CRE Pulmonary Function Testing & Interpretation 2

Question 1

On a flow-volume loop, a concave (scooped-out) appearance of the expiratory limb is characteristic of which condition?

Accepted Answer

Obstructive lung disease

Answer

Restrictive lung disease

Answer

Fixed upper airway obstruction

Answer

Normal lung function

Question 2

A methacholine challenge (bronchoprovocation) test is primarily used to evaluate for which condition?

Accepted Answer

Bronchial hyperresponsiveness consistent with asthma

Answer

COPD severity staging

Answer

Pulmonary fibrosis progression

Answer

Pulmonary vascular disease

Question 3

Maximum Voluntary Ventilation (MVV) measures which respiratory parameter?

Accepted Answer

The maximum volume breathed in and out over 12-15 seconds extrapolated to one minute

Answer

The maximum volume exhaled in 6 seconds

Answer

The peak expiratory flow rate during tidal breathing

Answer

The static elastic recoil of the lung

Question 4

Peak expiratory flow (PEF) monitoring is most commonly used to assess which chronic respiratory condition?

Accepted Answer

Asthma

Answer

Idiopathic pulmonary fibrosis

Answer

Emphysema

Answer

Obstructive sleep apnea

Question 5

Body plethysmography is required to accurately measure which lung volume that cannot be measured by spirometry alone?

Accepted Answer

Functional Residual Capacity (FRC)

Answer

FVC

Answer

FEV1

Answer

Inspiratory Reserve Volume (IRV)

Question 6

The multiple-breath nitrogen washout test is used to measure which lung parameter?

Accepted Answer

Functional Residual Capacity (FRC)

Answer

FEV1 percent predicted

Answer

Diffusing capacity (DLCO)

Answer

Maximum voluntary ventilation

Question 7

When interpreting spirometry, percent predicted values are derived by comparing patient results to which reference standard?

Accepted Answer

Age-, height-, sex-, and ethnicity-matched reference population data

Answer

The patient's personal best effort from prior testing

Answer

A fixed hospital-specific normative database

Answer

A universal standard independent of patient demographics