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e700 User Manual
5.2.3. BiLVL (Biphasic Positive Airway Pressure)
BiLVL mode is similar to SIMV but comes with pressure ventilation.
By setting both inhalation pressure (Pi) and exhalation pressure
(PEEP) levels, the ventilator will deliver pressure controlled
mandatory breaths at set rates (bpm). The default trigger for
spontaneous breathing window is 3 L/min but can be adjusted up
to 15 L/min.
Similar to SIMV, in BiLVL mode the selected breathing rate remains
constant and the time of spontaneous breathing window will change
instead if patient triggered the synchronized mandatory ventilation
before the normal start of the inhalation phase (beginning of Ti).
If no eff ort is detected during the trigger period, the ventilator
will initiate mandatory ventilation at the end of trigger window.
Should the patient demand more fl ow than set by user, he/she can
withdraw the excess from ambient.
PSV (Pressure Support Ventilation- Figure 12.b)
PSV is a form of assisted ventilation for the patient who is breathing
spontaneously but whose respirations are insuffi
cient. The ventilator
provides an inspiratory fl ow based on the patient’s inspiratory eff ort.
Ventilator sensitivity to the patient’s inspiratory eff ort is operator
adjusted by using the “Trig.” Control and the inspiratory fl ow rate is
tailored to the patient’s demand by the ventilator.
Note:
When calculating the peak/plateau pressure add the Pressure
Support level to the set PEEP level.