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MAC configuration
Anesthetic agent identification and display
Julian automatically identifies the anesthetic agent used
and adjusts the measurement and monitoring of the
anesthetic gas concentration to suit the gas identified.
If there is a mixture of two volatile anesthetic agents,
the concentration of the secondary anesthetic agent is
displayed from a MAC value of 0.1 MAC upwards. The
gas with the higher expiratory MAC value is displayed
above the secondary gas.
A secondary anesthetic agent becomes the main
anesthetic agent if its MAC value exceeds the MAC
value of the main anesthetic agent by 0.2 MAC.
A mixture of more than 2 volatile anesthetic agents
cannot be reliably detected.
Calculating the MAC values
Julian calculates the MAC value (Minimum Alveolar
Concentration) from the linear total of volatile anesthetic
agents measured and N
O. The measured values used
2
are the end-expiratory concentrations. Partial pressures
are taken into account.
Age-corrected MAC values are calculated according to
W. W. Mapleson, British Journal of anesthesia 1996, pp.
179-185.
Displaying MAC
To activate the MAC display:
Select column »MAC config.« by turning the rotary
knob and press to confirm.
Select »MAC display« by turning the rotary knob
and press to confirm.
Select »on« by turning the rotary knob and press
to confirm.
To select the age correction for the MAC display:
Select »MAC correction« by turning the rotary
knob and press to confirm.
Select »on« by turning rotary knob and press to
confirm.
CMV
SpO
2
CO
2
40
0
PAW
20
0
Fresh Gas O + N O
2
2
P
V
max
T
O
cmH
mL
2
O %
L/min
2
50
1.00
25
600 10
CMV
MAC-config.
alarms
calibration
PAW
MAC display
default
O
40
21 Vol.%
on
off
CO
on
off
2
MAC correction
gas sensor
SpO
on
off
2
on
off
20
age
36
HLM on
off
FiCO
5
2
0
Confirm
to select Isoflurane.
Fresh Gas O + N O
2
2
P
V
max
T
O %
L/min
cmH O
mL
2
2
50
1.00
25
600 10
Monitoring
MAC configuration
98
67
alarm
SpO
2
limits
auto set
et
38
limits
Freq
CO
2
alarm
6.0
10
MV
info
Fi
Fet
list
45
41
O
2
53
51
N O
curves
2
0.8
0.6
Iso.
0.6
0.5
config.
Enf.
1.3
MAC (age: 36)
Freq.
T
:T
T :T
PEEP
IP I
I
E
bpm
%
cmH
2
10
0
1:2.0
settings
-Sensor
pulse tone
0 1 2 3 4
5
6 7 8 9
2
alarm sound
1 2 3
4
5 6 7 8 9
scale
adult.
child
parameters
record
activate monitor defaults
Freq.
T
:T
T :T
PEEP
IP I
I
E
bpm
%
cmH O
2
1:2.0
10
0
O
83
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