Question 1

The normal FEV₃ to FVC ratio is approximately:

Accepted Answer

The answer of The normal FEV₃ to FVC ratio is...

Question 2

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

Accepted Answer

FEV₃ (Forced Expiratory Volume in 3 seconds) is primarily used to assess the function of small airways.

Question 3

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

Accepted Answer

The closing-volume (CV) test is specifically used to detect obstructions in small airways, which are often affected early in respiratory diseases.

Question 4

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

The nitrogen washout test is used to assess ventilation distribution in the lungs, which can help identify areas of poor ventilation, such as those seen in emphysema.

Question 5

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

Accepted Answer

The Maximum Voluntary Ventilation (MVV) test is often used preoperatively to assess respiratory function and predict potential postoperative pulmonary complications.

Question 6

To determine whether there is a positive response to bronchodilator therapy, improvement must be seen in which of the following values? 1) FVC 2) FEV₁ 3) FEF_{25% to 75%} 4) FEF_{75% to 85%}

Accepted Answer

Improvement in FEV1 and FVC are commonly used to assess bronchodilator response, and FEF25%-75% can also indicate changes in small airway function.

Question 7

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

Accepted Answer

Airway resistance is increased in an exacerbation of asthma due to bronchoconstriction and inflammation.

Question 8

The concentration of carbon monoxide used in a DLCO study is approximately:

Accepted Answer

The answer of The concentration of carbon monoxide used in...

Question 9

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

Accepted Answer

The MVV test is typically performed over a period of 12 to 15 seconds to assess the maximum amount of air a person can inhale and exhale within that time frame.

Question 10

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

The answer of How would the inspiratory reserve volume and...

Question 11

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

Accepted Answer

The FEF_{25% to 75%} (Forced Expiratory Flow at 25% to 75% of the pulmonary volume) is more sensitive than FEV₁ in detecting early airway obstruction, particularly in the small airways.

Question 12

The normal FEV₁ to FVC ratio is approximately:

Accepted Answer

The normal FEV1 to FVC ratio is approximately 75% to 80% in healthy adults. This ratio helps in assessing lung function and diagnosing obstructive and restrictive lung diseases.

Question 13

The MVV reflects which of the following?
1) Airway resistance
2) Condition of respiratory muscles
3) Condition of lung tissue
4) Compliance of the lungs and thorax

Accepted Answer

The Maximum Voluntary Ventilation (MVV) reflects airway resistance, the condition of respiratory muscles, and the compliance of the lungs and thorax. It measures the maximum amount of air a person can inhale and exhale within a specific time period, which involves these factors.

Question 14

Which of the following diseases are associated with a reduced DLCO?
1) Emphysema
2) Chronic bronchitis
3) Pulmonary embolus
4) Pulmonary fibrosis

Accepted Answer

Emphysema, pulmonary embolus, and pulmonary fibrosis are associated with a reduced DLCO due to damage to the alveolar-capillary membrane or reduced blood flow. Chronic bronchitis typically does not affect DLCO significantly.

Question 15

Which of the following tests are considered for exercise testing?
1) Stress ECG
2) Ventilatory capacity
3) Anaerobic threshold
4) DLCO

Accepted Answer

Stress ECG, ventilatory capacity, and anaerobic threshold are all considered in exercise testing to assess cardiovascular and respiratory function during physical activity. DLCO is a measure of lung diffusion capacity, not typically part of exercise testing.

Question 16

The forced expiratory volume in 1 s (FEV₁) usually is expressed as a percentage of the observed:

Accepted Answer

FEV1 is typically expressed as a percentage of the Forced Vital Capacity (FVC) to assess lung function and diagnose obstructive and restrictive airway diseases.

Question 17

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

Accepted Answer

The DLCO (Diffusing Capacity of the Lung for Carbon Monoxide) test measures how well gases can move from the lungs into the blood, specifically assessing the ability of the alveolar-capillary membrane to transfer carbon monoxide.

Question 18

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

Accepted Answer

Carbon monoxide is used in DLCO studies because it is diffusion limited, meaning its transfer across the alveolar-capillary membrane is limited by the diffusion process, making it ideal for assessing the diffusing capacity of the lungs.

Question 19

Which of the following conditions are determinants of gas exchange across the membrane?
1) Amount of oxygen in the blood
2) Thickness of the alveolar-capillary membrane
3) Diffusion coefficient of carbon monoxide in the lungs
4) Surface area of the membrane

Accepted Answer

The thickness of the alveolar-capillary membrane, the diffusion coefficient of gases, and the surface area of the membrane are key determinants of gas exchange efficiency across the membrane.

Question 20

What will happen to the static lung compliance of a postoperative heart patient with left lower lobe atelectasis?

Accepted Answer

Static lung compliance will be less than normal because atelectasis (collapse of lung tissue) reduces the lung's ability to expand, thus decreasing compliance.

Quiz 9: Pulmonary Function Testing

The normal FEV₃ to FVC ratio is approximately:

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

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

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?

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

To determine whether there is a positive response to bronchodilator therapy, improvement must be seen in which of the following values? 1) FVC 2) FEV₁ 3) FEF_{25% to 75%} 4) FEF_{75% to 85%}

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

The concentration of carbon monoxide used in a DLCO study is approximately:

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

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

The normal FEV₁ to FVC ratio is approximately:

The MVV reflects which of the following? 1) Airway resistance 2) Condition of respiratory muscles 3) Condition of lung tissue 4) Compliance of the lungs and thorax

Which of the following diseases are associated with a reduced DLCO? 1) Emphysema 2) Chronic bronchitis 3) Pulmonary embolus 4) Pulmonary fibrosis

Which of the following tests are considered for exercise testing? 1) Stress ECG 2) Ventilatory capacity 3) Anaerobic threshold 4) DLCO

The forced expiratory volume in 1 s (FEV₁) usually is expressed as a percentage of the observed:

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

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

Which of the following conditions are determinants of gas exchange across the membrane? 1) Amount of oxygen in the blood 2) Thickness of the alveolar-capillary membrane 3) Diffusion coefficient of carbon monoxide in the lungs 4) Surface area of the membrane

What will happen to the static lung compliance of a postoperative heart patient with left lower lobe atelectasis?

Quiz 9: Pulmonary Function Testing

The normal FEV3 to FVC ratio is approximately:

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

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

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?

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

To determine whether there is a positive response to bronchodilator therapy, improvement must be seen in which of the following values? 1) FVC 2) FEV1 3) FEF25% to 75% 4) FEF75% to 85%

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

The concentration of carbon monoxide used in a DLCO study is approximately:

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

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

The normal FEV1 to FVC ratio is approximately:

The MVV reflects which of the following? 1) Airway resistance 2) Condition of respiratory muscles 3) Condition of lung tissue 4) Compliance of the lungs and thorax

Which of the following diseases are associated with a reduced DLCO? 1) Emphysema 2) Chronic bronchitis 3) Pulmonary embolus 4) Pulmonary fibrosis

Which of the following tests are considered for exercise testing? 1) Stress ECG 2) Ventilatory capacity 3) Anaerobic threshold 4) DLCO

The forced expiratory volume in 1 s (FEV1) usually is expressed as a percentage of the observed:

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

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

Which of the following conditions are determinants of gas exchange across the membrane? 1) Amount of oxygen in the blood 2) Thickness of the alveolar-capillary membrane 3) Diffusion coefficient of carbon monoxide in the lungs 4) Surface area of the membrane

What will happen to the static lung compliance of a postoperative heart patient with left lower lobe atelectasis?

The normal FEV₃ to FVC ratio is approximately:

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

To determine whether there is a positive response to bronchodilator therapy, improvement must be seen in which of the following values? 1) FVC 2) FEV₁ 3) FEF_{25% to 75%} 4) FEF_{75% to 85%}

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

The normal FEV₁ to FVC ratio is approximately:

The forced expiratory volume in 1 s (FEV₁) usually is expressed as a percentage of the observed: