Philips Efficia DFM100 - Demand Mode Versus Fixed Mode; Preparing for Pacing

Demand Mode Versus Fixed Mode 8: Pacing
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Demand Mode Versus Fixed Mode
The Efficia DFM100 can deliver paced pulses in either Demand Mode or Fixed Mode.
• In Demand Mode, the pacer only delivers synchronous paced pulses when the patient’s heart
rate is lower than the selected pacing rate.
• In Fixed Mode, the pacer delivers asynchronous paced pulses at the selected rate.
WARNING: Use Demand Mode pacing whenever possible. Use Fixed Mode pacing when artifact or other ECG
noise makes R-Wave detection unreliable, when monitoring electrodes are not available or at your
clinical discretion.
The Efficia DFM100 requires a 3- or 5-Lead ECG cable and monitoring electrodes as the source of
the ECG during Demand Mode pacing. Pace pulses are delivered through multifunction electrode
pads. However, during Demand Mode pacing, the pads cannot be used to monitor ECG and deliver
paced pulses simultaneously.
NOTES: The ECG derived from pads does not need to be displayed in a wave sector in order to deliver pacing
therapy.
When using the Efficia DFM100 for pacing in the Operating Room in the presence of cautery tools,
use Fixed Mode only.
When using Demand Mode, pads are not an available choice for display in Wave Sector 1, through
either the Lead Select button or the Displayed Waves menu.
Preparing for Pacing
 To prepare for pacing:
1 If not already connected, connect the Therapy cable to the Efficia DFM100. See “Connecting
the Therapy Cable” on page 7.
2 Prepare the patient’s skin to achieve good contact. See “Skin Preparation” on page 48.
3 Connect the multifunction electrode pads. See “Connecting Multifunction Electrode Pads.” on
page 8.
4 If pacing in Demand Mode, apply monitoring electrodes (see “Electrode Placement” on
page 49) and connect the ECG cable to the Efficia DFM100 (see “Connecting the ECG cable.”
on page 9).
WARNING: Do not reverse pad position on the patient. Reversing the pads’ positions increases the pacing
threshold which means more current is needed to capture the heart, resulting in greater patient
discomfort.