QUESTION: 21

The following Levy-Jennings charts of control values are obtained:

Which of the following is the correct sequence of actions for a pulmonary function technologist to take?

1. Replace the oxygen electrode.

2. Check the temperature of the measuring chamber.

3. Run protein remover through the blood gas analyzer.

4. Replace theCO2electrode.

3, then 1
1, then 4
2, then 3
4, then 2

Answer(s): A

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QUESTION: 22

A helium dilution test has just been performed on a patient. The following results are obtained:

FRC 5.0 L

VC 4.0 L

ERV 1.5 L

TLC was calculated to be 6.0 L by plethysmography. From this information, a pulmonary function technologist should conclude that the patient

Had inadequate intrapulmonary mixing of inspired gas, resulting in an erroneous FRC.
Did not perform the slow vital capacity properly, resulting in too low an FRC by helium dilution.
Was turned into the helium dilution circuit at a lung volume considerably above FR
Did not remain in the helium dilution breathing circuit long enough for equilibration.

Answer(s): A

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QUESTION: 23

A government agency requires that a pulmonary function technologist establish procedures to minimize the loss of laboratory data. Which of the following should be included in these procedures?

1. Continuous mirroring of hard drives

2. Storage of duplicate test data offsite

3. No Internet connections to the computer storing the database

4. Contracting with a third-party security company

2,3, and 4 only
1,3, and 4 only
1,2, and 4 only
1,2, and 3 only

Answer(s): A

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QUESTION: 24

A pulmonary function technologist is performing an exercise (stress) test on a patient with severe COPD. As the test progresses, the patient shows signs of increasing dyspnea. Measurements of inspiratory capacity decreased from 2.0 L to 1.5L.
Which of the following most likely occurred?

dynamic hyperinflation
disconnected gas sampling line
drift in the flow transducer
acute decrease in FRC

Answer(s): D

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