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RPFT Practice Exam With Correct Questions and
Detailed Answers | Graded A+
What is the threshold for a clinically significant change in lung function from the beginning
to the end of a methacholine challenge test? - Correct Answer-A decline of more than 20% in
FEV1
What is the most common reason for an unstable zero reading from an infrared analyzer? -
Correct Answer-Debris in the sampling system
When performing an exercise (stress) test on a patient with severe COPD the patient shows
signs of increasing suspension, measurements of IC decreased from 2.0 to 1.5 L. What most
likely occurred? - Correct Answer-Acute decreases in FRC
What values are needed to calculate cardiac output? - Correct Answer-PH, PaO2, SaO2,
SvO2, PvO2, VO2, & Hb
What May cause a reduction in end tidal CO2? - Correct Answer-Anxiety induced
hyperventilation
During an exercise study, the RER will equal the RQ only when the patient is at... - Correct
Answer-Steady state
What medication will cause an asthma pt to experience horseless? - Correct Answer-
Leukotriene antagonist
At the end of a progressive exercise study of a healthy adult male, RER would be
approximately what value? - Correct Answer-1.00
During exercise a subjects oxygen consumption increases out of proportion to his cardiac
output. This is due to an increase in... - Correct Answer-Coronary blood flow
PFT performed on a patient with tracheal stenosis May demonstrate increased... - Correct
Answer-FIF50
What is a valid reason for using biologic controls for DLCO? - Correct Answer-Assessing
accuracy of the volume measuring device
A treadmill belt stops for a fraction of a second each time the patient takes a step. A PFT tech
should - Correct Answer-Tighten the belt
In a person with neuromuscular disease, which of the following is the best way to detect
airway obstruction? - Correct Answer-MVV
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RPFT Practice Exam With Correct Questions and
Detailed Answers | Graded A+
What is the threshold for a clinically significant change in lung function from the beginning
to the end of a methacholine challenge test? - Correct Answer-A decline of more than 20% in
FEV1
What is the most common reason for an unstable zero reading from an infrared analyzer? -
Correct Answer-Debris in the sampling system
When performing an exercise (stress) test on a patient with severe COPD the patient shows
signs of increasing suspension, measurements of IC decreased from 2.0 to 1.5 L. What most
likely occurred? - Correct Answer-Acute decreases in FRC
What values are needed to calculate cardiac output? - Correct Answer-PH, PaO2, SaO2,
SvO2, PvO2, VO2, & Hb
What May cause a reduction in end tidal CO2? - Correct Answer-Anxiety induced
hyperventilation
During an exercise study, the RER will equal the RQ only when the patient is at... - Correct
Answer-Steady state
What medication will cause an asthma pt to experience horseless? - Correct Answer-
Leukotriene antagonist
At the end of a progressive exercise study of a healthy adult male, RER would be
approximately what value? - Correct Answer-1.00
During exercise a subjects oxygen consumption increases out of proportion to his cardiac
output. This is due to an increase in... - Correct Answer-Coronary blood flow
PFT performed on a patient with tracheal stenosis May demonstrate increased... - Correct
Answer-FIF50
What is a valid reason for using biologic controls for DLCO? - Correct Answer-Assessing
accuracy of the volume measuring device
A treadmill belt stops for a fraction of a second each time the patient takes a step. A PFT tech
should - Correct Answer-Tighten the belt
In a person with neuromuscular disease, which of the following is the best way to detect
airway obstruction? - Correct Answer-MVV
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