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Anesthesia machine...part2..Breathing circuits..





Mode
Reservoir
(breathing bag)
Rebreathing
Example
Open
No
No
Open drop
Semi-open
Yes
No
Nonrebreathing circuit, or Circle at high FGF (> VE)
Semi-closed
Yes
Yes, partial
Circle at low FGF
(< VE)
Closed
Yes
Yes, complete
Circle (with pop-off valve [APL] closed)
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