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RT203 PFT exam with Complete Solutions
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RT203 PFT exam with Complete Solutions
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RT203 PFT exam with Complete SolutionsA loss of elasticity of the lung tissue will cause the FRC to: - ANSWER-decrease
A restrictive defect is present when lung volumes are reduced to less than what
percentage of predicted levels? - ANSWER-80%
According to Wilkens, what is the standard deviation from predicted mean that should
be considered as a normal reference range when more then one test is run. -
ANSWER-+ or - 2 SD
Although limited in clinical usefulness, the expiratory reserve volume may be reduced
in... - ANSWER-obesity, restrictive disorder, patients making a poor effort during testing
How would the inspiratory reserve volume and the inspiratory reserve capacity be
described in a patient with a mild to moderate restrictive disorder? - ANSWER-normal
in a patient with exacerbation of asthma, airway resistance will be... - ANSWER-
increased
In which of the following diseases will the open-circuit nitrogen washout method tend to
underestimate the total lung volume? - ANSWER-emphysema
MVV measures.... - ANSWER-muscle strength, lung compliance, patient effort
obstructive lung disorders are characterized by a reduction in... - ANSWER-expiratory
flows
The body plethysmograph uses which of the following gas laws? - ANSWER-boyle's law
The closed-system helium dilution method is used to measure: - ANSWER-FRC
The concentration of carbon monoxide used in a DLCO study is approximately: -
ANSWER-0.4%
The DLCO is a test that is used to measure the: - ANSWER-ability of a gas to move
across the alveolar-capillary membrane.
the reason why carbon monoxide is used in DLOC studies instead of oxygen is because
carbon monoxide is.... - ANSWER-diffusion limited and not perfusion limited
The volume of air inhaled and exhaled during quiet breathing is known as the: -
ANSWER-tidal volume
To determine whether there is a positive response to bronchodilator therapy,
improvement must be seen in... - ANSWER-FVC1/FVC, FEV1, FEV1.
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