The pressure support level is automatically adjusted by the ventilator to maintain appropriate breathing frequency,tidal volume,and end-tidal carbon dioxide,depending on the patient's pathologic condition.This mode description pertains to which of the following ventilator control types?
A) Adaptive
B) Set-point
C) Knowledge-based
D) Neurally adjusted ventilatory assist

Question

Quizplus · Accepted Answer

The knowledge-based control type has the set-points automatically adjusted according to a rule-based expert system,such as breathing frequency,tidal volume,and end-tidal carbon dioxide levels.An example of this kind of control type is SmartCare on the Dräger EvitaXL.The adaptive control type changes set-point types based on the patient's changing condition.For example,mandatory breaths are pressure limited,and this pressure-limit setting is automatically adjusted between breaths to achieve the preset tidal volume.In the set-point control type,the output of the ventilator automatically matches a constant operator-preset input value.Neurally adjusted ventilatory assist is not a control type.It is a mode that adjusts set-points automatically,based on the electrical activity of the diaphragm and the level of response to the electrical activity as set by the operator.

The Pressure Support Level Is Automatically Adjusted by the Ventilator