Exam (elaborations)
PFT Study Guide With 100% Correct Answers
- Course
- Institution
PFT Study Guide With 100% Correct Answers
[Show more]
Content preview
PFT Study Guide With 100% CorrectAnswers
Purpose of performing pulmonary function tests (PFTs) CORRECT ANSWERS -
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 ANSWERS - pneumothorax (untreated)
- hemoptysis
- cardiovascular disease
- cataract removal surgery (ocular pressure)
Pulmonary function devices that collect and measure GAS volumes CORRECT
ANSWERS - water sealed spirometer
- bellows spirometer
- dry-rolling-seal spirometer
Lung volumes CORRECT ANSWERS how much air your lungs can hold
Spirometry determines CORRECT ANSWERS how quickly you can move air in & out of
your lungs
Diffusing capacity CORRECT ANSWERS how well your lungs add oxygen & remove
carbon dioxide
Parameters to establish normal values for PFTs CORRECT ANSWERS -*G*ender
-*H*eight
-*R*ace
- Age
What is the most important factor influencing lung size and predicted values?
CORRECT ANSWERS *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 ANSWERS *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 ANSWERS Spirometer (for measuring
routine *flows* & *volumes*)
Standard equipment in a pulmonary function laboratory CORRECT ANSWERS -
Spirometer
- Gas analyzer
- Body plethysmograph
What is the volume of air inhaled and exhaled during quiet breathing? CORRECT
ANSWERS tidal volume (Vt)
Normal minute ventilation of an average person at rest CORRECT ANSWERS 4 to 12
L/min
(depending of the size of the pt.)
Why is proper coaching of the pt. during FVC maneuver extremely important?
CORRECT ANSWERS *ERRONEOUS FVC* test results
(most common)
Restrictive lung disorders reduce FVC by CORRECT ANSWERS shrinking the lung
(decrease in lung size)
Obstructive lung disorders reduce FVC by CORRECT ANSWERS increase in RV
(caused by air trapping)
If measured FVC is significantly smaller than SVC, what is occurring? CORRECT
ANSWERS air trapping
What level of VC is associated with *increased risk of postoperative respiratory
complications*? CORRECT ANSWERS <20 ml/kg
(reduced VC)
What level of VC is associated with *increased risk of respiratory failure*? CORRECT
ANSWERS <15 ml/kg
indicates that the ventilatory reserve is decreased enough to cause resp. failure
Total lung capacity (TLC) is a function of the persons CORRECT ANSWERS - *A*ge
- *R*ace
_ *G*ender
- *S*ize
*reported as the Measured volume and as % Predicted*
The body plethysmograph uses which gas law? CORRECT ANSWERS Boyles law
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller ElevatedExcellence. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
78600 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now