Smiths Medical Pneupac babyPAC 100, User Manual

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It should be noted that if a PEEP level greater than 10 x100Pa has been set then the cycling
of the ventilator will not be detected but the constant positive inflation pressure alarm
becomes activated. The audible component of this alarm will be silenced by depression of
the silence button. A second depression of this button after the silence visual indicator has
ceased is interpreted as an acknowledgement by the operator that this is an intended
condition and so the alarm remains muted while the inflation pressure remains above 10
x100Pa. If a disconnection should occur the high PEEP level will not be maintained and the
disconnect alarm will operate after 8 seconds. Both the audible and visual alarms reset
when the alarm condition no longer exists.
10. High Inflation Pressure / Constant Positive Inflation Pressure Alarm
A high priority audible and visual alarm will operate to warn the user of a possible danger to
the patient if the inflation pressure remains at a positive pressure above the preset pressure
threshold of 10 x100Pa but below the set high alarm pressure for a period exceeding 8
seconds.
Because this can also occur with the intended application of high levels of PEEP (above 10
x100Pa) the audible component of this alarm can be muted as described under 9 on Page 14.
However, the visual component is maintained for the duration of this pressure’s presence to
remind the operator that a high level of PEEP is still being used.
See ‘WARNING’ in section 3, page 11, concerning oxygen concentration changes.
11. Supply Gas Failure Alarms
Two mechanically operated visual alarms are provided to give warning if either of the
supply gases is below the pressure required to operate the ventilator. With low pressure they
show red, with adequate pressure they show white for the oxygen supply or black and white
for the air supply respectively.
The babyPAC ventilator will operate to specification on oxygen only (giving an output of
45% (approx.) - 100% oxygen concentration), air only (21% oxygen concentration
output)
or oxygen and air (21% - 70% oxygen concentration output). Any visible red on the alarm
for a required gas indicates that the respective supply cylinder should be changed.
Whenever the babyPAC ventilator is operating on one gas only the ‘single gas operation’
LED (26) indicator gives a burst of three flashes every 30 seconds.
The visual indication of the failure of either one of two gas supplies is accompanied by an
electronically generated medium priority* audible alarm. This alarm can be silenced for 60
seconds by depression of the silencing button. A second depression of this button after this
60 second period is interpreted as an acknowledgement by the operator that single gas
operation is intentional and so the second gas failure alarm is then muted for the remainder
of the ventilation or until a second gas supply is restored. Both the ‘single gas operation’ and
the ‘muted’ indicators continue to flash appropriately whilst the muted condition persists.
If the ventilator is switched on with only one gas supply pressurised this is taken as being an
intended condition and no audible alarm is sounded for gas failure.
With both the conditions described above the ‘single gas supply’ indicator will flash every
30 seconds to remind the operator that ‘single gas operation’ has been selected.
The operator is alerted to the failure of a single gas supply by an electronically generated
medium priority audible alarm, which sounds for 60 seconds. After this time the alarm
system will switch itself off in order to protect the battery if the ventilator is left in a
potential alarm condition after use.
* See Section 8(e) & (f) for explanation of symbols and description of alarm priorities.