Spirometers Flashcards
What is a spirometer?
A spirometer is a piece of equipment that measures the air capacity of the human lungs.
What is the definition of Tidal Volume?
Tidal Volume is the normal amount of air inhaled or exhaled per breath.
When does Tidal Volume increase?
Tidal Volume increases with exercise.
What is the definition of Expiratory Reserve Volume?
Expiratory Reserve Volume is the amount of air that can be forced out after tidal volume (after a normal inspiration).
When does Expiratory Reserve Volume decrease?
Expiratory Reserve Volume decreases during exercise.
What is the definition of Inspiratory Reserve Volume?
Inspiratory Reserve Volume is the amount of air that can be forced in after Tidal Volume (after a normal inspiration).
When does Inspiratory Reserve Volume decrease?
Inspiratory Reserve Volume decreases during exercise.
What is the definition of Residual Volume?
Residual Volume is the amount of air that remains in the lungs after maximal expiration. There is no change during exercise.
What is the definition of Vital Capacity?
Vital Capacity is the largest volume of air that can be forcibly expired after the deepest possible inspiration.
What is a Spirometer Trace?
A Spirometer Trace is a way of recording and drawing these volumes.
When does the pattern of trace change?
The pattern of the trace will change as the amount of air you inspire and expire changes as a result of exercise.
