Operating Manual
ANNEX 2 – EXPLANATION OF PRESSURES
Software 2.6
B|BRAUN
Annex 2
Page 2 of 4
SHARING EXPERTISE
2.6_CA-EN_03
Relevant Pressures
PA
Arterial pressure PA
PBE
Arterial prefilter pressure
After the blood pump is started and adapted and the automatic
level adjustment of the arterial air chamber is activated, the
lower and upper PBE limits are set within ten seconds in the
therapy and reinfusion phase. The
momentary acquired
pressure (PBE Ref)
serves as reference for the calculation of
the alarm window.
Lower limit:
PBE min = (PBE Ref – 40) mmHg
Upper limit:
PBE max = (PBE Ref + 80) mmHg
The lower limit
PBE min
can be a
minimum of -100 mmHg
.
The upper limit
PBE max
can be a
maximum of +250 mmHg
.
TMP
Transmembrane pressure
The TMP is calculated as follows:
TMP = (PBE+PV) / 2 – PPL
The alarm limits can be set in 10 mmHg steps between 20 and
200 mmHg. The default setting is 100 mmHg.
PPL
Plasma pressure
PPF
Precipitate filter pressure
PDPA
Precipitate filter/adsorber pressure
drop
The PDPA is calculated as follows:
PDPA = PPF – PDF