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RT203 PFT exam complete questions and answers
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RT203 PFT exam complete questions and answers
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RT203 PFT exam complete questionsand answers
what are the general purposes of performing pulmonary function tests (PFTs)?
CORRECT ANSWERS 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
ANSWERS height, weight, gender
what factor has the greatest influence on lung size and predicted PFT values?
CORRECT ANSWERS height
what is the primary instrument used in performing PFTs? CORRECT ANSWERS
spirometer
what is standard equipment in a pulmonary function laboratory? CORRECT ANSWERS
Spirometer; gas analyzer; Body plethysmograph
The volume of air inhaled and exhaled during quiet breathing is known as the:
CORRECT ANSWERS tidal volume
what is the most common cause of erroneous FVC test results? CORRECT ANSWERS
Suboptimal coaching
What may cause the FVC to decrease in a patient with a restrictive lung disorder?
CORRECT ANSWERS a decrease in lung size
Which level of VC is associated with increased risk of respiratory failure? CORRECT
ANSWERS <15 ml/kg
Total lung capacity (TLC) is a function of: CORRECT ANSWERS size, age, gender
The body plethysmograph uses which of the following gas laws? CORRECT
ANSWERS boyle's law
In which of the following diseases will the open-circuit nitrogen washout method tend to
underestimate the total lung volume? CORRECT ANSWERS emphysema
The closed-system helium dilution method is used to measure: CORRECT ANSWERS
FRC
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