Airway Gas - GE B20 User Manual

Airway gas

Safety precautions
Warnings
• Always check the airway adapter for a tight connection and
proper operation before attaching it to the patient.
• Remove the airway gas sampling line from the patient's airway
while nebulized medications are being delivered.
• Keep the monitor horizontal when the gas module is used. Tilting
the monitor may cause erroneous results in the gas module's
readings and damage the module.
• Leak in breathing circuit (water trap and sampling line) may
cause inaccurate readings.
• Blocked gas exhaust may cause inaccurate readings.
• EtCO values may differ from blood gas readings.
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• Be sure gas or CO measurement is off before removing water
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trap.
• Never connect any tubing to reference gas inlet connector. The
inlet must be open at all times.
• Strong scavenging suction may change the operating pressure
of the module and cause inaccurate readings or excessive
sample gas flow.
• Do not use gas or CO sidestream sampling modules on patients
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who may be adversely affected by the specified withdrawal
rates (e.g. a neonate with low tidal volume).
• To avoid the spread of infectious disease, do not allow the
exhaust to discharge in the direction of the patient or user.
• Handle the water trap and its contents as you would any body
fluid. Infectious hazard may be present.
• E-miniC measurement is intended for patients weighing over 5
kg (11 lb).
• Since sample gas may contain anesthetic agents, make sure
that it is not released in the room. Connect the exhaust to a
scavenging system to prevent exposure to anesthetic agents.
• 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.
• When monitoring neonatal or other patients that have high
respiration rate or low tidal volume these modules shall be used
within the limits of respiration rates and tidal volumes to ensure
specified measurement accuracy.
• When using the CARESCAPE respiratory modules and Airway Gas
Option module with volume controlled ventilation at low tidal
volumes, the specified gas withdrawal rate may significantly
reduce the amount of gas delivered to the patient.
• CARESCAPE respiratory modules and Airway Gas Option: Make
sure to compensate for the possible reduction of tidal volume
caused by the 120 ml/min gas sample flow.
• E-miniC module: Do not use this module on patients that cannot
tolerate the removal of 150 ml/min from their total minute
ventilation
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