RRT RRT Pulmonary Function Testing 3

Question 1

A maximum inspiratory pressure (MIP or NIF) of -20 cmH2O in a neuromuscular disease patient suggests what?

Accepted Answer

Severely reduced inspiratory muscle strength with high intubation risk

Answer

Adequate inspiratory muscle strength for extubation

Answer

Normal respiratory function

Answer

Obstructive lung disease

Question 2

What does the 6-minute walk test (6MWT) primarily assess in pulmonary patients?

Accepted Answer

Functional exercise capacity and submaximal aerobic performance

Answer

Lung volumes

Answer

Diffusing capacity

Answer

Bronchodilator response

Question 3

Increased airway resistance (Raw) on body plethysmography is most consistent with which condition?

Accepted Answer

COPD or asthma

Answer

Pulmonary fibrosis

Answer

Pleural effusion

Answer

Pneumothorax

Question 4

Which spirometric measure has the highest day-to-day variability and is least recommended for diagnosing obstruction?

Accepted Answer

Peak expiratory flow (PEF)

Answer

FEV1

Answer

FVC

Answer

FEV1/FVC ratio

Question 5

In cardiopulmonary exercise testing (CPET), a low anaerobic threshold (AT) is most associated with:

Accepted Answer

Cardiovascular deconditioning or heart failure

Answer

Pulmonary vascular disease

Answer

Obstructive lung disease

Answer

Restrictive lung disease

Question 6

Which finding on spirometry is most characteristic of asthma?

Accepted Answer

Reversible airflow obstruction with significant post-bronchodilator improvement

Answer

Fixed obstructive defect unresponsive to bronchodilators

Answer

Reduced TLC with normal FEV1/FVC

Answer

Isolated reduction in DLCO