PFT Study Guide Questions with Complete Solutions

PFT Study Guide Questions with Complete
Solutions
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

, PFT Study Guide Questions with Complete
Solutions
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*