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minutes can in some circumstances lead to suffocation. This
warning applies to most models of CPAP or bilevel systems.
• The exhaust vent flow is lower at lower mask pressures (see
“Pressure/Flow Curve” on page 9). If the mask pressure during
expiration is too low, there may not be enough exhaust vent
flow to completely flush the air delivery hose of exhaled air
before the start of the next inspiration.
• The MIRAGE ACTIVA features an elbow that can be easily
removed while the mask is fitted. The mask should not be
used with the elbow attached unless the CPAP or bilevel
system is turned on and operating properly.
• The mask must be cleaned and disinfected/sterilised if it is
used between patients. Refer to the section “Cleaning the
Mask between Patients” for details.
• If oxygen is used with the CPAP or bilevel device, the oxygen
flow must be turned off when the flow generator is not
operating.
Explanation of the Warning: When the CPAP or bilevel
device is not in operation, and the oxygen flow is left on,
oxygen delivered into the ventilator tubing may accumulate
within the flow generator enclosure. Oxygen accumulated in
the CPAP or bilevel device enclosure will create a risk of fire.
This warning applies to most types of CPAP or bilevel flow
generators.
• Please refrain from smoking while oxygen is in use.
Note: At a fixed flow rate of supplemental oxygen flow, the inhaled
oxygen concentration will vary depending on: pressure settings,
patient breathing pattern, mask selection and leak rate.
PARTS OF THE MASK
See Figure A for a list of all parts.
60880r2.book Page 2 Thursday, October 20, 2005 11:55 AM