Flowmeter; Dosing And Administration Of Fresh Gas - Siare Morpheus ND User Manual

5.1

Flowmeter

5.1.1 Dosing and administration of fresh gas

The term " fresh gas " means the gas mixture that is dosed in the anaesthesia module and in the
anaesthetic vaporizer.
The fresh gas is continuously delivered to the valves group to be administered to the patient.
The excess of gas that may be present in the patient circuit is automatically eliminated through the
scavenger connection. The quantity (in l/min) of fresh gas can be greater, equal to or lower than the
Minute Volume:
•
if it is higher or equal it is an high flow open circuit (without soda lime canister)
•
if it is lower it is a semi-closed circuit
•
if the flow is lower than 1 l/min it is a low flow semi-closed circuit
WARNING !! Risk for patient / user injury
Administration of fresh gas in the breathing system
In order to deliver the fresh gas flow into the valves group (breathing system) press
the APL key on the work shelf.
Otherwise, pressing the AUX key the fresh gas will go onto the TO and FRO.
Low flows semi-closed circuit ( REBREATHING )
•
The " fresh gas " flow in the patient circuit is a little higher than the basal consumption of the
patient; therefore, the used gas concentration can be very different than the ones of the fresh
gas.
•
There is a high consumption of soda lime.
•
There is a low consumption of fresh gas.
•
The temperature and humidity of the fresh gas are optimal.
Required supervision
N
5-2
O, CO and halogenated gas).
2 2
: pay attention to the gas concentration monitoring (O ,
2
User manual, DU33ND101