Pressure ramp (pressure increase time)
A pressure ramp (or the pressure increase time) denes the time in which the pressure
increases from the PEEP to the inspiration pressure. This pressure increase time can
be set by the shape of the ramp: at, medium and steep.
<0.2seconds: steep Approx. 0.2seconds: medium Approx. 0.4seconds: at
Pressure ramps using the example of a BiLevel + ASB curve
Pressure
Time
TI = T
insp
∆pASB
1/Freq.
(spontaneous)
1/Freq. (set)
P
max
P
insp
Pressure
ramp
dP
dT
PEEP
assisted spontaneous
respiration
mechanical
ventilation
dP
dT