The flow-type plethysmograph differs from the constant volume (variable-pressure)plethysmograph in which of the following ways?
A) Forced expiratory maneuvers can be performed with the door closed.
B) Flow boxes must be rigorously air-tight.
C) Thoracic gas volume cannot be measured directly.
D) Airway resistance can be measured in small children.

Question

Quizplus · Accepted Answer

In a flow-type plethysmograph, forced expiratory maneuvers can be performed with the door closed, unlike in a constant volume plethysmograph where the door must be open to allow for pressure changes.

The Flow-Type Plethysmograph Differs from the Constant Volume (Variable-Pressure)plethysmograph in Which