Expiration (Without Peep - Datex-Ohmeda Anesthesia Delivery Unit S/5 Technical Reference Manual

Datex-Ohmeda ADU
Figure 7

Expiration (without PEEP)

During the expiration the inspiration valve is closed and the Expiration and PEEP pilot valves change
their positions (closing) and release the pressure on the EXP. and PEEP valves. The pressure inside
the bellows chamber is released into the atmosphere.
The patient expires gas into the bellows.
When the bellows reaches its top position, extra gas is bled to the scavenging system through an
overflow valve. The overflow valve needs about 2 to 3 cmH
open.
C-6
Pressure controlled ventilation
O of overpressure in the patient circuit, to
2
Document No. 8502855