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Airway gases
WARNING
Always ensure the correct size and fit of accessories according
to patient type and application, especially when monitoring
pediatric and neonatal patients. The size and fit of accessories
may impact the measured gas concentration values at low
tidal volumes. It is recommended to have the gas sampling
port close to the proximal end of the endotracheal tube.
Excessive dead space in the circuit, including the accessories,
may cause re-breathing of gases. Very low accessory dead
space between the breathing circuit Y-piece and the gas
sampling site may impact the measured gas concentration
due to dilution of the sampled exhaled gas with fresh gas from
the ventilator. To confirm accurate correlation with measured
gases and blood, check arterial blood gas values to confirm a
suitable setup is used.
Airway gases cautions
CAUTION
Never connect the loose end of the gas sampling line to
the Patient Spirometry connector as this may break the
spirometry unit. The Patient Spirometry connector is meant
for the Patient Spirometry tube only.
CAUTION
Do not apply pressurized air or gas to any outlet or tubing
connected to the monitor. Pressure may destroy sensitive
elements.
Airway gases measurement limitations
●
E-modules can be used within their specified performance range with OR, PACU,
ICU, and ED software packages.
●
E-miniC is not suitable for use with patients weighing less than 5 kg (11 lbs).
Airway gases points to note
●
If anesthetic agents are present, use GE Healthcare anesthesia sampling lines
(PE/PVC). Otherwise, you can use GE Healthcare CO
2
sampling line (PVC).
●
Compact airway modules and CARESCAPE respiratory modules: Anesthetic agent
identification, MAC or MACage, N
2
O and EtBal are available with the anesthetic
agent measurement license only. This license is available for OR, PACU, and ICU
software packages.
For more information, see the CARESCAPE Modular Monitors Supplemental
Information Manual.
●
Make sure that you are using a water trap that is compatible with the module:
￭
CARESCAPE respiratory modules: D-fend Pro or D-fend Pro+
￭
Compact airway modules: D-fend or D-fend+
￭
E-miniC: Mini D-fend
●
Empty the water trap container as soon as it is more than half full.
●
Place the airway adapter between the HME and Y-piece.
●
Place the airway adapter with all sampling ports upwards.
●
Always check the tightness of all connections.
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