User manual

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Spontaneous breathing may take place in the mode of continuous positive-pressure
breathing or inspiratory assistance up to the positive pressure value of 50 cm of H
2
O
(depending on the pressure limit).
In the PCMV mode, the following parameters can be set up, marked by luminous
spots: f
CMV
and f
SIMV
- ventilation frequency, PCV - pressure, I:E - relative length of
inspirium and expirium, Pressure Trigger - pressure trigger, PEEP - positive end expiratory
pressure, CPAP - continuous positive airway pressure, Oxygen - oxygen fraction in the
inspiratory mix, Flow Trigger - flow trigger.
In the volume-guided breath (CMV or SIMV), the gas flow is managed in such a way
as to supply the pre-determined volume in a given time interval in the given pre-determined
flow profile. The resulting pressure is a variable quantity and depends on the lung
compliance, as well as on the resistance of the airways and the tracheal tube.
Measurementtasks
1) Calculate minute ventilation for different combinations of values of the ventilation
frequency and breathing volume, which can be set up on the Veolar ventilator.
Consider the anatomical dead space of an adult person in the value of approximately
160 ml. For the above mentioned combinations, count the alveolar ventilation and
compare it with minute ventilation.
2)
Carry out the calibration of the flow screening according to the trainer’s instructions.
3)
Connect the ventilator to the artificial lung or the lung simulator according to the
trainer’s instructions.
4)
Set up the CMV mode on the ventilator with physiological parameters according to the
trainer’s recommendation, and observe the ventilator’s monitoring part.
5)
Observe the PEEP (positive end expiratory pressure) parameter’s influence on the
ventilation parameters.
6)
Observe the influence of the I:E parameter (the ratio between the inspirium and
expirium time) on the ventilation course.
7)
Observe different types of flow profiles.
8)
In the monitoring part, observe the ventilation parameters, such as PIP (peak
inspiratory pressure), etc.
9)
Find out the mechanical properties of the lungs on the ventilator, simulated by the
connected model. Observe the change in the flow resistance and the change in the lung
compliance.
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