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NBRC Registry Examination for Advanced Pulmonary Function Technologists Sample Questions:

1. 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) A decline of more than 30% in FEF25-75%
B) An increase of more than 20% in airway resistance
C) A decline of more than 20% in inspiratory capacity
D) A decline of more than 20% in FEV1

2. To facilitate measurement of arterial oxygen content during an exercise (stress) test, a pulmonary function technologist should recommend

A) Pulse oximetry
B) An arterial puncture at anaerobic threshold
C) End-tidal monitoring
D) Radial artery catheterization

3. The following results are obtained:

The RV/TLC ratio from these data is consistent with which of the following?

A) Obstructive defect
B) Normal lung volumes
C) Combined obstructive/restrictive defect
D) Restrictive defect

4. A 40-year-old woman with a recent onset of asthma is receiving education regarding her newly prescribed medications. Which of the following will most likely cause her to experience hoarseness?

A) Leukotriene antagonist
B) Anti-lgE immunizations
C) Short acting beta2-agonist
D) Inhaled corticosteroid

5. A biologic control subject has a FRCplethof 4.0 ±0.3 L at panting frequencies between 60 and 70/min. During a QC run, the subject pants at55/min and a FRCplethof 3.90 L is recorded.
Which of the following is the most appropriate action to take?

A) Continue using the system because it is within control limits.
B) Take the plethysmograph out of service pending corrective maintenance.
C) Recalibrate the mouth pressure transducer and repeat the test.
D) Repeat the test, coaching the subject to pant more slowly.

Solutions: