Flow Through The Breathing System; Overview Of Flow Paths - GE Datex-Ohmeda Aisys Carestation Reference Manual

2.12 Flow through the breathing system

2.12.1 Overview of
flow paths
M1046983 04/08
This section looks at four types of flow paths.
• Ventilation paths: How gas flows from the drive source (bag or bellows) to and from
the patient.
• Fresh gas paths: Fresh gas can flow from the machine interface directly to the patient
through the inspiratory check valve, or through the absorber into the expiratory flow,
or directly to an external circuit through the optional auxiliary common gas outlet.
• Scavenged gas paths: APL or Pop-off.
• Flow through the optional EZchange Canister and Condenser: EZchange ON and
EZchange OFF (CO bypass).
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2 Theory of Operation
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