A 5 | Ventilation modes and parameters
116
Instructions for Use elisa 300-500 | Supplement A |
SW 2.09.x
| Rev. 11
A 5.5.14
PAPS (Proportional Adaptive Pressure Support)
Contrary to the fixed pressure support in the PSV mode, the spontaneously
breathing patient receives proportional pressure support in the PAPS mode.
The effective pressure support in this mode adapts to the elevated elastic and
restrictive resistances. Tyler (1962) and M. Younes (from 1987) in Winnipeg estab
-
lished the fundamentals of this method. A special algorithm cyclically determines
the work of breathing due to higher flow and airway resistances and adapts the
pressure support required for compensation. This involves regular end-inspira-
tory occlusion to determine the surrogate parameters for compliance and resist-
ance and the determination of the work of breathing (WOB spont.).
In contrast to the PSV mode, there is no fixed, static pressure support for inspira
-
tion but patients receive pressure support in proportion to their own inspiratory
efforts: The harder the patient tries to inhale, the more support is provided by the
ventilator. This means that a positive airway pressure is generated, which remains
in proportion to the flow and volume generated by the patient trying to inhale.
The condition for an optimal adjustment is the assessment or measurement of
the elastic and restrictive properties of the lung by the user. The PAPS mode
resolves this issue by regular, automatic end-inspiratory measurements that form
the basis for the pre-set percentages for compliance and resistance compensa-
tion. In contrast to the conventional PSV pressure support ASB, there is no min
-
imum support in the presence of little respiratory efforts. That is why the PAPS
Summary of Contents for elisa 300
Page 3: ...elisa 300 elisa 500 Instructions for Use Basic Manual ...
Page 62: ...5 General information 60 Basic Instructions for Use elisa 300 500 SW 2 09 x Rev 11 ...
Page 217: ...elisa 300 elisa 500 Instructions for Use Supplement A Manoeuvres Functions Ventilation Modes ...
Page 351: ...CO2 Mainstream Sensor LeoCap Instructions for Use Supplement B ...
Page 379: ...Multi Gas Sensor LeoLyzer Instructions for Use Supplement C ...
Page 407: ...Pulse Oximetry and LeoClac Instructions for Use Supplement D ...
Page 437: ...Medical Equipment Interface elisa megs Instructions for Use Supplement F ...
Page 440: ...4 Instructions for Use Supplement F elisa megs Rev 03 This page is intentionally left blank ...