20
WARNINGS
USING THE MASK
• The mask is intended to be used under the speci
fi
c
direction of a physician. It is used in conjunction with
non invasive ventilators in home, hospital and instituti-
onal environments.
• Masks may only be used after training by quali
fi
ed medi-
cal staff or persons with a respective education.
• The mask may only used after instruction by quali
fi
ed
medical personnel or persons, who have an appropri-
ate education.
• Do not use this mask unless the respiratory therapy
device is turned on and operating properly.
• However, when the device is not operating, enough
fresh air will not be provided through the mask, and
exhaled air may be re-breathed. At low pressures, the
air
fl
ow through the exhalation valve may not be enough
to clear all of the exhaled gas (CO
2
) from the mask. You
may breathe in some of the air that you have exhaled.
Rebreathing of exhaled air for longer times can in some
circumstances lead to suffocation.
• Never block the exhalation valve.
• Contact a health care professional if chest discomfort,
shortness of breath, stomach distention, belching, or
severe headache are experienced.
• Avoid eating or drinking three hours before using this
mask to minimize the risk of vomiting during sleep.
• Do not use this mask if you are taking drugs that may
cause vomiting.
USING OF OXYGEN
• When the device is not in operation, and the oxygen
fl
ow is left on, oxygen delivered into the ventilator tubing
may accumulate within the respiratory device enclo-
sure. Oxygen accumulated in the device enclosure will
create a risk of
fi
re.
• Oxygen supports combustion. Oxygen should not be
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