Question 1

To measure FRC in a body plethysmograph,the VTG should be measured by:

Accepted Answer

A)  Closing the shutter at a point of zero flow 
B)  Having the patient pant rapidly and deeply 
C)  Closing the shutter at end-expiration 
D)  Performing a combined Raw/VTG maneuver 
A)  Closing the shutter at a point of zero flow 
B)  Having the patient pant rapidly and deeply 
C)  Closing the shutter at end-expiration 
D)  Performing a combined Raw/VTG maneuver C

Question 2

A subject has these lung volumes measured using a body plethysmograph:   These values are consistent with:

Accepted Answer

A)  An obstructive pattern such as emphysema 
B)  A restrictive pattern such as sarcoidosis 
C)  Normal lung volumes 
D)  A calculation error involving the FRC 
A)  An obstructive pattern such as emphysema 
B)  A restrictive pattern such as sarcoidosis 
C)  Normal lung volumes 
D)  A calculation error involving the FRC C

Question 3

A subject in a plethysmograph has his Raw measured as 2.2 cm H2O/L/sec at a lung volume of 3.7 L.The calculated sGaw for this patient is which of the following?

Accepted Answer

A)  0.59 cm H2O/L/sec/L 
B)  0.45 cm H2O/L/sec/L 
C)  0.27 cm H2O/L/sec/L 
D)  0.12 cm H2O/L/sec/L 
A)  0.59 cm H2O/L/sec/L 
B)  0.45 cm H2O/L/sec/L 
C)  0.27 cm H2O/L/sec/L 
D)  0.12 cm H2O/L/sec/L D

Question 4

Calculate the FRC from the closed-circuit method using the following data:

Accepted Answer

A)  4.50 L (BTPS) 
B)  3.99 L (BTPS) 
C)  3.77 L (BTPS) 
D)  2.24 L (BTPS) 
A)  4.50 L (BTPS) 
B)  3.99 L (BTPS) 
C)  3.77 L (BTPS) 
D)  2.24 L (BTPS)

Question 5

To measure accurately the VTG (FRCpleth),the patient should be instructed to do which of the following?

Accepted Answer

A)  Breathe normally during closure of the shutter. 
B)  Pant rapidly and deeply. 
C)  Pant about once per second. 
D)  Hold his or her breath as soon as the shutter closes. 
A)  Breathe normally during closure of the shutter. 
B)  Pant rapidly and deeply. 
C)  Pant about once per second. 
D)  Hold his or her breath as soon as the shutter closes.

Question 6

The following FRCpleth values are obtained with a body plethysmograph: Maneuver 1: 2.35 L
Maneuver 2: 2.30 L
Maneuver 3: 2.15 L
According to the ATS-ERS standards,what should the technologist's next step be?

Accepted Answer

A)  Report the mean of the three maneuvers 
B)  Perform another maneuver 
C)  Report the largest value 
D)  Report the median value 
A)  Report the mean of the three maneuvers 
B)  Perform another maneuver 
C)  Report the largest value 
D)  Report the median value

Question 7

A subject has the following results from spirometry and N2 washout FRC determination:   Which of the following best explains these findings?

Accepted Answer

A)  The subject has normal lung volumes. 
B)  The subject has severe air trapping. 
C)  A leak occurred during the VC test. 
D)  A leak occurred during the FRC test. 
A)  The subject has normal lung volumes. 
B)  The subject has severe air trapping. 
C)  A leak occurred during the VC test. 
D)  A leak occurred during the FRC test.

Question 8

The reported value for VTG (FRCpleth)should be:

Accepted Answer

A)  Averaged from three acceptable maneuvers 
B)  The largest value from three acceptable maneuvers 
C)  Reproducible within 1% 
D)  Measured with the subject panting at 5 Hz 
A)  Averaged from three acceptable maneuvers 
B)  The largest value from three acceptable maneuvers 
C)  Reproducible within 1% 
D)  Measured with the subject panting at 5 Hz

Question 9

A patient with pulmonary fibrosis has lung volumes measured using the open-circuit method and by plethysmography with the following results:   Which of the following best explains these results?

Accepted Answer

A)  This is a normal pattern for the patient's diagnosis. 
B)  The FRC by N2 washout is erroneously low. 
C)  The VTG is erroneously low. 
D)  The predicted FRC is incorrect. 
A)  This is a normal pattern for the patient's diagnosis. 
B)  The FRC by N2 washout is erroneously low. 
C)  The VTG is erroneously low. 
D)  The predicted FRC is incorrect.

Question 10

A subject has the following lung volumes measured using a body plethysmograph:   These values are consistent with which of the following?

Accepted Answer

A)  An obstructive pattern such as emphysema 
B)  A restrictive pattern such as sarcoidosis 
C)  Normal lung volumes 
D)  A calculation error involving the FRC 
A)  An obstructive pattern such as emphysema 
B)  A restrictive pattern such as sarcoidosis 
C)  Normal lung volumes 
D)  A calculation error involving the FRC

Question 11

The following raw data are obtained from spirometry and a He-dilution FRC test (all values have been corrected to BTPS):   What is the patient's TLC?

Accepted Answer

A)  5.5 L (BTPS) 
B)  6.0 L (BTPS) 
C)  4.7 L (BTPS) 
D)  7.3 L (BTPS) 
A)  5.5 L (BTPS) 
B)  6.0 L (BTPS) 
C)  4.7 L (BTPS) 
D)  7.3 L (BTPS)

Question 12

By performing a combined Raw and VTG maneuver in a plethysmograph,a subject has the following values determined:   This subject's sGaw (specific conductance)would be:

Accepted Answer

A)  0.04 L/sec/cm H2O/L 
B)  0.17 L/sec/cm H2O/L 
C)  0.67 L/sec/cm H2O/L 
D)  1.50 L/sec/cm H2O/L 
A)  0.04 L/sec/cm H2O/L 
B)  0.17 L/sec/cm H2O/L 
C)  0.67 L/sec/cm H2O/L 
D)  1.50 L/sec/cm H2O/L

Question 13

A subject with an FEV1/FVC ratio of 37% performs a 7-minute N2 washout test. After 7 minutes,the alveolar N2 concentration is 5.7%.This is consistent with which
Of the following?

Accepted Answer

A)  Chronic bronchitis 
B)  Idiopathic pulmonary fibrosis 
C)  Pneumoconiosis 
D)  A right-to-left shunt 
A)  Chronic bronchitis 
B)  Idiopathic pulmonary fibrosis 
C)  Pneumoconiosis 
D)  A right-to-left shunt

Question 14

During an SBN2 test,an increased slope of phase III is:

Accepted Answer

A)  Consistent with severe restrictive disease 
B)  Indicative of uneven distribution of gas within the lungs 
C)  Usually caused by an accelerated heart rate 
D)  Diagnostic of increased anatomic dead space 
A)  Consistent with severe restrictive disease 
B)  Indicative of uneven distribution of gas within the lungs 
C)  Usually caused by an accelerated heart rate 
D)  Diagnostic of increased anatomic dead space

Question 15

What is the correct pant rate for measuring airway resistance or conductance?

Accepted Answer

A)  1.0 to 1.5 Hz 
B)  60 to 90 breaths/min 
C)  90 to 120 breaths/min 
D)  0.5 to 1.0 Hz 
A)  1.0 to 1.5 Hz 
B)  60 to 90 breaths/min 
C)  90 to 120 breaths/min 
D)  0.5 to 1.0 Hz

Question 16

A subject has the following measurements obtained during pulmonary function testing:   These findings are consistent with:

Accepted Answer

A)  Normal pulmonary function 
B)  Severe obstruction with air trapping 
C)  Mild restriction 
D)  A leak during the FRC determination 
A)  Normal pulmonary function 
B)  Severe obstruction with air trapping 
C)  Mild restriction 
D)  A leak during the FRC determination

Question 17

The following data are obtained from spirometry and a He dilution FRC test (all values have been corrected to BTPS):   What is the patient's RV/TLC ratio?

Accepted Answer

A)  22% 
B)  33% 
C)  38% 
D)  43% 
A)  22% 
B)  33% 
C)  38% 
D)  43%

Question 18

Which of the following is true when comparing dilutional lung volumes with body plethysmography in subjects who have severe obstruction?

Accepted Answer

A)  N2 washout overestimates TLC. 
B)  He rebreathing underestimates TLC. 
C)  Single-breath washout compares favorably with plethysmography. 
D)  Closed-circuit method overestimates FRC. 
A)  N2 washout overestimates TLC. 
B)  He rebreathing underestimates TLC. 
C)  Single-breath washout compares favorably with plethysmography. 
D)  Closed-circuit method overestimates FRC.

Question 19

Which of the following combinations are characteristic of a restrictive pattern?

Accepted Answer

A)  Reduced VC,reduced TLC,normal RV/TLC 
B)  Reduced FRC,elevated TLC,normal RV/TLC 
C)  Elevated RV,elevated TLC,elevated RV/TLC 
D)  Reduced FRC,elevated VTG 
A)  Reduced VC,reduced TLC,normal RV/TLC 
B)  Reduced FRC,elevated TLC,normal RV/TLC 
C)  Elevated RV,elevated TLC,elevated RV/TLC 
D)  Reduced FRC,elevated VTG

Question 20

A subject with an RV that is 60% of the predicted value and an RV/TLC ratio of approximately 20% would most likely have:

Accepted Answer

A)  An obstructive disease pattern 
B)  A restrictive disease pattern 
C)  Combined obstruction and restriction 
D)  Normal lung function 
A)  An obstructive disease pattern 
B)  A restrictive disease pattern 
C)  Combined obstruction and restriction 
D)  Normal lung function

To measure FRC in a body plethysmograph,the V_TGshould be measured by:

A subject has these lung volumes measured using a body plethysmograph: These values are consistent with:

A subject in a plethysmograph has his Raw measured as 2.2 cm H₂O/L/sec at a lung volume of 3.7 L.The calculated sGaw for this patient is which of the following?

Calculate the FRC from the closed-circuit method using the following data:

To measure accurately the V_TG(FRCpleth)_,the patient should be instructed to do which of the following?

The following FRC_pleth values are obtained with a body plethysmograph: Maneuver 1: 2.35 L Maneuver 2: 2.30 L Maneuver 3: 2.15 L According to the ATS-ERS standards,what should the technologist's next step be?

A subject has the following results from spirometry and N₂ washout FRC determination: Which of the following best explains these findings?

The reported value for V_TG (FRCpleth)should be:

A patient with pulmonary fibrosis has lung volumes measured using the open-circuit method and by plethysmography with the following results: Which of the following best explains these results?

A subject has the following lung volumes measured using a body plethysmograph: These values are consistent with which of the following?

The following raw data are obtained from spirometry and a He-dilution FRC test (all values have been corrected to BTPS): What is the patient's TLC?

By performing a combined Raw and V_TG maneuver in a plethysmograph,a subject has the following values determined: This subject's sGaw (specific conductance)would be:

A subject with an FEV₁/FVC ratio of 37% performs a 7-minute N₂ washout test. After 7 minutes,the alveolar N₂ concentration is 5.7%.This is consistent with which Of the following?

During an SBN₂ test,an increased slope of phase III is:

What is the correct pant rate for measuring airway resistance or conductance?

A subject has the following measurements obtained during pulmonary function testing: These findings are consistent with:

The following data are obtained from spirometry and a He dilution FRC test (all values have been corrected to BTPS): What is the patient's RV/TLC ratio?

Which of the following is true when comparing dilutional lung volumes with body plethysmography in subjects who have severe obstruction?

Which of the following combinations are characteristic of a restrictive pattern?

A subject with an RV that is 60% of the predicted value and an RV/TLC ratio of approximately 20% would most likely have:

Indications for Pulmonary Function Testing

Spirometry

Diffusing Capacity Tests

Ventilation and Ventilatory Control Tests

Blood Gases and Related Tests

Cardiopulmonary Exercise Testing

Pediatric Pulmonary Function Tests

Bronchoprovocation Testing

Specialized Test Regimens

Pulmonary Function Test Equipment

Quality Systems in the Pulmonary Function Laboratory

Reference Values and Interpretation Strategies

Filters

Exam 4: Lung Volumes,airway Resistance,and Gas Distribution Tests

To measure FRC in a body plethysmograph,the VTG should be measured by:

A subject has these lung volumes measured using a body plethysmograph: These values are consistent with:

A subject in a plethysmograph has his Raw measured as 2.2 cm H2O/L/sec at a lung volume of 3.7 L.The calculated sGaw for this patient is which of the following?

Calculate the FRC from the closed-circuit method using the following data:

To measure accurately the VTG (FRCpleth),the patient should be instructed to do which of the following?

The following FRCpleth values are obtained with a body plethysmograph: Maneuver 1: 2.35 L Maneuver 2: 2.30 L Maneuver 3: 2.15 L According to the ATS-ERS standards,what should the technologist's next step be?

A subject has the following results from spirometry and N2 washout FRC determination: Which of the following best explains these findings?

The reported value for VTG (FRCpleth)should be:

A patient with pulmonary fibrosis has lung volumes measured using the open-circuit method and by plethysmography with the following results: Which of the following best explains these results?

A subject has the following lung volumes measured using a body plethysmograph: These values are consistent with which of the following?

The following raw data are obtained from spirometry and a He-dilution FRC test (all values have been corrected to BTPS): What is the patient's TLC?

By performing a combined Raw and VTG maneuver in a plethysmograph,a subject has the following values determined: This subject's sGaw (specific conductance)would be:

A subject with an FEV1/FVC ratio of 37% performs a 7-minute N2 washout test. After 7 minutes,the alveolar N2 concentration is 5.7%.This is consistent with which Of the following?

During an SBN2 test,an increased slope of phase III is:

What is the correct pant rate for measuring airway resistance or conductance?

A subject has the following measurements obtained during pulmonary function testing: These findings are consistent with:

The following data are obtained from spirometry and a He dilution FRC test (all values have been corrected to BTPS): What is the patient's RV/TLC ratio?

Which of the following is true when comparing dilutional lung volumes with body plethysmography in subjects who have severe obstruction?

Which of the following combinations are characteristic of a restrictive pattern?

A subject with an RV that is 60% of the predicted value and an RV/TLC ratio of approximately 20% would most likely have:

Indications for Pulmonary Function Testing

Spirometry

Diffusing Capacity Tests

Ventilation and Ventilatory Control Tests

Blood Gases and Related Tests

Cardiopulmonary Exercise Testing

Pediatric Pulmonary Function Tests

Bronchoprovocation Testing

Specialized Test Regimens

Pulmonary Function Test Equipment

Quality Systems in the Pulmonary Function Laboratory

Reference Values and Interpretation Strategies

Filters

To measure FRC in a body plethysmograph,the V_TGshould be measured by:

A subject in a plethysmograph has his Raw measured as 2.2 cm H₂O/L/sec at a lung volume of 3.7 L.The calculated sGaw for this patient is which of the following?

To measure accurately the V_TG(FRCpleth)_,the patient should be instructed to do which of the following?

The following FRC_pleth values are obtained with a body plethysmograph: Maneuver 1: 2.35 L Maneuver 2: 2.30 L Maneuver 3: 2.15 L According to the ATS-ERS standards,what should the technologist's next step be?

A subject has the following results from spirometry and N₂ washout FRC determination: Which of the following best explains these findings?

The reported value for V_TG (FRCpleth)should be:

By performing a combined Raw and V_TG maneuver in a plethysmograph,a subject has the following values determined: This subject's sGaw (specific conductance)would be:

A subject with an FEV₁/FVC ratio of 37% performs a 7-minute N₂ washout test. After 7 minutes,the alveolar N₂ concentration is 5.7%.This is consistent with which Of the following?

During an SBN₂ test,an increased slope of phase III is: