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To select the MAC type
1. Press Monitor Setup key.
2. Select Install/Service and enter the password.
3. Select Installation - Monitor Settings - Parameter Settings.
4. Select MAC Type.
To enable the MACage calculation:
−
Give the patient’s age in menu Admit/Discharge - Admit
Patient - Demographics.
− Attach a temperature sensor.
If the patient’s age is not given, the monitor shows normal MAC even
if MACage has been selected.
NOTE: The MAC value displayed by the monitor is that of exhaled air,
and it does not always correspond to the amount of anesthetic in
the patient’s organs.
NOTE: If oxygen or CO
2
status is invalid or agent identification fails,
the monitor displays the balance gas value as invalid.
Automatic agent identification with E-sCAiO, N-CAiO
modules
NOTE: B40 only.
The modules with agent identification option will automatically
identify and select Isoflurane, Desflurane, Sevoflurane, Enflurane
and Halothane. The E-sCAiO module is able to identify two agents
simultaneously and displaying them as primary and secondary
agents. The N-CAiO module is able to identify and display one agent.
The inspiratory and expiratory concentrations of the agent are
displayed in digit field. Minimum concentration for the identification
is 0.15 vol%. The agent selection remains active even if the
concentration decreases below 0.15 vol%. Automatic agent
identification is operational after the normal warm up of the module
(approximately five minutes).
• If rapid agent concentration changes are required, fresh gas
flow must be increased.
• Anesthetic agent concentration in the circuit is affected by
patient uptake, breathing system volume and the fresh gas flow.
It quantifies the speed of wash-in and wash-out anesthetic
agents.
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