Covidien Puritan Bennett 560 User Manual page 19

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The exhalation block is intended for single use by a single patient
cleaned, but it cannot be disinfected or sterilised. To maintain good measurement quality when
used continuously, clean the exhalation block periodically (refer to section
Exhalation
reused with any other patient.
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During invasive ventilation (when an artificial airway bypasses the patient's upper respiratory
system), the patient's upper respiratory system cannot humidify the incoming gas. For this
reason, the use of a humidifier, to minimise drying of the patient's airway and subsequent
irritation and discomfort, must be used.
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If exhaled tidal volume measurements are required to ensure correct patient ventilation a double
limb patient circuit configuration must be used in order to detect leaks. In this case, both the
minimum and maximum VTE alarm parameters must be properly set to warn in the event of
patient disconnection.
•
Failing to replace a dirty air inlet filter, or operating the ventilator without a filter, may cause
serious damage to the ventilator.
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Before cleaning the ventilator, first disconnect the ventilator and the patient circuit.
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If the ventilator is used indoors, the condition of the air inlet filter should be checked monthly. If
the ventilator is used outdoors or in a dusty environment, the filter should be checked weekly
and replaced as necessary.
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The air inlet filter is not reusable; do not attempt to wash, clean, or reuse it.
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The patient circuit should always be positioned to avoid hindering the patient's movements, to
prevent accidental disconnection or leakage, and to minimise the risk of patient strangulation.
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For pediatric use, ensure that the patient circuit type fits, and, in all respects, is suitable for use
with a child. Use a pediatric circuit for patients that weigh under 53 lb. (23 kg). To ensure proper
performance of the ventilator, See Table F-2,
recommended patient circuits.
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Resistance of the exhalation valve and accessories (water traps, filters, HMEs etc) must be as low
as possible.
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Adding attachments to the ventilator breathing system can cause the pressure during exhalation
at the patient connection port to increase.
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The exhalation valve must allow rapid discharge of the circuit pressure. Ensure that the
exhalation valve is always clean and its evacuation aperture (exhaust port) is never obstructed.
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Users must always possess an additional breathing circuit and exhalation valve while using the
Puritan Bennett™ 560 Ventilator.
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Always ensure that the humidification device is positioned lower than both the ventilator and
the patient. Use water traps, if necessary, to limit water in the patient circuit and periodically
empty these water traps.
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If a heated humidifier is used, you should always monitor the temperature of the gas delivered
to the patient. Gas delivered from the ventilator that becomes too hot may burn the patient's
airway.
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Adding accessories to the ventilator breathing circuit, such as a humidifier and water trap(s), may
result in a decrease in tidal volume delivered to the patient due to the added compressible
volume of the accessory. Always assure that the patient is receiving the appropriate inspired
volume when altering the breathing circuit configuration.
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The level of inspiratory resistance of the circuit and accessories (bacteria filter, humidifier, HMEs
etc) must be as low as possible. Settings—particularly the PATIENT DISCONNECTION alarm,
maximum inspired volume (Max VTI), and minimum inspired volume (Min VTI) settings—must be
periodically adjusted according to changes in the patient circuit resistance—especially when
filters are replaced.
User's Manual
Block"). The exhalation block should be changed every 4 months and cannot be
List of Circuits, on page F-2, for a list of
Safety Information
. It may periodically be
7.3, "Cleaning the
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