Dräger Atlan A300 Instructions For Use Manual page 73

Example of calculation: Adult breathing hose with filter on Y-piece, no filters
on the ports
Breathing system with
reusable CO
MX50115 soda lime dust fil-
ter
Breathing hose
Breathing bag hose
Filter at inspiratory port
Filter at expiratory port
Filter at Y-piece
Result
Since R
(cmH
Depending on the breathing circuit in use, the connected accessories, and the
resistance of the patient's airways, air trapping (incomplete expiration) may occur
with some ventilation settings. Air trapping can be recognized on the flow waveform
by the fact that the inspiration begins before the expiration has ended.
The effects are, for example, a reduced minute volume in pressure-controlled
ventilation or higher mean airway pressures and peak pressures in volume-
controlled ventilation.
Air trapping can be prevented on the anesthesia machine by the following
measures:
– Adjusting the respiratory rate and inspiratory time
– Changing the configuration of breathing hoses and accessories that carry gases
during the expiratory time
It is the responsibility of the user of the medical device to select the most suitable
remedial measure.
4.8.4 Connecting a non-rebreathing system
Non-rebreathing systems are suitable and intended only for manual ventilation or
spontaneous breathing. This connection is only possible with the "External fresh-
gas outlet" option.
Since no rebreathing via the breathing system takes place when a non-rebreathing
system is in use, the fresh-gas flow must be set at least as high as the minute
volume.
Follow the instructions for use for the non-rebreathing system and the transfer
hose.
To prevent contamination of the ambient air with anesthetic gases, connect the gas
outlet of the non-rebreathing system to the inlet on the AGS.
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Instructions for use Atlan A300, A300 XL, A350, A350 XL SW 1.0n
absorber and
2
is greater than –6 hPa (cmH
Inspiration
O), this configuration may be used.
2
Inspiratory resistance
[hPa (cmH O)]
2
at 30 L/min
R –1.2
Breathing_sys-
tem_insp
- R 0.5
Insp_hose
- R 0.3
Breath-
ing_bag_hose
- R 0
Insp_filter(port)
- R 2
Insp_filter(Y-piece)
R -4.0
Inspiration
O) and R
2
Assembly and preparation
Expiratory resistance
[hPa (cmH O)]
2
at 30 L/min
R 2.9
Breathing_system_
exp
+ R 0.5
Exp_hose
+ R 0
Exp_filter(port)
+ R 2
Exp_filter(Y-piece)
R 5.4
Expiration
is less than 6 hPa
Expiration
73