Mindray Passport 5-Lead, Service Manual

Page: 151 / 544

Passport 5-Lead, 5L, LT, XG Service Manual 0070-00-0420 1 - 139
Operation (5-Lead, 5L, LT and XG) Operation (XG)
2. Place the Capnostat® onto the ZERO cell.
3. The “Sensor on Zero Cell” message is displayed.
4. Select Start Zero Cal - Yes from the CO
2
menu. The “Zero Cal in Progress” message is
displayed. The" Zero Cal Complete" message is displayed when complete and a 0
value is displayed.
5. Remove sensor from the zero cell and place onto the airway adapter.
FIGURE 1-75 Zero Cell
1.6.13 Sidestream CO
2
Gas Monitoring
Sidestream Capnography is a technique used for measuring the CO
2
in the respiration of
adult and pediatric patients. Sidestream capnography can be acquired via a nasal cannula
(non-intubated) or through a sampling line connected to a breathing circuit (intubated).
WARNING: The maximum sampling rate at the nasal cannula is 200 ml/
min. This device should not be used on patients whose
breathing could be impaired by this vacuum flow rate.
WARNING: Connection of the Passport’s exhaust port to the hospital’s
waste gas scavenge system is recommended to prevent
exposure of hospital personnel to the patient’s respiratory
sample.
The sidestream application has an inherent start-up delay. For situations where time to
waveform is critical the mainstream application is quicker.
The sidestream application has an inherent CO
2
measurement delay caused by the time the
sample takes to travel from the monitoring site to the sampling airway adapter. The longer
and/or wider the sampling tube, the longer the delay.
NOTE: The pump must be turned-off before any change is made to
the tubing configuration, including nasal cannula, nafion
tubing, filter or airway adapter with sample tube. After the
changes are made, start the pump as described in step 6 in
Section Section 1.6.13.1 on page 1-140.
NOTE: For sidestream operation, always set the apnea and CO
2
alarms.
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