The end point of a helium dilution test occurs when:
A) nitrogen is washed out.
B) there is no more helium.
C) the change in pressure remains steady.
D) the helium percentage remains steady for 2 minutes.

Question

Quizplus · Accepted Answer

The end point of the helium dilution test is reached when the helium percentage remains steady for 2 minutes,indicating that the helium is equilibrated between the spirometer and the patient's lungs.

The End Point of a Helium Dilution Test Occurs When