PHILIPS Respironics Nuance Manual page 8

intended to be used with special masks with connectors which have vent holes
to allow continuous flow of air out of the mask. When the CPAP machine is turned
on and functioning properly, new air from the CPAP machine flushes the exhaled
air out through the attached mask exhalation port. However, when the CPAP
machine is not operating, enough fresh air will not be provided through the mask,
and exhaled air may be rebreathed. This warning applies to most models of CPAP
systems.
If oxygen is used with the device, the oxygen flow must be turned off when the
device is not operating. Explanation of the Warning: When the device is not
in operation, and the oxygen flow is left on, oxygen delivered into the ventilator
tubing may accumulate within the device enclosure. Oxygen accumulated in the
device enclosure will create a risk of fire.
Do not block or seal off the exhalation ports.
At a fixed flow rate of supplemental oxygen flow, the inhaled oxygen concentration
will vary, depending on the pressure settings, patient breathing pattern, mask
selection, and the leak rate. This warning applies to most types of CPAP and bi-level
machines.
At low CPAP or EPAP pressures the flow through the exhalation port may be
inadequate to clear all exhaled gas from the tubing. Some rebreathing may occur.
Attaching an exhalation device requires therapy pressure level adjustment to
compensate for increased leak.
Features
APillows Cushion Tip
BPillows Cushion Gel Base (Do not insert into nostrils)
CPillows Cushion Platform
DElbow with Built-in Exhalation (Do not block)
ERetaining Ring
FTube (Permanently attached to Elbow D and Swivel G)
GSwivel (connects to CPAP tubing)
HFabric Frame with Retaining Ring E
IFabric Frame Side Strap and Tab
JHeadgear Back Strap (Philips Respironics logo)
KHeadgear Crown Strap and Tab
LHeadgear Tube Management Loop (Optional)
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