RT203 PFT Exam Questions With 100%
Correct Answers
what are the general purposes of performing
pulmonary function tests (PFTs)? - Correct Answer-
The functional status of the lungs; Diffusion
characteristics of the alveolar-capillary membrane;
How much and how fast gas can be moved into and
out of the lungs
What parameters have been studied to establish
normal values for PFTs? - Correct Answer-height,
weight, gender
what factor has the greatest influence on lung size
and predicted PFT values? - Correct Answer-height
what is the primary instrument used in performing
PFTs? - Correct Answer-spirometer
what is standard equipment in a pulmonary
function laboratory? - Correct Answer-Spirometer;
gas analyzer; Body plethysmograph
, The volume of air inhaled and exhaled during quiet
breathing is known as the: - Correct Answer-tidal
volume
what is the most common cause of erroneous FVC
test results? - Correct Answer-Suboptimal coaching
What may cause the FVC to decrease in a patient
with a restrictive lung disorder? - Correct Answer-a
decrease in lung size
Which level of VC is associated with increased risk
of respiratory failure? - Correct Answer-<15 ml/kg
Total lung capacity (TLC) is a function of: - Correct
Answer-size, age, gender
The body plethysmograph uses which of the
following gas laws? - Correct Answer-boyle's law
In which of the following diseases will the open-
circuit nitrogen washout method tend to
underestimate the total lung volume? - Correct
Answer-emphysema
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