Question 1

Which of the following is the most common cause of erroneous forced vital capacity (FVC) test results?

Accepted Answer

A) Maximal inspiratory effort 
B) Age of the patient 
C) Age of the equipment 
D) Suboptimal coaching 
A) Maximal inspiratory effort 
B) Age of the patient 
C) Age of the equipment 
D) Suboptimal coaching

Question 2

A restrictive defect is present when lung volumes are reduced to less than what percentage of predicted levels?

Accepted Answer

A) 60% 
B) 70% 
C) 80% 
D) 90% 
A) 60% 
B) 70% 
C) 80% 
D) 90%

Question 3

Which of the following tests is not considered for exercise testing?

Accepted Answer

A) Stress ECG 
B) Ventilatory capacity 
C) Anaerobic threshold 
D) DLCO 
A) Stress ECG 
B) Ventilatory capacity 
C) Anaerobic threshold 
D) DLCO

Question 4

The body plethysmograph uses which of the following gas laws?

Accepted Answer

A) Boyle's law 
B) Charles' law 
C) Gay-Lussac's law 
D) Combined gas law 
A) Boyle's law 
B) Charles' law 
C) Gay-Lussac's law 
D) Combined gas law

Question 5

When bronchoprovocation testing is used, the FEV₁ needs to decrease by what percentage before a diagnosis of hyperactive airways is made?

Accepted Answer

A) 10% 
B) 20% 
C) 50% 
D) 66% 
A) 10% 
B) 20% 
C) 50% 
D) 66%

Question 6

Which of the following diseases is not associated with a reduced DLCO?

Accepted Answer

A) Emphysema 
B) Chronic bronchitis 
C) Pulmonary embolus 
D) Pulmonary fibrosis 
A) Emphysema 
B) Chronic bronchitis 
C) Pulmonary embolus 
D) Pulmonary fibrosis

Question 7

The FEV₃ measurement is an indicator of flow in which airways?

Accepted Answer

A) Large 
B) Medium 
C) Small 
D) Medium and small 
A) Large 
B) Medium 
C) Small 
D) Medium and small

Question 8

What may cause the FVC to decrease in a patient with a restrictive lung disorder?

Accepted Answer

A) A decrease in lung size 
B) An increase in the expiratory reserve volume (ERV) 
C) A decrease in expiratory muscle mass 
D) An increase in airway resistance caused by the disease 
A) A decrease in lung size 
B) An increase in the expiratory reserve volume (ERV) 
C) A decrease in expiratory muscle mass 
D) An increase in airway resistance caused by the disease

Question 9

Which of the following tests is more sensitive than the FEV₁ in detecting airway obstruction?

Accepted Answer

A) FVC 
B) FEV1/FVC 
C) FEV3 
D) FEF25% to 75% 
A) FVC 
B) FEV1/FVC 
C) FEV3 
D) FEF25% to 75%

Question 10

Which of the following tests is often used preoperatively to evaluate whether the patient may have postoperative complications?

Accepted Answer

A) ABG analysis 
B) IC measurement 
C) MVV test 
D) PEF test 
A) ABG analysis 
B) IC measurement 
C) MVV test 
D) PEF test

Question 11

The maximal voluntary ventilation (MVV) test usually is performed over a period of:

Accepted Answer

A) 5 to 10 breaths. 
B) 12 to 15 seconds. 
C) 1 to 2 minutes. 
D) 5 to 10 minutes. 
A) 5 to 10 breaths. 
B) 12 to 15 seconds. 
C) 1 to 2 minutes. 
D) 5 to 10 minutes.

Question 12

Which of the following tests would be used to determine at what point oxygen consumption reaches its peak?

Accepted Answer

A) Exercise challenge 
B) Ventilatory capacity 
C) Anaerobic threshold 
D) Maximal oxygen uptake (   O₂max) 
A) Exercise challenge 
B) Ventilatory capacity 
C) Anaerobic threshold 
D) Maximal oxygen uptake (   O₂max)

Question 13

To determine whether there is a positive response to bronchodilator therapy, improvement must be seen in all of the following values except:

Accepted Answer

A) FVC. 
B) FEV1. 
C) FEF25% to 75%. 
D) FEF75% to 85%. 
A) FVC. 
B) FEV1. 
C) FEF25% to 75%. 
D) FEF75% to 85%.

Question 14

The closed-system helium dilution method is used to measure:

Accepted Answer

A) TLC. 
B) FVC. 
C) FRC. 
D) TV. 
A) TLC. 
B) FVC. 
C) FRC. 
D) TV.

Question 15

The normal FEV₁ to FVC ratio is approximately:

Accepted Answer

A) 50%. 
B) 66%. 
C) 75%. 
D) 90%. 
A) 50%. 
B) 66%. 
C) 75%. 
D) 90%.

Question 16

Obstructive lung disorders are characterized by a reduction in:

Accepted Answer

A) Lung capacities. 
B) Lung volumes. 
C) Expiratory flows. 
D) Inspiratory flows. 
A) Lung capacities. 
B) Lung volumes. 
C) Expiratory flows. 
D) Inspiratory flows.

Question 17

The presence of an FVC that is significantly smaller than the slow vital capacity (SVC) is consistent with:

Accepted Answer

A) poor inspiratory effort. 
B) use of a bronchodilator. 
C) air trapping. 
D) forced exhalation. 
A) poor inspiratory effort. 
B) use of a bronchodilator. 
C) air trapping. 
D) forced exhalation.

Question 18

The total lung capacity (TLC) is a function of all of the following except:

Accepted Answer

A) age. 
B) birth weight. 
C) gender. 
D) size. 
A) age. 
B) birth weight. 
C) gender. 
D) size.

Question 19

The ERV is limited in clinical usefulness.It may be reduced in all of the following cases except:

Accepted Answer

A) obesity. 
B) restrictive disorders. 
C) obstructive disorders. 
D) patients making a poor effort during testing. 
A) obesity. 
B) restrictive disorders. 
C) obstructive disorders. 
D) patients making a poor effort during testing.

Question 20

Which of the following associations' standards should be met before PFT equipment is purchased and used?

Accepted Answer

A) The American Lung Association 
B) The American College of Chest Physicians 
C) The Joint Commission 
D) The American Thoracic Society 
A) The American Lung Association 
B) The American College of Chest Physicians 
C) The Joint Commission 
D) The American Thoracic Society

Exam 9: Pulmonary Function Testing

Which of the following is the most common cause of erroneous forced vital capacity (FVC) test results?

A restrictive defect is present when lung volumes are reduced to less than what percentage of predicted levels?

Which of the following tests is not considered for exercise testing?

The body plethysmograph uses which of the following gas laws?

When bronchoprovocation testing is used, the FEV₁ needs to decrease by what percentage before a diagnosis of hyperactive airways is made?

Which of the following diseases is not associated with a reduced DLCO?

The FEV₃ measurement is an indicator of flow in which airways?

What may cause the FVC to decrease in a patient with a restrictive lung disorder?

Which of the following tests is more sensitive than the FEV₁ in detecting airway obstruction?

Which of the following tests is often used preoperatively to evaluate whether the patient may have postoperative complications?

The maximal voluntary ventilation (MVV) test usually is performed over a period of:

Which of the following tests would be used to determine at what point oxygen consumption reaches its peak?

To determine whether there is a positive response to bronchodilator therapy, improvement must be seen in all of the following values except:

The closed-system helium dilution method is used to measure:

The normal FEV₁ to FVC ratio is approximately:

Obstructive lung disorders are characterized by a reduction in:

The presence of an FVC that is significantly smaller than the slow vital capacity (SVC) is consistent with:

The total lung capacity (TLC) is a function of all of the following except:

The ERV is limited in clinical usefulness.It may be reduced in all of the following cases except:

Which of the following associations' standards should be met before PFT equipment is purchased and used?

Preparing for the Patient Encounter

The Medical History and the Interview

Cardiopulmonary Symptoms

Vital Signs

Fundamentals of Physical Examination

Neurologic Assessment

Clinical Laboratory Studies

Interpretation of Blood Gases

Chest Imaging

Interpretation of Electrocardiogram Tracings

Neonatal and Pediatric Assessment

Older Patient Assessment

Respiratory Monitoring in Critical Care

Vascular Pressure Monitoring

Cardiac Output Measurement

Bronchoscopy

Nutrition Assessment

Sleep and Breathing Assessment

Home Care Patient Assessment

Documentation

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