Hoffrichter 5CPD10, Руководство пользователя

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Chapter 5: Therapy Modes 59
APAP mode
Automatic positive airway pressure
Main features
•
Automatic adjustment of the therapeutic pressure (CPAP)
•
Pressure controlled
•
Independent respiration
APAP mode is an extension to CPAP mode and offers the additional function of automatic
adjustment to the therapeutic pressure (CPAP) within specific limits. When obstructive
events are detected
1
, the pressure is increased until the airways are almost completely
open or the upper pressure limit has been reached. In case of central events and normal
breathing, however, the pressure is reduced until the low pressure limit is reached. For
high therapy comfort, the therapeutic pressure should always be as high as necessary
and as low as possible. In addition, the speed of the pressure increase can be adapted
to the patient’s special needs in 5 stages.
Secondary features
•
Obstructive apnoea
•
Central apnoea
• Hypopnoea
•
Snoring
•
Normal breathing
20
10
0
Pressure
t
p (hPa)
Upper
pressure limit
Low
pressure limit
1
2
3
4
6
5
Low pressure limit = 4 hPa upper pressure limit = 18 hPa pressure = 8 hPa
Obstructive apnoea detected  Pressure increase
Spontaneous breathing  Pressure decrease
Obstructive apnoea detected

Pressure increase
Central apnoea detected

Pressure decrease
Spontaneous breathing  Pressure decrease
Low pressure limit reached
Figure 21: APAP mode diagram
1 Detection via forced oscillation technique (FOT)