Mindray BeneHeart D3, Operator'S Manual

Page: 81 / 186

9-3
9.4 Demand Mode versus Fixed Mode
The equipment can deliver paced pulses in either demand or fixed mode.
„
In demand mode, the pacer only delivers paced pulses when the patient’s heart rate is lower than the selected
pacing rate.
„
In fixed mode, the pacer delivers paced pulses at the selected rate.
During pacing, you can change pacer mode. Then the equipment continues to deliver pace pulses at selected pacer rate
and pacer output.
CAUTION
z
Use demand mode pacing whenever possible. Use fixed mode pacing if noise or artifact interferes with
proper sensing of R-wave or when monitoring electrodes are not available.
z
During fixed mode pacing, R-wave markers do not appear on the paced beats.
z
During demand mode pacing, spontaneous beats may be presented which are not associated with the
delivery of pace pulse. If the patient’s heart rate is above the pacer rate, pace pulses are not delivered and,
therefore, pacing markers do not appear.
9.5 Preparing for Pacing
1. If not pre-connected, connect the pads cable to the equipment. Then push until you hear it click into place.
2. Make sure the multifunction electrode pads packaging is intact and within the expiration date shown.
3. Connect the pads connector to the pads cable.
4. Apply the pads to the patient using anterior-lateral or anterior-posterior placement.
5. If pacing in demand mode, apply monitoring electrodes, and connect the ECG cable to the equipment. To get the
best monitoring signal, make sure there is adequate space between ECG electrodes and therapy electrodes. Refer
to 6.4.1 ECG Monitoring with Electrodes .