The volume of gas actually delivered to a patient by most positive-pressure ventilation is always less than that expelled from the machine. Which of the following factors help to explain this finding?
I.gas compression under pressure
II.presence of built-in leaks
III.expansion of the ventilator circuitry

Question

Quizplus · Accepted Answer

Gas compression under pressure (factor I) leads to a smaller volume of gas being delivered to the patient, while the expansion of the ventilator circuitry (factor III) results in additional gas being lost. The presence of built-in leaks (factor II) can also contribute to gas loss but may not always be present. Therefore, factors I and III are the best choices to explain the finding.

The Volume of Gas Actually Delivered to a Patient by Most