Quiz: COPD PBL


COPD PBLOnline version copd- bronchitis and emphysema by Mimi 1 A 65-year-old man with a 40-pack-year smoking history presents with progressive dyspnoea and a chronic productive cough for the past three years. Which of the following best defines chronic bronchitis? a Presence of Chronic cough and sputum for at least 6 consecutive months in 1 year b Productive cough for at least 3 consecutive months in 2 consecutive years c Airway inflammation with mucus gland hyperplasia and fibrosis d Chronic cough with radiological evidence of mucus impaction e Chronic cough with radiological evidence of mucus impaction 2 Which of the following is the most important cause of chronic bronchitis? a α1-antitrypsin deficiency b Occupational silica exposure c Air pollution d Cigarette smoking e Recurrent viral infections 3 Which of the following histological findings is most characteristic of chronic bronchitis? a Destruction of alveolar septa without fibrosis b Hyperplasia and hypertrophy of mucus glands c Presence of eosinophilic infiltrates d Honeycomb fibrosis e Ferruginous asbestos bodies 4 A 58-year-old smoker presents with increasing dyspnoea. CT scan shows large air spaces in the upper lobes with destruction of alveolar walls. Which type of emphysema is most likely present? a Panacinar b Centriacinar c Paraseptal d Irregular e Mixed 5 A 40-year-old non-smoker presents with signs of emphysema. Blood tests reveal low α1-antitrypsin levels. Which pattern of emphysema is most likely? a Centriacinar emphysema, upper lobe predominant b Panacinar emphysema, lower lobe predominant c Paraseptal emphysema near pleural margins d Irregular emphysema associated with scarring e Mixed centriacinar and panacinar 6 What is the key pathogenic mechanism underlying emphysema in smokers? a Inhibition of alveolar macrophages b Protease–antiprotease imbalance due to oxidative stress c Increased mucus production in bronchioles d Fibrosis of alveolar septa e Overproduction of surfactant 7 Which of the following features best distinguishes emphysema from asthma? a Reversible airflow limitation b Hyperinflated lungs c Chronic cough d Mucus hypersecretion e Destruction of alveolar walls 8 Which clinical description most accurately represents a “pink puffer”? a Obese, cyanotic patient with chronic cough and sputum production b Cachectic patient with dyspnoea, pursed-lip breathing, and near-normal oxygenation c Cyanotic, oedematous patient with CO₂ retention d Patient with finger clubbing and copious purulent sputum e Young adult with paroxysmal nocturnal dyspnoea 9 Which of the following spirometry findings is typical of COPD (emphysema and chronic bronchitis)? a Increased FEV1/FVC ratio b Decreased FEV1/FVC ratio with normal TLC c Increased FVC with reduced TLC d Normal FEV1/FVC and decreased TLC e Increased FEV1/FVC with reduced RV 10 A 60-year-old smoker presents with wheezing and chronic cough. Which statement best explains the coexistence of chronic bronchitis and emphysema in COPD? a They share the same underlying genetic mutation b Both are caused by infection with Mycobacterium tuberculosis c Both involve chronic inflammation due to smoking-related airway damage d Both are reversible if smoking is stopped early e Both primarily affect small airways without alveolar involvement Feedback 1 Chronic bronchitis is defined clinically as a productive cough lasting for ≥3 consecutive months in ≥2 consecutive years. 2 Cigarette smoking is the primary cause; it triggers chronic inflammation and mucus hypersecretion. 3 Chronic bronchitis shows mucus gland enlargement and goblet cell hyperplasia/metaplasia. 4 Centriacinar (centrilobular) emphysema primarily affects upper lobes and is associated with smoking. 5 α1-antitrypsin deficiency causes panacinar emphysema, more prominent in lower lobes. 6 Smoking increases neutrophil elastase and reactive oxygen species, disrupting the protease–antiprotease balance. 7 Emphysema is defined by irreversible destruction of alveolar walls, unlike asthma’s reversible obstruction. 8 “Pink puffer” describes emphysema-dominant COPD: dyspnoea, prolonged expiration, but adequate oxygenation. 9 Obstructive diseases show decreased FEV1/FVC ratio and normal or increased TLC due to air trapping. 10 Smoking induces chronic inflammation, protease activity, and oxidative injury, causing both bronchial and alveolar damage.

1

A 65-year-old man with a 40-pack-year smoking history presents with progressive dyspnoea and a chronic productive cough for the past three years. Which of the following best defines chronic bronchitis?

a

Presence of Chronic cough and sputum for at least 6 consecutive months in 1 year

b

Productive cough for at least 3 consecutive months in 2 consecutive years

c

Airway inflammation with mucus gland hyperplasia and fibrosis

d

Chronic cough with radiological evidence of mucus impaction

e

Chronic cough with radiological evidence of mucus impaction

2

Which of the following is the most important cause of chronic bronchitis?

a

α1-antitrypsin deficiency

b

Occupational silica exposure

c

Air pollution

d

Cigarette smoking

e

Recurrent viral infections

3

Which of the following histological findings is most characteristic of chronic bronchitis?

a

Destruction of alveolar septa without fibrosis

b

Hyperplasia and hypertrophy of mucus glands

c

Presence of eosinophilic infiltrates

d

Honeycomb fibrosis

e

Ferruginous asbestos bodies

4

A 58-year-old smoker presents with increasing dyspnoea. CT scan shows large air spaces in the upper lobes with destruction of alveolar walls. Which type of emphysema is most likely present?

a

Panacinar

b

Centriacinar

c

Paraseptal

d

Irregular

e

Mixed

5

A 40-year-old non-smoker presents with signs of emphysema. Blood tests reveal low α1-antitrypsin levels. Which pattern of emphysema is most likely?

a

Centriacinar emphysema, upper lobe predominant

b

Panacinar emphysema, lower lobe predominant

c

Paraseptal emphysema near pleural margins

d

Irregular emphysema associated with scarring

e

Mixed centriacinar and panacinar

6

What is the key pathogenic mechanism underlying emphysema in smokers?

a

Inhibition of alveolar macrophages

b

Protease–antiprotease imbalance due to oxidative stress

c

Increased mucus production in bronchioles

d

Fibrosis of alveolar septa

e

Overproduction of surfactant

7

Which of the following features best distinguishes emphysema from asthma?

a

Reversible airflow limitation

b

Hyperinflated lungs

c

Chronic cough

d

Mucus hypersecretion

e

Destruction of alveolar walls

8

Which clinical description most accurately represents a “pink puffer”?

a

Obese, cyanotic patient with chronic cough and sputum production

b

Cachectic patient with dyspnoea, pursed-lip breathing, and near-normal oxygenation

c

Cyanotic, oedematous patient with CO₂ retention

d

Patient with finger clubbing and copious purulent sputum

e

Young adult with paroxysmal nocturnal dyspnoea

9

Which of the following spirometry findings is typical of COPD (emphysema and chronic bronchitis)?

a

Increased FEV1/FVC ratio

b

Decreased FEV1/FVC ratio with normal TLC

c

Increased FVC with reduced TLC

d

Normal FEV1/FVC and decreased TLC

e

Increased FEV1/FVC with reduced RV

10

A 60-year-old smoker presents with wheezing and chronic cough. Which statement best explains the coexistence of chronic bronchitis and emphysema in COPD?

a

They share the same underlying genetic mutation

b

Both are caused by infection with Mycobacterium tuberculosis

c

Both involve chronic inflammation due to smoking-related airway damage

d

Both are reversible if smoking is stopped early

e

Both primarily affect small airways without alveolar involvement

Feedback

1

Chronic bronchitis is defined clinically as a productive cough lasting for ≥3 consecutive months in ≥2 consecutive years.

2

Cigarette smoking is the primary cause; it triggers chronic inflammation and mucus hypersecretion.

3

Chronic bronchitis shows mucus gland enlargement and goblet cell hyperplasia/metaplasia.

4

Centriacinar (centrilobular) emphysema primarily affects upper lobes and is associated with smoking.

5

α1-antitrypsin deficiency causes panacinar emphysema, more prominent in lower lobes.

6

Smoking increases neutrophil elastase and reactive oxygen species, disrupting the protease–antiprotease balance.

7

Emphysema is defined by irreversible destruction of alveolar walls, unlike asthma’s reversible obstruction.

8

“Pink puffer” describes emphysema-dominant COPD: dyspnoea, prolonged expiration, but adequate oxygenation.

9

Obstructive diseases show decreased FEV1/FVC ratio and normal or increased TLC due to air trapping.

10

Smoking induces chronic inflammation, protease activity, and oxidative injury, causing both bronchial and alveolar damage.

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COPD PBL

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COPD PBLOnline version

by Mimi

A 65-year-old man with a 40-pack-year smoking history presents with progressive dyspnoea and a chronic productive cough for the past three years. Which of the following best defines chronic bronchitis?

Which of the following is the most important cause of chronic bronchitis?

Which of the following histological findings is most characteristic of chronic bronchitis?

A 58-year-old smoker presents with increasing dyspnoea. CT scan shows large air spaces in the upper lobes with destruction of alveolar walls. Which type of emphysema is most likely present?

A 40-year-old non-smoker presents with signs of emphysema. Blood tests reveal low α1-antitrypsin levels. Which pattern of emphysema is most likely?

What is the key pathogenic mechanism underlying emphysema in smokers?

Which of the following features best distinguishes emphysema from asthma?

Which clinical description most accurately represents a “pink puffer”?

Which of the following spirometry findings is typical of COPD (emphysema and chronic bronchitis)?

A 60-year-old smoker presents with wheezing and chronic cough. Which statement best explains the coexistence of chronic bronchitis and emphysema in COPD?

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