RT203 PFT Exam; Questions and Answers 100%
Verified
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
, RT203 PFT Exam; Questions and Answers 100%
Verified
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
The closed-system helium dilution method is used to measure: Correct
Answer-FRC
Verified
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
, RT203 PFT Exam; Questions and Answers 100%
Verified
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
The closed-system helium dilution method is used to measure: Correct
Answer-FRC
