PFT Study Guide UPDATED ACTUAL
Exam Questions and CORRECT Answers
Purpose of performing pulmonary function tests (PFTs) - CORRECT ANSWER --
Functional *status* of the *lungs*
- *How MUCH & how FAST GAS* can be moved into and out of the lungs
- *Diffusion characteristics* of the alveolar-capillary membrane
*the tests can dx. lung diseases & measure the severity of the disease*
Contraindications include: - CORRECT ANSWER - - pneumothorax (untreated)
- hemoptysis
- cardiovascular disease
- cataract removal surgery (ocular pressure)
Pulmonary function devices that collect and measure GAS volumes - CORRECT
ANSWER - - water sealed spirometer
- bellows spirometer
- dry-rolling-seal spirometer
Lung volumes - CORRECT ANSWER - how much air your lungs can hold
Spirometry determines - CORRECT ANSWER - how quickly you can move air in & out
of your lungs
Diffusing capacity - CORRECT ANSWER - how well your lungs add oxygen & remove
carbon dioxide
Parameters to establish normal values for PFTs - CORRECT ANSWER - -*G*ender
, -*H*eight
-*R*ace
- Age
What is the most important factor influencing lung size and predicted values? - CORRECT
ANSWER - *Height*
the taller the person, the larger are predicted lung volumes, flow rates, and diffusing capacity.
Lung volumes and flow rates are affected typically when the BMI is greater than: - CORRECT
ANSWER - *BMI>30*
as a person gains weight, lung volumes and flow rates do not changes until the person becomes
obese (BMI>30)
The instrument used primarily in PFT - CORRECT ANSWER - Spirometer (for measuring
routine *flows* & *volumes*)
Standard equipment in a pulmonary function laboratory - CORRECT ANSWER --
Spirometer
- Gas analyzer
- Body plethysmograph
What is the volume of air inhaled and exhaled during quiet breathing? - CORRECT
ANSWER - tidal volume (Vt)
Normal minute ventilation of an average person at rest - CORRECT ANSWER - 4 to 12
L/min
(depending of the size of the pt.)
Exam Questions and CORRECT Answers
Purpose of performing pulmonary function tests (PFTs) - CORRECT ANSWER --
Functional *status* of the *lungs*
- *How MUCH & how FAST GAS* can be moved into and out of the lungs
- *Diffusion characteristics* of the alveolar-capillary membrane
*the tests can dx. lung diseases & measure the severity of the disease*
Contraindications include: - CORRECT ANSWER - - pneumothorax (untreated)
- hemoptysis
- cardiovascular disease
- cataract removal surgery (ocular pressure)
Pulmonary function devices that collect and measure GAS volumes - CORRECT
ANSWER - - water sealed spirometer
- bellows spirometer
- dry-rolling-seal spirometer
Lung volumes - CORRECT ANSWER - how much air your lungs can hold
Spirometry determines - CORRECT ANSWER - how quickly you can move air in & out
of your lungs
Diffusing capacity - CORRECT ANSWER - how well your lungs add oxygen & remove
carbon dioxide
Parameters to establish normal values for PFTs - CORRECT ANSWER - -*G*ender
, -*H*eight
-*R*ace
- Age
What is the most important factor influencing lung size and predicted values? - CORRECT
ANSWER - *Height*
the taller the person, the larger are predicted lung volumes, flow rates, and diffusing capacity.
Lung volumes and flow rates are affected typically when the BMI is greater than: - CORRECT
ANSWER - *BMI>30*
as a person gains weight, lung volumes and flow rates do not changes until the person becomes
obese (BMI>30)
The instrument used primarily in PFT - CORRECT ANSWER - Spirometer (for measuring
routine *flows* & *volumes*)
Standard equipment in a pulmonary function laboratory - CORRECT ANSWER --
Spirometer
- Gas analyzer
- Body plethysmograph
What is the volume of air inhaled and exhaled during quiet breathing? - CORRECT
ANSWER - tidal volume (Vt)
Normal minute ventilation of an average person at rest - CORRECT ANSWER - 4 to 12
L/min
(depending of the size of the pt.)
