Deck 4: Pulmonary Function Testing

Question 1

The respiratory therapist is called to the neurologic care unit to assess the muscle strength of a patient diagnosed with myasthenia gravis. Which of the following tests should the therapist recommend to assess the patient's respiratory muscle strength?

A) Maximum inspiratory pressure (MIP)
B) Maximum inspiratory flowrate (MIFR)
C) Maximum expiratory flowrate (MEFR)
D) Vital capacity (VC)

Answer 1

Maximum inspiratory pressure (MIP)

Question 2

The FEF_25%-75% is used to evaluate:

A) flow in large airways.
B) lung volumes.
C) maximum breathing effort.
D) flow in medium-size to small airways.

Answer 2

flow in medium-size to small airways.

Question 3

Overall characteristics of pulmonary function testing results on a patient with obstructive lung disease include that the FEV₁:

A) is reduced and FEV₁% is normal.
B) and FEV₁% are both increased.
C) and FEV₁% are both reduced.
D) is increased and FEV₁% is decreased.

Answer 3

and FEV₁% are both reduced.

Question 4

A special indirect measurement procedure must be done to find which of the following?

A) Inspiratory reserve volume
B) Residual volume
C) Expiratory reserve volume
D) Inspiratory capacity

Question 5

The pulmonary diffusion capacity of the carbon monoxide test is used to:

A) assess the patient's blood carbon monoxide level.
B) remove carbon monoxide from the patient's blood.
C) measure the residual volume.
D) assess the alveolar-capillary membrane.

Question 6

Which of the following are true of the peak expiratory flowrate test?
1) It is effort dependent.
2) It is taken from the FVC test results.
3) It is taken from the MVV test results.
4) It assesses large upper airways.

A)1, 3
B)1, 2, 4
C)2, 3, 4
D)1, 2, 3

Question 7

In response to a restrictive lung disorder, which of the following is typically found?
1) Decreased lung compliance
2) Increased ventilatory rate
3) Decreased tidal volume
4) Decreased lung rigidity

A)1
B)2, 3
C)2, 3, 4
D)1, 2, 3

Question 8

The respiratory therapist is performing a pulmonary function study on a patient who has periodic symptoms of asthma. The pulmonary function results are within normal limits. What further testing can the therapist recommend to aid in either confirming or negating the possible diagnosis?

A) Inhaled methacholine challenge testing
B) Body plethysmography
C) Inhaled digitalis
D) Warm, humid air challenge

Question 9

A patient has restrictive lung disease. In response to this, which of the following are typically found?
1) Decreased lung compliance
2) Increased ventilatory rate
3) Increased tidal volume
4) Decreased ventilatory rate

A)3, 4
B)2, 3
C)1, 2
D)1, 3, 4

Question 10

Pulmonary function studies are done for which of the following measurements?
1) The patient's carbon monoxide level
2) Lung volumes and capacities
3) Pulmonary diffusion capacity
4) Forced expiratory flowrates

A)1
B)2, 3
C)2, 3, 4
D)1, 2, 3

Question 11

Total lung capacity is composed of which of the following?
1) IRV
2) IC
3) ERV
4) RV

A)3, 4
B)2, 3
C)1, 2
D)2, 3, 4

Question 12

In a healthy individual, which of the following is considered a normal expiratory time necessary to perform a forced vital capacity?

A) Less than 4 seconds
B) 4 to 6 seconds
C) 6 to 8 seconds
D) 8 to 10 seconds

Question 13

A respiratory therapist has just performed a pulmonary function study and notes that the results show obstructive lung disease with a decreased DLCO value. Which of the following is the best interpretation of these results?

A) The patient has pulmonary fibrosis.
B) The patient has asthma.
C) The patient has cystic fibrosis.
D) The patient has emphysema.