Prediction Of The Anesthetic Gas Concentration (Optional) - Dräger Perseus A500 Instructions For Use Manual

For gas mixtures, the respective multiples for N
and anesthetic agents are added according to the
following equation.
exp. conc. anesth.
xMAC =
MAC
age corrected
Example
exp. Iso. = 0.65 Vol%; exp. N
Age = 32 years
MAC for Iso.: MAC
age corrected
MAC for N
age corrected 2

Prediction of the anesthetic gas concentration (optional)

Perseus offers the option of displaying predictive
concentrations of anesthetic agent in the breathing
gas. This requires the Vapor View option and
Dräger Vapor 3000 or D-Vapor 3000.
The anesthetic gas prediction is appropriate for
patients with the following data only:
Height: 150 to 200 cm
(59.1 to 78.7 in)
Weight: 40 to 140 kg
(88 to 308 lbs)
Age: 18 to 90 years
The anesthetic gas prediction is not suitable for the
following patients:
– Alcohol dependents
– Greatly overweight patients
– Patients with ASA ≥IV
– Patients with severe circulatory disorders or a
cardiopulmonary bypass
These restrictions in the patient data result from
the scientific models all calculations are based on.
Instructions for use Perseus A500 SW 2.0n
1
+
anesth MAC
1
O = 69 %;
2
1)
= 1.21 Vol%
1)
O: MAC = 110 Vol%
O
2
exp. conc. anesth.
2
anesth
age corrected 2
xMAC = 0.54 + 0.63 = 1.2
The influence of other drugs (opioids or
intravenous hypnotics) is not considered in the
xMAC calculation.
1) 32 years
Using the anesthetic gas prediction
Prerequisite: The Agent prediction parameter
field must be configured in the monitoring area and
respiratory phases must be detected.
Iso prediction
C
A
The following is displayed:
A Section for the trend of inspiratory and
expiratory anesthetic gas concentration
B Section for the prediction
C Current vaporizer setting
D Prediction curve ("what if..." function)
E xMAC scale
Operation
exp. conc. N
2
+
MAC
age corrected
xMAC
D
B
O
N O
2
E
101