficient ECG waveform
amplitude. However, make sure the R-wave amplitude is not so high that it
obscures the displayed sync markers.
As a visual gauge for estimating R-wave amplitude, the ‘V’ of the mV/cm label
to the left of the ECG waveform is about 4 mm in height. With the Propaq
Encore ECG sensitivity set to 1 mV/cm, compare the letter ‘V’ with the height
of the R-wave, which should be at least 5 mm tall.
SYNC
ONLY
WITH
LP5
3 LEAD
OR SYNC
MODEL
CARDIO-
SCOPES
SYNC
(PUSH)