Weinmann MEDUVENT Standard - Page 124

124 EN MEDUVENT Standard
WM 67851 01/2021
10 Description of the modes
CPAP + PS mode can be separated into its individual elements:
• The CPAP/PEEP set value is used to increase the pressure level
of breathing in order to raise the functional residual capacity
(FRC) of spontaneously breathing patients.
• The PS function is used for pressure support of insufficient or
exhausted spontaneous breathing. The patient is able to
breathe spontaneously without any restriction, but is
supported in his or her breathing effort by the device.
Pressure is generally set at the end of expiration (PEEP). If
necessary, pressure support (ΔpPS) can also be switched on.
Ventilation can be individually adapted to the patient with the aid
of the inspiratory trigger. The inspiratory trigger indicates the
sensitivity for triggering of pressure support. The expiratory
trigger* determines when the device cancels pressure support. This
allows the administered volume and inspiration time to be set
indirectly. The set maximum pressure limit (pMax) ensures the
safety of the patient.
*Corresponds to a permanently set value of 35 % of maximum
inspiratory flow.
Druck
Zeit
1/Freq. (spontan) 1/Freq. (spontan)
CPAP / PEEP
CPAP ohne Druckunterstützung CPAP mit Druckunterstützung PS
∆pPS
pMax
Pressure
CPAP / PEEP
Time
ΔpPS
1/freq. (spontaneous)
1/freq. (spontaneous)
CPAP without pressure support
CPAP with pressure support PS
pMax
On switching to CPAP + PS mode, pMax is automatically reduced
to 20 mbar. A value < 20 mbar is retained.