Philips Expression MR400 - Page 281

ExpressionMR400InstructionsforUse MonitoringAgentsandGases(AGENTOption)9‐21
WARNING
MAC values are empirical, not absolute values. The MAC values correspond to those of
healthy adults and cannot
be applied to children. Age and other individual factors
influencing the behavior of volatile agents are not taken into account.
ToopentheMACwindow
SelecttheAGENTortheGASVSbox(seepage9‐14forthelocation).
Note
If AGENT is set to Single in the System Config menu, the MAC window will display Mixed
Agents Not Included In MAC Calculation.
2
5
3
4
1
Item Name Definition
1 Et Gas Id Is the identifier for the given end-tidal gas
2 Concentration Is the current concentration of the given gas, in percent
3 1 MAC Is the minimum alveolar concentration for the given gas at which 50 percent of a
patient population does not respond with movement to a noxious stimulus, such
as skin incision; see table below.
Gas 1 MAC Value
DES (Desflurane) 6.00 volume%
ENF (Enflurane) 1.70 volume%
HAL (Halothane) 0.77 volume%
ISO (Isoflurane) 1.15 volume%
SEV (Sevoflurane) 2.10 volume%
N2O (Nitrous oxide) 105 percent