Lowenstein Medical elisa 300, Instructions For Use Manual, Page: 340 / 457

A 5 | Ventilation modes and parameters
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Instructions for Use elisa 300-500 | Supplement A | SW 2.09.x | Rev. 11
A 5.5.21
Volume-adaptive BiLevel
Synchronised, volume-targeted, pressure-controlled ventilation with dynamic ad-
justment of the mandatory ventilation pressure and spontaneous breaths during
the entire ventilation cycle.
This enhancement of the conventional BiLevel mode reduces the need for ad-
justments and prevents overdistension of the lungs with improving mechanics of
breathing.
With VA BiLevel the advantages of pressure-controlled ventilation are combined
with the possibility of unrestricted spontaneous breathing at both pressure levels
with a constant volume.
Each of the patient's inspiratory efforts (attaining the set trigger threshold) on the
PEEP level will trigger a synchronised mandatory breath. This allows the patient to
determine the timing and number of mandatory breaths.
Depending on the current lung situation, the ventilator adapts the upper pressure
level so that the set tidal volume is applied with the lowest possible inspiratory
pressure.
The Pmax and Pmin parameters determine a range in which the ventilator is
allowed to automatically readjust the necessary pressure to achieve the desired
tidal volume.