Siemens Drager medical Carina, Instructions For Use Manual, Page: 131 / 144

Instructions for Use Carina SW 3.n
131
Description
If the patient breathes in or out during mandatory
inspiration, inspiration pressure PIP does not
change for that ventilation stroke – only inspiration
flow and expiration flow adapt to patient demand.
The individually administered tidal volume VT may
differ from set tidal volume VT in single ventilation
strokes but the tidal volume VT administered on
average over time, is constant.
Initially, Carina administers the set tidal volume VT
with a volume-controlled ventilation stroke. The
inspiration pressure PIP determined for that venti-
lation stroke is used by the AutoFlow function as a
starting value for inspiration pressure.
Patient-oriented settings
The start of mandatory inspiration can be synchro-
nised with the patient's inhalation effort with the aid
of the variable flow trigger. In VC-SIMV, PC-AC and
PC-BIPAP, the flow trigger can be switched off com-
pletely.
The abruptness of the pressure rise from PEEP
level to inspiration level can be further adapted to
the patient's requirements in VC-SIMV, PC-BIPAP,
PC-AC and SPN-PS by using the Ramp ventilation
parameter.
045
Flow
V
T
PEEP
Paw
Paw
t
t
PIP
Ti T
e
f
1
Without spontane-
ous breathing With spontaneous
breathing