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Description
%
Vol.
MAC as a function of age
9
8
7
6
5
4
3
2
1
0
0
10
20
30
exp. conc. Anaesth
MAC
xMAC =
age-corrected
Example:
etSEV = 1.5 Vol.%; et N
MAC
of SEV: MAC
age-corrected
MAC
of N
O: MAC
age-corrected
2
xMAC = 0.7 + 0.5 = 1.2
452
Desflurane
1/20 N
Sevoflurane
Enflurane
Isoflurane
Halothane
40
50
60
70
80
Age (years)
exp. conc. Anaesth
1
Anesth
MAC
1
+
O = 60 %; age = 10 years
2
= 2.2 Vol.%
10
= 125 Vol.%
10
xMAC display
Zeus IE indicates the MAC multiple (xMAC), which
is determined from the present expiratory measure-
ments and the age-dependent MAC values. In the
case of gas mixtures the respective multiples for ni-
trous oxide and the anesthetic agents are added in
accordance with the following equation.
O
2
2
Anesth
age-corrected
2
+
Instructions for use Zeus Infinity Empowered SW 2.n
exp. conc. N
O
2
MAC
N
O
age-corrected
2
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