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Definition of overdistension:
The term overdistension describes an excessive expansion of the
alveoli, which is very often caused by either high tidal volumes and / or high
end-expiratory lung volumes resulting from high PEEP levels.
In EIT, overdistension can be expected whenever a major loss of
ventilation is observed during PEEP trials in the non-dependent lung
areas towards higher airway pressures. During pressure controlled
ventilation this loss of ventilation can also be interpreted as reduction of
regional compliance.
Step 2: Perform PEEP trial analysis
1. Prepare analysis
Make sure that every PEEP level is represented by one section of appropriate
length. Manually adjust section positions if necessary.
D
-30760-2017