User manual

Chapter 1 Introduction
3
Patient
Circuits
The device should be used only with masks and connectors recommended
by Philips Respironics or with those recommended by the health care
professional or respiratory therapist. A mask should not be used unless the
device is turned on and operating properly. The exhalation port(s) associated
with the mask should never be blocked.
Explanation of Warning: The device is intended to be used with special masks
or connectors that have exhalation ports to allow continuous ow of air out
of the mask. When the device is turned on and functioning properly, new
air from the device ushes the exhaled air out through the mask exhalation
port. However, when the device is not operating, enough fresh air will not be
provided through the mask, and exhaled air may be rebreathed. Rebreathing
of exhaled air for longer than several minutes can in some circumstances
lead to suocation.
In the event of a power or device failure, audible and visual alarm signals will
activate. The device must be disconnected from the patient immediately. As
is the case with most ventilators with passive exhalation ports, when power
is lost, sucient air will not be provided through the circuit, and exhaled air
may be rebreathed.
At low EPAP pressures, the ow through the exhalation port may be inadequate
to clear all exhaled gas from the tubing. Some rebreathing may occur.
The device does not have an alarm to detect occlusion of the exhalation
port. Before each use, inspect the patient circuit to verify that the port is
not occluded. Occlusion or partial occlusion can reduce airow and result in
rebreathing of exhaled air.
Verify the operation of the Patient Disconnect alarm with any changes in the
patient circuit.