Bedfont NOxBOX mobile, Техническое руководство

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77
Poor quality NO cylinders can
contain high levels of NO
2
Connect a second supply cylinder to the alternate inlet
port. Open the cylinder and disconnect the previous
cylinder, forcing a cylinder changeover to see if this
resolves the issue.
The NO
2
high alarm is set to a
default value of 1.0ppm.
NO
2
is
extremely toxic and poses risk to
patient health,
The alarm value can be increased to a maximum of
5.0ppm if required. Please see INO guidelines for
more information on maximum NO
2
values during INO
therapy.
I
ncorrect placement of
NOxFLOW and sample line.
See ventilator circuit diagram for correct placement of
NOxFLOW and sample line.
Whilst in standby mode NO
2
can
build up in supply lines.
Purge supply lines (see cylinder change procedure).
Stagnant gas in manual bag circuit
causing NO
2
.
Purge manual bag circuit before connecting to
patient (see manual bagging procedure).
The NO
2
sensor may require
replacing.
If another system is not readily available and patient
requires therapy, engage the manual override mode,
replace the system as soon as practically
possible and alert the Service Engineer.
O
2
Low Monitored levels of O
2
gas being
delivered to the patient have fallen
below the alarm setting boundary.
Check sample line for blockages.
Check water trap (including barrel thread) for
damage and/or leaks.
Check sample line is correctly attached to ventilator
circuit and NOxBOX
i
water trap inlet.
Check no ventilator circuit breaks or leakages have
occurred.
The NO gas is balanced in N2, this
is an asphyxiant gas. At high NO
dose levels for low concentration
cylinders (e.g. 200 ppm) the level
of gas delivered into the ventilator
stream can reduce the % v/v of O
2
being delivered to the patient.
Check O
2
concentration setting at ventilator.
Adjust O
2
alarm value if deemed necessary.
The O
2
sensor may require
replacing.
If another system is not readily available and patient
requires therapy, engage the manual override mode,
replace the system as soon as practically
possible and alert the Service Engineer.
Water
trap full
Water trap is filled with
condensate from sample line. If the
water trap is allowed to
overflow, the sample path will block
and water ingress to the NOxBOX
i
system could damage the internal
mechanisms and gas sensors.
Delivery accuracy is compromised
and patient safety could be put at
risk.
Use disposable male-luer lock syringe contained in
NOXKIT to empty fluid from water trap via the
self-sealing drain tap located at the bottom of the water
trap. Dispose of entire syringe and contents according
to local directives (e.g. sharps waste).
The water trap uses a small float to activate the alarm,
if no moisture is present gently tap the
barrel to see if the alarm float is in the off position.