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Description
Using BIPAP-SIMV
BIPAP offers the option of weaning through the frequently used SIMV
concept and the benefits for the patient's spontaneous breathing of BIPAP
which have been discussed above.
In this situation ASB gives additional pressure support to spontaneous
breathing at the lower pressure levels. The frequency at which the pressure
changes is determined by IMV-frequency,
fw,
so that the inspiratoty time
remains constant and only the length of the lower pressure level (CPAP) is
changed. lnspiratory time results from the frequency. 1, and the TI:TE ratio
setting adapted to the patient's needs.
The resulting inspiratory time is displayed on the screen below the curve
display.
The other settings _ CPAP, pimp. and the steepness of pressure increase
from the lower to the upper pressure level are carried out in the same way as
for BIPAP.
If ASB is used to support spontaneous breathing at the lower pressure level,
the same steepness of pressure increase comes into operation.
Paw ,
I
p"v
__________
CPAP -
CL
Spontanem
,
breathing
with AsB
Tl
t
(1. TI:TE)
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