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Total 111 questions
A biologic control subject has a FRCpleth of 4.0 ±0.3 L at panting frequencies between 60 and 70/min. During a QC run, the subject pants at55/min and a
FRCpleth of 3.90 L is recorded.
Which of the following is the most appropriate action to take?
- A. Recalibrate the mouth pressure transducer and repeat the test.
- B. Repeat the test, coaching the subject to pant more slowly.
- C. Continue using the system because it is within control limits.
- D. Take the plethysmograph out of service pending corrective maintenance.
Answer : C
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?
- A. Ask the patient to blow out longer.
- B. Encourage the patient to continue testing and monitoring the FEW
- C. Ask the patient to recalibrate the spirometer.
- D. Come into the office for further instructions on proper testing technique.
Answer : B
A 45-year-old female with sarcoidosis has pulmonary function tests annually. The following data have been recorded:
A pulmonary function technologist should conclude that
- A. The patient's restrictive component has worsened.
- B. The patient has developed mild obstructive airway disease.
- C. The patient has a normal rate of loss for FEV1.
- D. Incorrect predicted values have been used.
Answer : D
Which of the following thresholds for a clinically significant change in lung function from the beginning to the end of a methacholine challenge test is significant?
- A. An increase of more than 20% in airway resistance
- B. A decline of more than 30% in FEF25-75%
- C. A decline of more than 20% in FEV1
- D. A decline of more than 20% in inspiratory capacity
Answer : C
Which of the following is a common reason for an unstable zero reading from an infrared analyzer?
- A. Debris in the sampling system
- B. Inaccurate calibration gases
- C. Exhausted DRIERITE
- D. Excess room humidity
Answer : A
Which of the following tracings represents an airways resistance maneuver performed with a slow breathing frequency?
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Answer : D
The following biologic control data ranges were established:
The following additional data were obtained when assessing the equipment:
Which of the following should a pulmonary function technologist do?
- A. Change the CO2 and H2O absorbers.
- B. Continue testing patients.
- C. Change the DLco CO analyzer.
- D. Check the flow sensor.
Answer : D
In which of the following patients would an end-tidal CO2 most likely produce values that are inconsistent with PaCO2?
- A. 50 year old with mild scleroderma
- B. 42 year old with moderate COPD
- C. 20 year old who smokes cigarettes
- D. 12 year old with kyphoscoliosis
Answer : B
A 54-year-old male with a normal ECG at rest develops dyspnea during an exercise (stress) test, and the following ECG pattern is noted at 25 watts:
25 mm/sec A pulmonary function technologist should
- A. Continue the test until the subject reaches target heart rate.
- B. Stop the test immediately; there is evidence of heart block.
- C. Continue the test and obtain an arterial blood sample.
- D. Stop the test immediately; there is evidence of ischemia.
Answer : B
A subject has the following values reported:
What is the SGAW?
- A. 0.20
- B. 0.80
- C. 1.25
- D. 0.40
Answer : C
An isothermal lung analog has the following specifications:
5-L glass bottle
2000 g of steel wool
Density of steel wool 5 g/cm3 -
Volume of connectors and bulb 100 mi-Repeated FRC measurements in the plethysmograph result in a volume of 5.5 L.
Which of the following should a pulmonary function technologist do?
- A. Remove 500 g of steel wool from the lung analog
- B. Take the plethysmograph out of service
- C. Recalculate the BTPS correction
- D. Begin a biologic control program
Answer : D
A patient with severe airflow limitation pants too rapidly (> 3 breaths/second) against a closed shutter in a body plethysmograph. Which of the following will occur?
- A. VTG underestimation
- B. VTG overestimation
- C. RAW underestimation
- D. RAW overestimation
Answer : D
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 CO2 electrode.
- A. 3, then 1
- B. 1, then 4
- C. 2, then 3
- D. 4, then 2
Answer : A
The following test results are available for a 35-year-old subject who is applying for disability:
These findings are consistent with
- A. A paralyzed hemidiaphragm
- B. Occupational asthma
- C. Pulmonary fibrosis
- D. Poor effort
Answer : A
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