Which of the following are features of plethysmography?
I.It is quite rapid.
II.Successive FRC measurements can be made.
III.It measures ventilated air space.
IV.It measures nonventilated air space.

Question

Quizplus · Accepted Answer

The plethysmographic method is quite rapid; successive functional residual capacity (FRC) measurements can be made as the patient pants against the occluded mouthpiece. This technique measures the ventilated and nonventilated air spaces.

Which of the Following Are Features of Plethysmography