Instructions for use | Atlan A100 (XL), A300 (XL), A350 (XL) SW 2.1n 147
Operation
2. Set the fresh-gas delivery.
The device is equipped with a minimum O
2 delivery function which ensures that
a minimum quantity of oxygen is delivered. For further information see:
"Minimum O
2 delivery (SORC)", page 324.
When performing low-flow anesthesia and minimal-flow anesthesia, observe the
information on page 152.
Electronically controlled gas mixer:
● Select the carrier gas (3).
Set the O
2 concentration (5) and fresh-gas flow (4).
Mechanically controlled gas mixer with electronic flow measurement:
● Open and set the flow control valves for the required gases.
Also use the total flow tube to check the set total flow, see page 34.
Mechanically controlled gas mixer with flow tubes:
● Open and set the flow control valves for the required gases.
3. Adjust the ventilation settings (2).
4. Press the rotary knob. The therapy starts and a signal tone sounds.
8.2.4 Specific points to note for equipment with inspiratory O2
measurement
When the device is equipped with inspiratory O2 measurement and is used in
combination with an external anesthetic gas monitor, the extracted sample gas is
not fed back into the breathing system.
If this sample gas flow is not taken into consideration when the fresh-gas delivery is
set, a lack of fresh gas may result. Increase the fresh-gas flow accordingly,
especially for minimal-flow anesthesia and low-flow anesthesia.
The sample gas flow extracted by the external anesthetic gas monitor leads to a
discrepancy between the set inspiratory tidal volume and the measured expiratory
tidal volume. This discrepancy affects the displayed measured values for VT, MV,
∆VT, and MVleak.
8.3 Adjusting the therapy
8.3.1 Setting the APL valve
The pressure limitation set with the APL valve only takes effect during manual
ventilation or spontaneous breathing.
WARNING
Risk of excessively high airway pressures
If the ventilator fails, the device switches into the Man/Spon ventilation mode.
► Follow the instructions on the screen.
► Also set the APL valve to a value suitable for the patient when using mechanical
ventilation modes. If the ventilator fails, ventilate the patient manually.
● The selection between manual ventilation (Man) and spontaneous breathing
(Spont) is made at the APL valve, see page 22.