
2
WARNINGS
CPAP therapy should be used with caution if you have any of the following conditions:
•respiratory failure
•cavities or cysts in the lung (called bullae, and usually due to emphysema), or
previous history of pneumothorax
•previous history of severe nosebleed
•sinus infection.
Tell your doctor if you have any of these conditions. Your doctor will advise you
whether the likely benefits of CPAP therapy outweigh the expected risks.
Special care should be exercised if you are dehydrated, or may become dehydrated,
for example as a result of fluid restriction or diuretic therapy (including changes in
therapy).
Discontinue therapy and seek medical advice if, during therapy or when you start
therapy each night, you feel faint or light-headed.
The following are general warnings that pertain to your use of a RESMED S7
LIGHTWEIGHT unit. Specific warnings appear next to the relevant instructions in the
manual.
•This is NOT a life support device. It may stop operating with power failure
or if a fault occurs in the unit.
•The air flow for breathing produced by this device can be as much as 11oF (6oC)
higher than the temperature of the room. Caution should be exercised if the room
temperature is warmer than 90oF (32oC).
•The RESMED S7 LIGHTWEIGHT unit should only be used with masks (and
connectors)*recommended by ResMed, or by your physician or respiratory
therapist. A mask should not be used unless the RESMED S7 LIGHTWEIGHT unit is
turned on and operating properly. The vent hole or holes associated with the
mask should never be blocked.
Explanation: The RESMED S7 LIGHTWEIGHT unit is intended to be used with
special masks (or connectors)*which have vent holes to allow continuous flow of
air out of the mask. When the device is turned on and functioning properly, new
air from the device flushes the exhaled air out through the mask vent holes.
However, when the device is not operating, insufficient fresh air will be provided
through the mask, and the exhaled air may be rebreathed. Rebreathing of exhaled
air for longer than several minutes can, in some circumstances, lead to suffocation.
This applies to most models of CPAP devices.
•The RESMED S7 LIGHTWEIGHT unit should only be connected to the components,
humidifiers, or accessories specified in this manual. Connection of other items may
result in injury, or damage to the RESMED S7 LIGHTWEIGHT unit.
•At low pressures, the flow through the exhalation ports of your mask may not
clear all exhaled gas from the tubing. Some rebreathing may occur.
•This device is not intended for use with supplemental oxygen.
* Ports may be incorporated in the mask or in connectors that are near the mask.
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