Weinmann MEDUMAT Standard2 Instructions For Use Manual page 147

Pressure
pMax
Mechanical ventilation
pInsp
Pressure
ramp
dP
dT
PEEP
TI=T
The BiLevel + ASB mode is used for pressure-controlled ventilation
combined with free spontaneous respiration at pressure levels
pInsp and PEEP during the entire breathing cycle and for adjustable
pressure support at PEEP level. This mode is used on patients who
have no spontaneous respiration or on spontaneously breathing
patients. The patient can trigger a mandatory, pressure-controlled
mechanical breath during a predetermined trigger time slot. The
trigger time slot is 20% of the expiration time Te before the
anticipated mandatory mechanical breath. For the rest of the time,
the patient can breathe spontaneously or with the aid of pressure
support. Tidal volume and minute volume are determined by the
set pInsp, lung compliance and the set inspiration time T
BiLevel + ASB
Assisted spontaneous breathing
dP
dT
1/Freq.
insp
(spontaneous)
1/Freq. (set)
7 Description of the modes
MEDUMAT Standard
∆pASB
Time
.
i
2
EN 147