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NBRC
NBRC Certification
RPFT
Registry Examination for Advanced Pulmonary Function Technologists Questions and Answers

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Viewing questions 21-30 out of questions

Questions # 21:

To assure linearity of an oxygen analyzer, calibrate with

Options:

Three test gases within the operating range of the instrument

Air

100% 02

Two test gases within the operating range of the instrument

Answer

Questions # 22:

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 the CO2electrode.

Options:

3, then 1

1, then 4

2, then 3

4, then 2

Answer

Questions # 23:

During a cardiopulmonary stress test using breath-by-breath gas analysis, a pulmonary function technologist notices that the VO2suddenly decreases. Which of the following may explain this change?

1. The patient has achieved anaerobic threshold.

2. The measurement of the expired gas volumes is inaccurate.

3. O2analyzer "phase delay" has increased.

4. There is a leak in the tubing or mouthpiece.

Options:

1, 3, and 4 only

1, 2, and 3 only

1, 2, and 4 only

2, 3, and 4 only

Answer

Questions # 24:

A 6-year-old child has a history of repeated episodes of wheezing and shortness of breath. A pulmonary function technologist has difficulty obtaining repeatable spirometry results. Which of the following tests should be performed next?

Options:

MVV

DLco

SGaw

SpO2

Answer

Questions # 25:

In a patient with neuromuscular disease, which of the following is the best way to detect airway obstruction?

Options:

SGaw

MIP

PEF

MVV

Answer

Questions # 26:

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

Options:

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 FRC.

Did not remain in the helium dilution breathing circuit long enough for equilibration.

Answer

Questions # 27:

During a forced vital capacity (FVC) maneuver, a patient produces an exhalation with a slow start and delayed peak expiratory flow. Which of the following is the most probable cause of this pattern?

Options:

Glottic closure at the start of exhalation

Incorrect nose clip placement

Leak in the mouthpiece

Submaximal effort by the patient

Answer

Questions # 28:

A smoking cessation program using a nicotine patch is started for all smokers in a factory. Results revealed that smokers who reported they had quit had exhaled carbon monoxide levels less than 6 ppm. A pulmonary function technologist should conclude that

Options:

The program was effective in accomplishing smoking cessation.

The smokers had refrained from smoking for the previous 6 hours.

The smokers were not being truthful about smoking cessation.

A different method of smoking cessation should be offered to improve outcomes.

Answer

Questions # 29:

A pulmonary function technologist reviews the following home monitoring spirometry results:

According to National Asthma Education and Prevention Program (NAEPP) guidelines, what feedback should the technologist give to the patient regarding test performance?

Options:

Ask the patient to blow out longer.

Encourage the patient to continue testing and monitoring the FEW

Ask the patient to recalibrate the spirometer.

Come into the office for further instructions on proper testing technique.

Answer

Questions # 30:

A 54-year-old male who smokes presents to the pulmonary laboratory for chronic cough and dyspnea on exertion. PFT and blood gas results show the following:

Question # 30