NR507 EDAPT WEEK 3 OBSTRUCTIVE AND
RESTRICTIVE LUNG DISEASES 2026/2027 STUDY
GUIDE | COPD ASTHMA INTERSTITIAL LUNG
DISEASE | VERIFIED QUESTIONS AND ANSWERS
WITH DETAILED RATIONALES | LATEST UPDATED
VERSION
• This study guide contains 200 verified exam-style questions covering COPD,
Asthma, and Interstitial Lung Diseases — designed to test deep pathophysiology
understanding, clinical presentation, diagnostics, and management as covered in
NR507 EDAPT Week 3.
• Use this material by reading each question carefully, selecting your answer before
checking the highlighted correct option and EXPERT RATIONALE — this active
recall method maximizes retention for exams.
QUESTION 1
Which of the following best defines Chronic Obstructive Pulmonary Disease
(COPD)?
A. A reversible airflow limitation caused by airway hyperresponsiveness
B. A restrictive lung pattern caused by fibrotic changes in the parenchyma
C. A progressive, largely irreversible airflow limitation associated with an abnormal
inflammatory response to noxious particles or gases
D. An acute inflammatory condition of the lower airways causing bronchospasm
E. A condition characterized by alveolar collapse due to surfactant deficiency
CORRECT ANSWER: C. A progressive, largely irreversible airflow limitation
associated with an abnormal inflammatory response to noxious particles or
gases
EXPERT RATIONALE: COPD is defined by persistent, progressive airflow
limitation that is not fully reversible. It results from chronic exposure to noxious
stimuli — most commonly cigarette smoke — triggering an abnormal inflammatory
,response in the airways and lung parenchyma. Unlike asthma, the obstruction in
COPD is largely irreversible.
QUESTION 2
What is the most common risk factor for the development of COPD?
A. Occupational exposure to asbestos
B. Alpha-1 antitrypsin deficiency
C. Recurrent childhood pneumonia
D. Cigarette smoking
E. Chronic asthma
CORRECT ANSWER: D. Cigarette smoking
EXPERT RATIONALE: Cigarette smoking accounts for approximately 85–90% of
COPD cases. It triggers a sustained inflammatory response in the airways and
alveoli, leading to structural damage, mucus hypersecretion, and progressive
airflow limitation. While other factors like alpha-1 antitrypsin deficiency contribute,
smoking remains the dominant risk factor.
QUESTION 3
Which pulmonary function test finding is characteristic of COPD?
A. Increased FVC with normal FEV1
B. FEV1/FVC ratio greater than 0.80
C. Post-bronchodilator FEV1/FVC ratio less than 0.70
D. Decreased total lung capacity (TLC)
E. Normal residual volume with reduced FRC
CORRECT ANSWER: C. Post-bronchodilator FEV1/FVC ratio less than 0.70
, EXPERT RATIONALE: The hallmark spirometric finding of COPD is a post-
bronchodilator FEV1/FVC ratio of less than 0.70, confirming persistent, largely
irreversible airflow obstruction. This distinguishes COPD from asthma, where
obstruction is typically reversible after bronchodilator therapy.
QUESTION 4
Emphysema is best characterized by which of the following pathological
changes?
A. Mucus hypersecretion in large airways with preserved alveolar walls
B. Airway smooth muscle hypertrophy and subepithelial fibrosis
C. Destruction of alveolar walls leading to enlarged air spaces distal to the terminal
bronchioles
D. Thickening of the alveolar-capillary membrane from collagen deposition
E. Collapse of small airways due to loss of surfactant
CORRECT ANSWER: C. Destruction of alveolar walls leading to enlarged air
spaces distal to the terminal bronchioles
EXPERT RATIONALE: Emphysema involves permanent, irreversible enlargement
of the air spaces distal to the terminal bronchioles due to destruction of alveolar
walls without fibrosis. This results in loss of elastic recoil, air trapping, and impaired
gas exchange. The destruction is mediated primarily by an imbalance between
proteases and antiproteases.
QUESTION 5
Which type of emphysema is most strongly associated with cigarette
smoking?
A. Panacinar emphysema
B. Paraseptal emphysema
, C. Centriacinar (centrilobular) emphysema
D. Distal acinar emphysema
E. Irregular emphysema
CORRECT ANSWER: C. Centriacinar (centrilobular) emphysema
EXPERT RATIONALE: Centriacinar emphysema predominantly affects the
central portions of the acinus — specifically the respiratory bronchioles — and is
most commonly associated with cigarette smoking. It predominantly involves the
upper lobes. Panacinar emphysema, on the other hand, is associated with alpha-1
antitrypsin deficiency.
QUESTION 6
Alpha-1 antitrypsin deficiency leads to emphysema primarily through which
mechanism?
A. Increased mucus production blocking the airways
B. Unopposed protease activity causing alveolar wall destruction
C. Immune-mediated destruction of bronchial epithelium
D. Hypersecretion of neutrophil elastase inhibitors
E. Increased surfactant degradation in alveoli
CORRECT ANSWER: B. Unopposed protease activity causing alveolar wall
destruction
EXPERT RATIONALE: Alpha-1 antitrypsin (AAT) is the primary inhibitor of
neutrophil elastase. In AAT deficiency, unopposed elastase activity destroys alveolar
walls, leading to panacinar emphysema predominantly affecting the lower lobes.
This protease-antiprotease imbalance is a key mechanism in emphysema
pathogenesis.
QUESTION 7
RESTRICTIVE LUNG DISEASES 2026/2027 STUDY
GUIDE | COPD ASTHMA INTERSTITIAL LUNG
DISEASE | VERIFIED QUESTIONS AND ANSWERS
WITH DETAILED RATIONALES | LATEST UPDATED
VERSION
• This study guide contains 200 verified exam-style questions covering COPD,
Asthma, and Interstitial Lung Diseases — designed to test deep pathophysiology
understanding, clinical presentation, diagnostics, and management as covered in
NR507 EDAPT Week 3.
• Use this material by reading each question carefully, selecting your answer before
checking the highlighted correct option and EXPERT RATIONALE — this active
recall method maximizes retention for exams.
QUESTION 1
Which of the following best defines Chronic Obstructive Pulmonary Disease
(COPD)?
A. A reversible airflow limitation caused by airway hyperresponsiveness
B. A restrictive lung pattern caused by fibrotic changes in the parenchyma
C. A progressive, largely irreversible airflow limitation associated with an abnormal
inflammatory response to noxious particles or gases
D. An acute inflammatory condition of the lower airways causing bronchospasm
E. A condition characterized by alveolar collapse due to surfactant deficiency
CORRECT ANSWER: C. A progressive, largely irreversible airflow limitation
associated with an abnormal inflammatory response to noxious particles or
gases
EXPERT RATIONALE: COPD is defined by persistent, progressive airflow
limitation that is not fully reversible. It results from chronic exposure to noxious
stimuli — most commonly cigarette smoke — triggering an abnormal inflammatory
,response in the airways and lung parenchyma. Unlike asthma, the obstruction in
COPD is largely irreversible.
QUESTION 2
What is the most common risk factor for the development of COPD?
A. Occupational exposure to asbestos
B. Alpha-1 antitrypsin deficiency
C. Recurrent childhood pneumonia
D. Cigarette smoking
E. Chronic asthma
CORRECT ANSWER: D. Cigarette smoking
EXPERT RATIONALE: Cigarette smoking accounts for approximately 85–90% of
COPD cases. It triggers a sustained inflammatory response in the airways and
alveoli, leading to structural damage, mucus hypersecretion, and progressive
airflow limitation. While other factors like alpha-1 antitrypsin deficiency contribute,
smoking remains the dominant risk factor.
QUESTION 3
Which pulmonary function test finding is characteristic of COPD?
A. Increased FVC with normal FEV1
B. FEV1/FVC ratio greater than 0.80
C. Post-bronchodilator FEV1/FVC ratio less than 0.70
D. Decreased total lung capacity (TLC)
E. Normal residual volume with reduced FRC
CORRECT ANSWER: C. Post-bronchodilator FEV1/FVC ratio less than 0.70
, EXPERT RATIONALE: The hallmark spirometric finding of COPD is a post-
bronchodilator FEV1/FVC ratio of less than 0.70, confirming persistent, largely
irreversible airflow obstruction. This distinguishes COPD from asthma, where
obstruction is typically reversible after bronchodilator therapy.
QUESTION 4
Emphysema is best characterized by which of the following pathological
changes?
A. Mucus hypersecretion in large airways with preserved alveolar walls
B. Airway smooth muscle hypertrophy and subepithelial fibrosis
C. Destruction of alveolar walls leading to enlarged air spaces distal to the terminal
bronchioles
D. Thickening of the alveolar-capillary membrane from collagen deposition
E. Collapse of small airways due to loss of surfactant
CORRECT ANSWER: C. Destruction of alveolar walls leading to enlarged air
spaces distal to the terminal bronchioles
EXPERT RATIONALE: Emphysema involves permanent, irreversible enlargement
of the air spaces distal to the terminal bronchioles due to destruction of alveolar
walls without fibrosis. This results in loss of elastic recoil, air trapping, and impaired
gas exchange. The destruction is mediated primarily by an imbalance between
proteases and antiproteases.
QUESTION 5
Which type of emphysema is most strongly associated with cigarette
smoking?
A. Panacinar emphysema
B. Paraseptal emphysema
, C. Centriacinar (centrilobular) emphysema
D. Distal acinar emphysema
E. Irregular emphysema
CORRECT ANSWER: C. Centriacinar (centrilobular) emphysema
EXPERT RATIONALE: Centriacinar emphysema predominantly affects the
central portions of the acinus — specifically the respiratory bronchioles — and is
most commonly associated with cigarette smoking. It predominantly involves the
upper lobes. Panacinar emphysema, on the other hand, is associated with alpha-1
antitrypsin deficiency.
QUESTION 6
Alpha-1 antitrypsin deficiency leads to emphysema primarily through which
mechanism?
A. Increased mucus production blocking the airways
B. Unopposed protease activity causing alveolar wall destruction
C. Immune-mediated destruction of bronchial epithelium
D. Hypersecretion of neutrophil elastase inhibitors
E. Increased surfactant degradation in alveoli
CORRECT ANSWER: B. Unopposed protease activity causing alveolar wall
destruction
EXPERT RATIONALE: Alpha-1 antitrypsin (AAT) is the primary inhibitor of
neutrophil elastase. In AAT deficiency, unopposed elastase activity destroys alveolar
walls, leading to panacinar emphysema predominantly affecting the lower lobes.
This protease-antiprotease imbalance is a key mechanism in emphysema
pathogenesis.
QUESTION 7
