Volume controlled ventilation
We can put a certain volume of air into the patient with each breath in mechanical ventilation.
Pressure controlled ventilation
We can put air into the patient until the pressure reaches a certain value.
We can decide how often we give the patient a breath each minute.
For example we can give a certain volume of gas , but the flow rate will determine whether we give that volume slowly or quickly over that breath.
In other words the oxygen concentration we give to the patient, from 21% (room air) to 100%.
Maximum pressure in the proximal airway at the end of inspiration
Equilibrium pressure reached if the expiratory tubing is occluded at the end of inspiration. It is a surrogate for end-inspiratory alveolar pressure
What triggers the breath?
Do we have the patient decide when they want to breathe, or do we have the ventilator decide when to initiate a breath. Or indeed a combination of the two? Is it ventilator controlled or patient controlled?
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Originally posted 2015-03-24 07:00:21. Republished by Blog Post Promoter