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248476r4.book Seite 36 Freitag, 28. Oktober 2011 3:10 15
Advanced Settings - Factory default settings and parameter ranges
Parameter
Min PS
Max PS
Rise Time
Fall Time
Ti Min
Ti Max
Trigger
36
Mode
Default
4 cm H
2
20 cm H
150
200
0.3 sec
2.0 sec
Medium
Description
O
Minimum pressure support in iVAPS mode.
Options: 0-20 cm H
O (Min PS always below
2
Max PS); 0.2 cm H
O increment
2
O
Maximum pressure support in iVAPS mode.
2
Options: 0-30 cm H
O; 0.2 cm H
2
Rise Time sets the time taken for the device to
pressurise to IPAP (see page 10).
Notes:
The Rise/Fall Time milliseconds scale is an
•
approximate only.
The actual Rise Time achieved is influenced by
•
factors including compliance, resistance, leak,
pressure differential and patient breathing
patterns.
Prolonged Rise Time inhibits pressurisation;
•
Care should be taken to ensure Rise Time is
set according to the patients inspiratory flow
and work of breathing. Patients with a high
work of breathing, short Ti and fast Respiratory
Rate will require shorter rise times than those
with lower Respiratory Rate, quiet breathing
and normal Ti.
Options: min, 150–900 (limited to 2/3 of Ti Max
or Ti); 50 increments
Fall Time sets the time taken for the device to
depressurise to EPAP/PEEP when cycling occurs
(see page 10).
Notes:
The Rise/Fall Time milliseconds scale is an
•
approximate only.
The actual Fall Time achieved is influenced by
•
factors including compliance, resistance, leak,
pressure differential and patient breathing
patterns.
Options: min, 100–400; 100 increments
Sets the minimum limit on the time the device
spends in IPAP (see page 9).
Options: 0.1 sec–Ti Max; 0.1 sec increments
Sets the maximum limit on the time the device
allows the patient to spend in inspiration (see
page 9).
Options: 0.3–4 sec or 2/3 of one breath cycle
defined by Backup Rate; 0.1 sec increments
Sets the sensitivity for triggering. Triggering
occurs when inspiratory flow increases above a
certain level and the device changes from EPAP
to IPAP (see page 9).
Options: very high, high, medium, low, very low
O increments
2
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Troubleshooting
