14 Monitoring Carbon Dioxide
206
4
Zero the sensor:
– Expose the sensor to room air and keep it away from all sources of CO
2
including the
ventilator, the patient's breath and your own.
– In the setup menu for the CO
2
, select Start Zero Cal.
– When you see the message
CO₂ calibration done at <Date and Time> on the status line, the zero
calibration is finished and you can begin monitoring.
5 Install the airway adapter at the proximal end of the circuit between the elbow and the ventilator Y-
section.
WARNING
To prevent stress on the endotracheal tube, support the sensor and airway adapter.
Position sensor cables and tubing carefully to avoid entanglement or potential strangulation. Do not
apply excessive tension to any cable.
Replace the airway adapter, if excessive moisture or secretions are observed in the tubing or if the
CO
2
waveform changes unexpectedly without a change in patient status.
To avoid infection, use only sterilized, disinfected or disposable airway adapters.
Inspect the airway adapters prior to use. Do not use if airway adapter appears to have been damaged
or broken. Observe airway adapter color coding for patient population.
Preparing to Measure Sidestream CO2
1 Plug the sensor cable into the monitor's CO
2
input connector. Allow the sensor two minutes warm
up time
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