Post on 23-May-2020
INDUCTION
INITIAL PHASE
ONCE THE TARGET MAC VALUE OF 0.8 TO 1 HAS BEEN REACHED
CARRIER GASES
* From a patient age of > 6 months; All values are clinically-tested orientation values, however in individual cases, they must be adapted according to the individual response by the patient, the performance characteristics of the machines used and the operational requirements.
Schematic Procedure* of Minimal-Flow Anaesthesia with Carrier Gases
PD
F-N
r: PD
F-80
88
Isoflurane
Sevoflurane
Desflurane
AIRO2 N2O
AIRO2 N2O
Oxygen:
1L/min for 1-8min.,100%
Oxygen:
1L/min,40%
Air:
3L/min
FreshGas Flow:
4L/min
FreshGas Flow:
4.4L/min
Oxygen:
1.4L/min,32%
NitrousOxide:
3L/min
Oxygen:
100% to 0.25-0.35L/minNOTE: Change of
anesthetic agent concentration
Oxygen:
0.3L/min,68%
Air:
0.2L/min
FreshGas Flow:
0.5L/min
FreshGas Flow:
0.5L/min
Oxygen:
0.3L/min,60%
NitrousOxide:
0.2L/min
60-80% 35-40% 30-40%
O2
FRESH GAS FLOW SETTINGS
INSPIRATORY OXYGEN CONCENTRATION STABILIZATION (VOL%):
VAPORIZER SETTINGS (VOL%):
REDUCE FRESH GAS FLOW:
INCREASE VAPORIZER SETTINGS (VOL%):
Pre-oxygenation with 100% oxygen at 6 L/min for 1-3 minutes with a
face mask
Intravenous administration of the hypnotic or inhalation
induction
Analgesia and relaxation
(NOTE: Oxygen & Oxygen/Air Mixtures may
require 20% higher dosingof induction opioid)
Endotracheal intubation or insertion of a larynx mask
Connection of patient to the circuit system
OXYGEN OXYGEN/AIR MIXTURE
OXYGEN/NITROUS OXIDEO2 O2
NNO
DESSEVOISO
5-6% 12%5-6%
DESSEVOISO
2.5% 6%3.5%
DESSEVOISO
1-1.5% 4-6%2-2.5%
DESSEVOISO
N/A N/AN/A
DESSEVOISO
5% 8%5%DESSEVOISO
2.5% 5-7.5%3-3.5%