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10.12 Ventilation Modes Specifications
10.12.1 VCV
VCV - Mandatory volume-controlled ventilation
Description:
In this mode, the respiratory rate, tidal
volume, and inspiratory flow (or
inspiratory ratio or time) are set.
The onset of inspiration (triggering)
occurs according to the pre-established
respiratory rate. triggering occurs
exclusively for time, if the sensitivity
setting is off.
The transition between inspiration and
expiration (cycling) occurs after release
of the pre-set tidal volume at given
velocity through the flow (or ratio or
inspiratory time).
Adjusted Parameters:
•
VOLUME
•
RATE
•
FLOW or RATIO or INS TIME
•
PEEP
•
O
2
CONCENTRATION
•
LIMIT PRESSURE
•
PAUSE (% or s)
•
PRESSURE TRIGGER
•
FLOW TRIGGER
•
FLOW WAVE
Note: Automatic backup
(1)
1 - Whenever the set apnea time is reached, the ventilator triggers
a ventilator cycle, the setting of which is based on the current
mode settings.
Once all ventilation parameters are received by the ventilator, it calculates the T
INS
, T
EXP
, T
PAUSE
and
I: E Ratio, as a function of the adjusted Flow, Pause, Wave and Frequency, thus obtaining all ventilation control
times.
