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PFT Study Guide Questions and Answers
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PFT Study Guide Questions and Answers

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  • October 14, 2024
  • 10
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • pft study guide questions and answers

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  • RPFT
  • RPFT

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PFT Study Guide Questions and Answers

The instrument used primarily in PFT Correct Ans-Spirometer (for measuring routine
*flows* & *volumes*)




Standard equipment in a pulmonary function laboratory Correct Ans-- Spirometer

- Gas analyzer

- Body plethysmograph




What is the volume of air inhaled and exhaled during quiet breathing? Correct Ans-tidal
volume (Vt)




Normal minute ventilation of an average person at rest Correct Ans-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 Ans-
*ERRONEOUS FVC* test results

(most common)




Restrictive lung disorders reduce FVC by Correct Ans-shrinking the lung (decrease in lung
size)

, PFT Study Guide Questions and Answers
Obstructive lung disorders reduce FVC by Correct Ans-increase in RV (caused by air
trapping)




If measured FVC is significantly smaller than SVC, what is occurring? Correct Ans-air
trapping




What level of VC is associated with *increased risk of postoperative respiratory
complications*? Correct Ans-<20 ml/kg

(reduced VC)




What level of VC is associated with *increased risk of respiratory failure*? Correct Ans-<15
ml/kg




Purpose of performing pulmonary function tests (PFTs) Correct Ans-- 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 Ans-- pneumothorax (untreated)

- hemoptysis

- cardiovascular disease

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