Breas Vivo 45 LS User Manual page 73

5.4.4.4 Pressure Controlled Ventilation with Target Volume (PCV+TgV)
The PCV+TgV mode acts as the PCV mode, but with an added regulation of the pres-
sure. Target volume is a feature that automatically adapts the pressure to make sure that
the Vivo 45 LS delivers the desired set target volume to the patient. For every breath,
the delivered volume is compared to the set target volume. The delivered pressure for
the next breath will be increased or decreased depending on the difference between the
delivered volume and the set target volume. Automatic pressure adjustments will be
made in between two adjustable limits (min pressure and max pressure) in order to
deliver the optimal support to the patient.
See 5.5.17 Target Volume, page 86 for more information about Target Volume.
5.4.4.5 PCV(A) – Assisted Pressure Controlled Ventilation
In the PCV(A) mode the ventilation is controlled by the ventilator, but the patient has
the possibility to start a breath through the Inspiratory Trigger. This patient triggered
breath will be delivered with the inspiratory time, rise time and pressure setting set by
the operator.
5.4.4.6 PCV(A+TgV) – Assisted Pressure Controlled Ventilation with Target
Volume
The PCV(A+TgV) mode acts like the PCV(A) mode, but with an added regulation of
the pressure. Target volume is a feature that automatically adapts the pressure to make
sure that the ventilator delivers the desired set target volume to the patient. The deliv-
ered volume is compared to the set target volume on a breath by breath basis. The deliv-
ered pressure for the next breath will be increased or decreased depending on the
difference between the delivered volume and the set target volume. Automatic pressure
adjustments will be made in between two adjustable limits (min pressure and max pres-
sure) in order to deliver the optimal support to the patient.
5.4.4.7 PCV-SIMV – Pressure Controlled Ventilation with Synchronized
Intermittent Mandatory Ventilation
In the PCV-SIMV mode, the ventilator synchronizes mandatory pressure-controlled
breaths with the patient's breathing efforts.
In this mode, the ventilator delivers mandatory pressure-controlled breaths with a preset
breath frequency defined as the SIMV Rate. The SIMV Rate setting determines the
length of the SIMV cycle.
For each SIMV cycle, there is an initial mandatory period in which the patient may trig-
ger one mandatory breath. This mandatory period is always 80% of the SIMV cycle time.
If the patient does not trigger a breath during this period, the ventilator will deliver one
mandatory breath automatically in the end of the period.
Doc. 007301 K-1
How to Use the Vivo 45 LS
User manual
73