Question 1

The closing-volume (CV) test is used for early diagnosis of obstruction of airways of which of the following sizes?

Accepted Answer

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

Question 2

The MVV reflects all of the following except:

Accepted Answer

A) airway resistance. 
B) condition of respiratory muscles. 
C) condition of lung tissue. 
D) compliance of the lungs and thorax. 
A) airway resistance. 
B) condition of respiratory muscles. 
C) condition of lung tissue. 
D) compliance of the lungs and thorax. C

Question 3

Which of the following conditions is not a determinant of gas exchange across the membrane?

Accepted Answer

A) Amount of oxygen in the blood 
B) Thickness of the alveolar-capillary membrane 
C) Diffusion coefficient of carbon monoxide in the lungs 
D) Surface area of the membrane 
A) Amount of oxygen in the blood 
B) Thickness of the alveolar-capillary membrane 
C) Diffusion coefficient of carbon monoxide in the lungs 
D) Surface area of the membrane A

Question 4

How would the inspiratory reserve volume and the inspiratory reserve capacity be described in a patient with a mild to moderate restrictive disorder?

Accepted Answer

A) Normal 
B) Abnormally increased 
C) Abnormally decreased 
D) Not measured 
A) Normal 
B) Abnormally increased 
C) Abnormally decreased 
D) Not measured

Question 5

Which of the following factors has the greatest influence on lung size and predicted PFT values?

Accepted Answer

A) Gender 
B) Height 
C) Race 
D) Weight 
A) Gender 
B) Height 
C) Race 
D) Weight

Question 6

In which of the following diseases will the open-circuit nitrogen washout method tend to underestimate the total lung volume?

Accepted Answer

A) Asthma 
B) Emphysema 
C) Cystic fibrosis 
D) Chronic bronchitis 
A) Asthma 
B) Emphysema 
C) Cystic fibrosis 
D) Chronic bronchitis

Question 7

Which of the following is not a general purpose of performing pulmonary function tests (PFTs)?

Accepted Answer

A) The functional status of the lungs 
B) The diffusion characteristics of the alveolar-capillary membrane 
C) How much and how fast gas can be moved into and out of the lungs 
D) The specific diagnosis of pulmonary disease 
A) The functional status of the lungs 
B) The diffusion characteristics of the alveolar-capillary membrane 
C) How much and how fast gas can be moved into and out of the lungs 
D) The specific diagnosis of pulmonary disease

Question 8

Which of the following is the primary instrument used in performing PFTs?

Accepted Answer

A) Spirometer 
B) Flowmeter 
C) Thermistor 
D) Spirograph 
A) Spirometer 
B) Flowmeter 
C) Thermistor 
D) Spirograph

Question 9

The normal FEV₃ to FVC ratio is approximately:

Accepted Answer

A) 50%. 
B) 66%. 
C) 75%. 
D) 95%. 
A) 50%. 
B) 66%. 
C) 75%. 
D) 95%.

Question 10

Which of the following tests would be used to determine whether there is gross misdistribution of ventilation in the lungs of a patient given a diagnosis of emphysema?

Accepted Answer

A) DLCO 
B) Helium dilution 
C) Closing volume 
D) Nitrogen washout 
A) DLCO 
B) Helium dilution 
C) Closing volume 
D) Nitrogen washout

Question 11

The DLCO is a test that is used to measure the:

Accepted Answer

A) amount of carbon monoxide in the blood. 
B) thickness of the alveolar-capillary membrane. 
C) diffusion coefficient of carbon monoxide in the lungs. 
D) ability of a gas to move across the alveolar-capillary membrane. 
A) amount of carbon monoxide in the blood. 
B) thickness of the alveolar-capillary membrane. 
C) diffusion coefficient of carbon monoxide in the lungs. 
D) ability of a gas to move across the alveolar-capillary membrane.

Question 12

Which of the following tests would be used to determine at what point oxygen demand exceeds oxygen consumption during hard exercise?

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

Which of the following conditions are not common causes of restrictive lung disease?

Accepted Answer

A) Atelectasis and obesity 
B) Interstitial lung disease and lung scarring 
C) Chest wall dysfunction and neurologic disease 
D) Asthma and emphysema 
A) Atelectasis and obesity 
B) Interstitial lung disease and lung scarring 
C) Chest wall dysfunction and neurologic disease 
D) Asthma and emphysema

Question 14

Which of the following conditions is associated with a low FVC, low FEV₁ but normal FEV₁/FVC, small TLC, low DLCO, and no response to a bronchodilator?

Accepted Answer

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

Question 15

In a patient with an exacerbation of asthma, airway resistance will be:

Accepted Answer

A) normal. 
B) increased. 
C) decreased. 
D) impossible to measure. 
A) normal. 
B) increased. 
C) decreased. 
D) impossible to measure.

Question 16

Which of the following is not a parameter that has been studied to establish normal values for PFTs?

Accepted Answer

A) Gender 
B) Height 
C) Race 
D) Weight 
A) Gender 
B) Height 
C) Race 
D) Weight

Question 17

Which of the following medications is used most commonly during bronchoprovocation testing?

Accepted Answer

A) Methacholine 
B) Isoproterenol 
C) Methylene blue 
D) Metaproterenol 
A) Methacholine 
B) Isoproterenol 
C) Methylene blue 
D) Metaproterenol

Question 18

The reason why carbon monoxide is used in DLCO studies instead of oxygen is because carbon monoxide is:

Accepted Answer

A) more readily available than oxygen. 
B) neither diffusion nor perfusion limited. 
C) perfusion limited and not diffusion limited. 
D) diffusion limited and not perfusion limited. 
A) more readily available than oxygen. 
B) neither diffusion nor perfusion limited. 
C) perfusion limited and not diffusion limited. 
D) diffusion limited and not perfusion limited.

Question 19

What is the normal minute ventilation of an average person at rest?

Accepted Answer

A) 15 L/min 
A) 15 L/min

Question 20

Which of the following may decrease the FVC in a patient with an obstructive lung disorder?

Accepted Answer

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

Exam 9: Pulmonary Function Testing

The closing-volume (CV) test is used for early diagnosis of obstruction of airways of which of the following sizes?

The MVV reflects all of the following except:

Which of the following conditions is not a determinant of gas exchange across the membrane?

How would the inspiratory reserve volume and the inspiratory reserve capacity be described in a patient with a mild to moderate restrictive disorder?

Which of the following factors has the greatest influence on lung size and predicted PFT values?

In which of the following diseases will the open-circuit nitrogen washout method tend to underestimate the total lung volume?

Which of the following is not a general purpose of performing pulmonary function tests (PFTs)?

Which of the following is the primary instrument used in performing PFTs?

The normal FEV₃ to FVC ratio is approximately:

Which of the following tests would be used to determine whether there is gross misdistribution of ventilation in the lungs of a patient given a diagnosis of emphysema?

The DLCO is a test that is used to measure the:

Which of the following tests would be used to determine at what point oxygen demand exceeds oxygen consumption during hard exercise?

Which of the following conditions are not common causes of restrictive lung disease?

Which of the following conditions is associated with a low FVC, low FEV₁ but normal FEV₁/FVC, small TLC, low DLCO, and no response to a bronchodilator?

In a patient with an exacerbation of asthma, airway resistance will be:

Which of the following is not a parameter that has been studied to establish normal values for PFTs?

Which of the following medications is used most commonly during bronchoprovocation testing?

The reason why carbon monoxide is used in DLCO studies instead of oxygen is because carbon monoxide is:

What is the normal minute ventilation of an average person at rest?

Which of the following may decrease the FVC in a patient with an obstructive lung disorder?

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

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