The technologist is performing lung volume measurements with a pressure plethysmograph and notices a drift in the tracing after the first maneuver.What should the technologist do next?
A) Instruct the subject to increase the pant frequency.
B) Allow a longer period of time for thermal equilibration.
C) Release the door seal to allow the subject to rest.
D) Demonstrate how to pant with larger breaths.

Question

Quizplus · Accepted Answer

A drift in the tracing after the first maneuver may indicate that thermal equilibrium has not yet been reached. Allowing a longer period of time for thermal equilibration can help ensure accurate and consistent measurements. Instructing the subject to increase the pant frequency or pant with larger breaths may not address the underlying issue of thermal drift. Releasing the door seal to allow the subject to rest may also disrupt the measurement process.

The Technologist Is Performing Lung Volume Measurements with a Pressure