At what pressure is pressure support not high enough to contribute significantly to ventilatory support but is sufficient to overcome the work imposed by the ventilator system?

Question

Quizplus · Accepted Answer

When pressure support is reduced to about 5 cm H₂O,the pressure level is not high enough to contribute significantly to ventilatory support.However,this level of support usually is sufficient to overcome the work imposed by the ventilator system (i.e. ,the resistance of the ET tube,trigger sensitivity,demand-flow capabilities,and the type of humidifier used).

At What Pressure Is Pressure Support Not High Enough to Contribute