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 e...
PFT Midterm Exam Questions Answered
Right
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
The closed-system helium dilution method is used to measure: - Correct Answer FRC
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