Deck 5: Pulmonary Function Testing

Question 1

Anatomical dead space is approximately _____________.

A) 1 ml/kg.
B) 165 ml.
C) 10 ml/kg.
D) 1 ml/lb.

Answer 1

1 ml/lb.

Question 2

Which of the following pulmonary function values CANNOT be measured directly by a bedside pulmonary function test?
I.Tidal volume (Vt)
II.Functional residual capacity (FRC)
III.Residual volume (RV)
IV.Minute volume

A) I and IV
B) II and III
C) II, III, and IV
D) I only

Answer 2

II and III

Question 3

Which of the following conditions could affect the reliability of spirometry measurements?

A) Emphysema
B) Pneumothorax
C) Asthma
D) COPD

Answer 3

Pneumothorax

Question 4

Which of the following are limitations to spirometry testing?
I.Spirometry is an effort-dependent test that requires careful instruction and the cooperation of the test subject.
II.Inability to perform acceptable maneuvers may be due to poor subject motivation or failure to understand instructions.
III.Physical impairment and young age (e.g.,<5 years of age)may also limit the subject's ability to perform spirometric maneuvers.

A) I and III
B) II and III
C) I, II, and III
D) I and II

Question 5

The patient's tidal volume can be calculated by ________________

A) MVV divided by the respiratory rate.
B) Vt multiplied by the respiratory rate.
C) Vt divided by the respiratory rate.
D) Vt divided by the MVV.

Question 6

If a patient's minute volume is measured at 3 LPM,which of the following would you expect to be present?
I.Hypoxemia
II.Hypocapnia
III.More gas exchange at the alveolar level

A) I only
B) I, II, III
C) II and III
D) II only

Question 7

Vt + IRV = ?

A) Inspiratory capacity (IC)
B) Vital capacity (VC)
C) Total lung capacity (TLC)
D) Functional residual capacity (FRC)

Question 8

To measure the________________,instruct the patient to inhale as deeply as possible and then exhale as forcefully as possible.

A) Inspiratory reserve volume (IRV)
B) Peak expiratory flow (PEF)
C) Vital capacity (VC)
D) Expiratory reserve volume (ERV)

Question 9

Which of the following would be used to measure a patient's tidal volume and minute volume?

A) Peak flowmeter
B) Manometer
C) Respirometer
D) Mini-Wright device

Question 10

Which of the following is NOT an indication for spirometry?

A) Detect the presence or absence of lung dysfunction suggested by history or physical signs and symptoms
B) Quantify the severity of known lung disease
C) Assess the potential effects or response to environmental or occupational exposure
D) Hemoptysis of unknown origin

Question 11

Respirometers are designed to operate between flows of _______________.

A) 5% to 10%
B) 3 to 300 LPM
C) 60 to 100 LPM
D) 50 to 1000 LPM

Question 12

What is defined as the amount of air moved into or out of a resting patient's lungs with each normal breath?

A) Inspiratory reserve volume (IRV)
B) Expiratory reserve volume (ERV)
C) Tidal volume (Vt)
D) Minute volume

Question 13

What should happen if a subject is unable to perform a single acceptable spirometry maneuver after eight attempts?

A) The best attempt should be submitted as the patient's spirometry value
B) The vital capacity should be reported but the FEVt should not be reported
C) A bronchodilator should be given and the test tried again
D) Testing may be discontinued or attempted again depending on the patient's condition

Question 14

What is defined as the maximum volume of air that can be exhaled after a maximal inspiration?

A) Inspiratory reserve volume (IRV)
B) Expiratory reserve volume (ERV)
C) Inspiratory capacity (IC)
D) Vital capacity (VC)

Question 15

What device moves at different speeds to allow the measurement of slow and forced maneuvers?

A) Kymograph
B) Peak flowmeter
C) Respirometer
D) Spirometer

Question 16

Which of the following measurements can not be monitored at the patient's bedside?
I.Minute volume
II.Peak flow
III.Tidal volume
IV.Negative inspiratory force

A) I and II
B) III and IV
C) I, II, III, IV
D) I, III, and IV

Question 17

A rate in excess of 35-breaths per minute may be _________________.

A) normal.
B) an indication of pending respiratory failure.
C) sufficient muscle strength.
D) less gas exchange at the alveolar level.

Question 18

What is a device called that measures ventilatory volumes and air flow?

A) A respirometer
B) A peak flowmeter
C) A spirometer
D) A flowmeter

Question 19

When comparing the 2 largest FVCs,what should their value be to ensure that there is reproducibility in the spirometry results?

A) Within 200 ml of each other
B) 20% before and after bronchodilator
C) At least 3.0 L
D) Within 21.432 ml of each other

Question 20

Which device would be used to measure a patient's peak flow before and after a bronchodilator?

A) Boehringer Inspiratory Force Manometer
B) Haloscale respirometer
C) Wright respirometer
D) Mini-Wright Peak Flowmeter

Question 21

A flow-volume loop plots _____ along the vertical axis and _______ along the horizontal axis

A) Vt, RR
B) PEF, FVC
C) flow, volume
D) FVC, RV

Question 22

A patient comes to the PFT lab to get an annual pulmonary function test.What factors would cause changes in the results from year to year?

Question 23

What gas in the single breath diffusion test because it only trace amounts are found in the atmosphere and it has a greater affinity for hemoglobin than oxygen?

A) Carbon Dioxide
B) Nitrogen
C) Carbon Monoxide
D) Nitric Oxide

Question 24

Patient cooperation must be elicited for the best pulmonary function test results.How would the technician elicit the best cooperation and test results from the patient?

Question 25

Which gas law or calculation is used in the body plethysmograph to measure lung volumes?

A) Nitrogen Washout Law
B) Boyles' Law
C) C1V1 = C2V2
D) Gas Dilution Technique

Question 26

What volume or flow of a PFT does the following two statements describe? The measurement can provide an indication of obstruction.However,the test validity depends on the effort and cooperation of the patient.

A) Peak expiratory flow (PEF)
B) Timed forced expiratory volume (FEVt)
C) Forced vital capacity (FVC)
D) Maximum inspiratory pressure (MIP)

Question 27

Why are three pulmonary function test trials performed for simple spirometry and flow volume loops and how should the results be reported?

Question 28

All pulmonary function testing is performed at _________ and then must be converted to reflect conditions of __________.

A) rest, exercise
B) ATPS, BTPS
C) BTPS, ATPS
D) maximum effort, rest