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•
As with all masks, some rebreathing may occur at low CPAP
pressures.
•
Refer to your CPAP or bilevel device manual for details on settings
and operational information.
•
At a fixed rate of supplemental oxygen flow, the inhaled oxygen
concentration varies, depending on the pressure settings, patient
breathing pattern, mask, point of application and leak rate.
Technical specifications
Pressure–flow
curve
60
50
40
30
20
10
0
4
6
Dead space
information
Therapy
pressure
Resistance
Environmental
conditions
The mask contains passive venting to protect against
rebreathing. As a result of manufacturing variations,
the vent flow rate may vary.
8
10
12
Mask pressure (cm H
Physical dead space is the empty volume of the mask
to the end of the swivel.
It is 71 mL.
4 to 20 cm H
O
2
Drop in pressure measured (nominal)
at 50 L/min: 0.2 cm H
at 100 L/min: 1.0 cm H
Operating temperature: +5°C to +40°C
Operating humidity: 15% to 95% non-condensing.
Storage and transport: -20°C to +60°C
Storage and transport humidity: up to 95% non-
condensing.
14
16
18
O)
2
O
2
O
2
7
Pressure
Flow
)
(cm H
O
(L/min)
2
4
19
8
28
12
34
16
40
20
20
45
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