Which of the following is/are true about the flow-resistor breathing exerciser?
I.Exhaled gas flows unimpeded out a one-way valve.
II.Resistance is created by a variable-size orifice.
III.Imposed load varies with the rate of flow.

Question

Quizplus · Accepted Answer

Option I is true as exhaled gas is allowed to flow out through a one-way valve without any obstruction. Option II is true as the resistance is created by a variable-size orifice that allows the user to adjust the level of resistance for their breathing exercise. Option III is not true as the imposed load remains constant regardless of the rate of flow. Therefore, the correct answer is C: I and II.

Which of the Following Is/are True About the Flow-Resistor Breathing