Pulmonology Practice Questions

Q: Sarcoidosis is least likely to be associated with:

Pericardial effusion. ### Pericardial effusion - While cardiac involvement in **sarcoidosis** can occur, leading to **cardiomyopathy** or **arrhythmias**, **pericardial effusions** are relatively rare [1]. - Less than 5% of patients with sarcoidosis develop pericardial effusions, making it the **least likely** among the given options [1]. ### Uveitis - **Uveitis** (inflammation of the uvea of the eye) is a common ocular manifestation of **sarcoidosis**, affecting 25-50% of patients [1]. - It can manifest as acute or chronic anterior uveitis, or posterior uveitis, and can lead to **vision impairment**. ### Erythema nodosum - **Erythema nodosum** is a common dermatological manifestation of **sarcoidosis**, particularly in acute forms like **Lofgren's syndrome** [1]. - It presents as **painful, tender red nodules** typically on the shins [1]. ### Lymphadenopathy - **Lymphadenopathy**, particularly **bilatéral mediastinal and hilar lymphadenopathy**, is a hallmark of **sarcoidosis** and is present in over 90% of cases [1]. - It is often one of the first findings on **chest X-ray** in pulmonary sarcoidosis [1].

Q: A 57-year-old man presents to the clinic with shortness of breath on exertion, which started several months after a cold and has been worsening. He reports no cough or sputum production, a 40-pack-per-year history of smoking, and a past history of well-controlled hypertension on amlodipine. On physical examination, he has bilateral wheezes on expiration and increased resonance to percussion of the chest. Pulmonary function tests confirm the diagnosis of chronic obstructive lung disease (COPD). Which of the following best describes the condition of COPD?

It is airflow limitation that is not fully reversible.. ***It is airflow limitation that is not fully reversible.*** - **COPD** is fundamentally defined by **airflow limitation** that is not fully reversible with bronchodilators, differentiating it from conditions like asthma [1]. - This **irreversible airflow obstruction** is typically progressive and associated with an abnormal inflammatory response of the lungs to noxious particles or gases [1]. *It is a condition that can include chronic bronchitis and emphysema.* - While **chronic bronchitis** and **emphysema** are major components and phenotypes of COPD, this statement describes its constituent parts rather than its overarching definition [2]. - COPD is a broader term encompassing these conditions when they lead to characteristic **non-reversible airflow limitation**. *It is primarily due to chronic inflammation of the airways.* - **Chronic inflammation** is a key pathological feature of COPD, but it is not the defining characteristic or the most accurate description of the condition itself. - This inflammation leads to the structural changes and **airflow limitation** that define COPD [1]. *It is characterized by reversible airway obstruction.* - **Reversible airway obstruction** is the hallmark of diseases like **asthma**, where airway narrowing can be significantly improved with medication [1]. - In contrast, COPD is defined by **irreversible** or only partially reversible airflow limitation.

Q: Pneumothorax could be a complication of what?

Staphylococcal pneumonia. ***Staphylococcal pneumonia*** - *Staphylococcus aureus* is known for causing **necrotizing pneumonia**, forming abscesses and **cavitary lesions** that can rupture into the pleural space. - This rupture leads to a **bronchopleural fistula** and subsequent development of a **pneumothorax** [2]. *Pneumococcal pneumonia* - This is the most common cause of **community-acquired pneumonia** but typically causes **lobar consolidation** [1]. - It is rarely associated with necrotizing changes or significant pleural complications like pneumothorax, though **empyema** can occur [2]. *Klebsiella pneumonia* - Often causes severe, **necrotizing pneumonia**, particularly in debilitated or alcoholic individuals, but is more commonly associated with **abscess formation** within the lung parenchyma [3]. - While lung destruction can occur, pneumothorax is a less frequent direct complication compared to cavitary lesions seen in staphylococcal infections. *Viral pneumonia* - Typically causes **interstitial inflammation** and diffuse involvement of the lung parenchyma [4]. - It does not usually lead to significant tissue necrosis or cavitation that would predispose to a pneumothorax.

Q: What occurs in the case of pneumothorax?

Air in the pleural space. ***Air in the pleural space*** - **Pneumothorax** is defined by the presence of **air in the pleural space**, which is the potential space between the parietal and visceral pleura [1]. - This accumulation of air causes a partial or complete **collapse of the lung** on the affected side due to the loss of negative intrapleural pressure [1]. *Cavity in the lung* - A **cavity in the lung** typically refers to a localized area of necrosis and excavation within the lung parenchyma, often seen in conditions like tuberculosis, fungal infections, or lung abscess. - While it can lead to pneumothorax if it ruptures into the pleural space, a lung cavity itself is not synonymous with pneumothorax. *Pus in the pleural space* - **Pus in the pleural space** is known as **empyema**, a type of pleural effusion characterized by purulent fluid accumulation due to infection [2]. - This is a distinct condition from pneumothorax, which involves air, not pus, in the pleural space. *Blood in the pleural space* - **Blood in the pleural space** is termed **hemothorax**, usually resulting from trauma, surgery, or underlying medical conditions that cause bleeding into the pleural cavity. - Hemothorax involves fluid (blood) accumulation, whereas pneumothorax specifically involves air.

Q: What is a likely diagnosis for a patient with persistent fever after treatment for pneumonia?

Empyema (pleural effusion with infection). ***Empyema (pleural effusion with infection)*** - **Empyema** is a collection of pus in the pleural space, often a complication of pneumonia, and can cause **persistent fever** despite appropriate antibiotic treatment for the initial pneumonia [1]. - The continued presence of infection in the pleural space, which is not directly targeted by standard pneumonia treatment, can lead to prolonged inflammatory symptoms [1]. *Fungal pneumonia* - While fungal pneumonia can cause persistent fever, it typically does not develop *after* treatment for bacterial pneumonia unless the patient is immunocompromised or has specific environmental exposures . - It would usually be considered if initial bacterial treatment failed or if there were specific risk factors for fungal infection. *Bronchogenic carcinoma* - This is a long-term, chronic condition that can cause fever, but it is unlikely to present as a *persistent fever immediately after treatment* for an acute pneumonia episode. - Fever associated with malignancy often has a different pattern and is usually accompanied by other systemic symptoms like weight loss. *Lung abscess* - A **lung abscess** is a pus-filled cavity within the lung parenchyma, which can cause persistent fever. - However, fever from a lung abscess often responds partially to antibiotics, and the diagnosis is usually made earlier during the initial pneumonia course or when treatment fails to resolve the infiltrates.

Q: Pulmonary embolism is most commonly produced by which of the following?

Thrombosis of lower limb veins. ***Thrombosis of lower limb veins*** - The vast majority of pulmonary emboli originate from **deep vein thromboses (DVTs)** in the lower extremities, particularly the proximal veins (popliteal, femoral, iliac) [1]. - These clots can detach and travel through the right side of the heart to lodge in the **pulmonary arterial system** [1]. - Many patients with suspected PE will have identifiable proximal thrombus in the leg veins [2]. *Trauma* - While severe trauma can increase the risk of DVT due to immobility and venous stasis, **trauma itself is not the direct cause** of the pulmonary embolism. - Trauma is a risk factor for DVT formation, which then leads to PE, rather than directly producing the embolism. *Atherosclerosis* - Atherosclerosis is a disease of arteries involving plaque formation and can lead to conditions like **myocardial infarction** or **stroke**, but it is not a direct source of pulmonary emboli. - While severe atherosclerosis can be a risk factor for DVT in some cases due to systemic inflammation or reduced mobility, it is not the primary mechanism. *No significant cause* - While up to 50% of deep vein thromboses can be asymptomatic, thereby making their "cause" seem insignificant to the patient, PE always has an underlying cause, most commonly **venous thrombosis** [1]. - PE is a serious medical condition with identifiable risk factors and origins, even if the patient is unaware of the initial thrombotic event.

Q: A 65-year-old retired accountant with a 60-pack-year smoking history presents for his annual physical examination, having been previously seen 3 years ago for acute bronchitis. He reports coughing for several months with productive green sputum, but denies dyspnea or daily activity limitation. On examination, his blood pressure is 126/62 mm Hg, pulse is 80/min, and respirations are 24/min, with diffuse bilateral expiratory rhonchi and a prolonged expiratory phase. Cardiac examination reveals a second heart sound that increases in intensity with inspiration, and the liver edge is 14 cm into the midclavicular line, being mildly tender to palpation. Bilateral lower extremity edema is present to the knees. Chest x-ray film shows hyperinflation of both lung fields, and pulmonary function tests reveal a diminished FEV1/FVC ratio. Routine laboratories are sent. Which of the following would most likely be expected?

A hemoglobin of 17 g/dL. ***A hemoglobin of 17 g/dL*** - Chronic **hypoxia** from chronic obstructive pulmonary disease (COPD) leads to increased **erythropoietin** production, stimulating the bone marrow to produce more red blood cells, resulting in a **compensatory polycythemia** (high hemoglobin/hematocrit) [1]. - The patient's presentation with a long history of smoking [2], productive cough, rhonchi, prolonged expiratory phase, hyperinflation, and diminished FEV1/FVC ratio is highly indicative of **COPD**, which often leads to chronic hypoxemia [1]. *A hemoglobin of 9 g/dL* - A hemoglobin of 9 g/dL indicates **anemia**, which is not a typical compensatory mechanism for chronic hypoxia in COPD; rather, the body attempts to increase oxygen-carrying capacity. - While patients with chronic diseases can develop anemia, in the context of chronic hypoxia from COPD, **polycythemia** is a more expected finding as a compensatory response [1]. *A platelet count of 84,000* - A platelet count of 84,000 indicates **thrombocytopenia**, a low platelet count, which is not directly associated with the pathophysiology of COPD or its compensatory mechanisms. - Thrombocytopenia can be caused by various underlying conditions, but there is no information in the vignette to suggest such a disorder. *A platelet count of 102,000* - Similar to the previous option, a platelet count of 102,000 also indicates **thrombocytopenia**, which is not a characteristic finding or expected complication related to COPD. - COPD primarily affects the respiratory system, and while it can have systemic effects, a low platelet count is not a typical presentation in this scenario.

Q: What is the most common cause of Chronic Obstructive Pulmonary Disease (COPD)?

Smoking. ***Smoking*** - **Smoking** is by far the leading cause of COPD, accounting for approximately 80-90% of all cases [1]. - inhaling **toxic chemicals** and irritants in tobacco smoke causes chronic inflammation and damage to the airways and alveoli [1]. *Exposure to air pollutants* - Chronic exposure to indoor and outdoor **air pollutants**, such as biomass fuel smoke or industrial emissions, can contribute to COPD. - However, their impact is generally **less significant** than that of active smoking in the general population [1]. *Genetic predisposition* - A rare genetic condition, **alpha-1 antitrypsin deficiency**, can lead to early-onset COPD, especially in non-smokers. - While other **genetic factors** may influence susceptibility, they do not represent the most common cause [1]. *Occupational exposure* - Prolonged exposure to certain **occupational dusts** and chemicals, such as cadmium, silica, and cotton dust, can cause COPD. - This is a significant risk factor for specific populations but is **not the most common cause** overall.

Q: Which of the following is typically not associated with allergic pulmonary aspergillosis?

Occurrence in patients with old cavitary lesions. Occurrence in patients with old cavitary lesions - Allergic bronchopulmonary aspergillosis (ABPA) primarily affects patients with **asthma** or **cystic fibrosis**, causing an allergic response to *Aspergillus* spores within the airways. - The presence of old cavitary lesions is a hallmark of **aspergilloma**, a distinct form of aspergillus infection, rather than ABPA [1]. *High IgE level* - ABPA is characterized by an intense **T-helper 2 immune response** to *Aspergillus* antigens, leading to significantly elevated total and *Aspergillus*-specific **IgE levels**. - **Serological tests** showing high IgE are a key diagnostic criterion for ABPA. *Pleural effusion* - While less common, **pleural effusions** can occur in severe cases of ABPA, typically due to associated **pneumonitis** or bronchial obstruction. - It indicates significant inflammatory involvement beyond the airways. *Recurrent pneumonia* - Patients with ABPA often experience recurrent episodes of **pulmonary infiltrates**, which can clinically present as recurrent pneumonia. - These episodes are due to **bronchial obstruction** by mucus plugs and inflammatory reactions to the fungus, leading to localized inflammation and consolidation [1].

Q: Which of the following is used for improving the long-term prognosis in COPD with resting hypoxemia?

Oxygen. ***Oxygen*** - **Long-term oxygen therapy** (LTOT) in patients with COPD and resting hypoxemia significantly improves **survival**, quality of life, and exercise capacity [2], [3]. - It reduces the risk of developing **pulmonary hypertension** and **cor pulmonale** [3]. *Beta-2 agonist* - **Short-acting** and **long-acting beta-2 agonists** are bronchodilators used to relieve symptoms like breathlessness by relaxing airways [1]. - While they improve symptoms and exercise tolerance, they do not impact the **long-term prognosis** or survival in COPD [1]. *Inhaled steroids* - **Inhaled corticosteroids** (ICS) are primarily used to reduce the frequency of **exacerbations** in patients with severe COPD. - They do not directly improve **long-term survival** or alter the progression of lung function decline. *Systemic steroids* - **Systemic corticosteroids** are used for short-term treatment of acute COPD exacerbations to reduce inflammation. - **Chronic use** is associated with significant side effects and does not improve the long-term prognosis or survival in stable COPD.

Question 1

Sarcoidosis is least likely to be associated with:

Accepted Answer

Pericardial effusion

Answer

Uveitis

Answer

Erythema nodosum

Answer

Lymphadenopathy

Question 2

A 57-year-old man presents to the clinic with shortness of breath on exertion, which started several months after a cold and has been worsening. He reports no cough or sputum production, a 40-pack-per-year history of smoking, and a past history of well-controlled hypertension on amlodipine. On physical examination, he has bilateral wheezes on expiration and increased resonance to percussion of the chest. Pulmonary function tests confirm the diagnosis of chronic obstructive lung disease (COPD). Which of the following best describes the condition of COPD?

Accepted Answer

It is airflow limitation that is not fully reversible.

Answer

It is a condition that can include chronic bronchitis and emphysema.

Answer

It is primarily due to chronic inflammation of the airways.

Answer

It is characterized by reversible airway obstruction.

Question 3

Pneumothorax could be a complication of what?

Accepted Answer

Staphylococcal pneumonia

Answer

Pneumococcal pneumonia

Answer

Klebsiella pneumonia

Answer

Viral pneumonia

Question 4

What occurs in the case of pneumothorax?

Accepted Answer

Air in the pleural space

Answer

Cavity in the lung

Answer

Pus in the pleural space

Answer

Blood in the pleural space

Question 5

What is a likely diagnosis for a patient with persistent fever after treatment for pneumonia?

Accepted Answer

Empyema (pleural effusion with infection)

Answer

Fungal pneumonia

Answer

Bronchogenic carcinoma

Answer

Lung abscess

Question 6

Pulmonary embolism is most commonly produced by which of the following?

Accepted Answer

Thrombosis of lower limb veins

Answer

Trauma

Answer

Atherosclerosis

Answer

No significant cause

Question 7

A 65-year-old retired accountant with a 60-pack-year smoking history presents for his annual physical examination, having been previously seen 3 years ago for acute bronchitis. He reports coughing for several months with productive green sputum, but denies dyspnea or daily activity limitation. On examination, his blood pressure is 126/62 mm Hg, pulse is 80/min, and respirations are 24/min, with diffuse bilateral expiratory rhonchi and a prolonged expiratory phase. Cardiac examination reveals a second heart sound that increases in intensity with inspiration, and the liver edge is 14 cm into the midclavicular line, being mildly tender to palpation. Bilateral lower extremity edema is present to the knees. Chest x-ray film shows hyperinflation of both lung fields, and pulmonary function tests reveal a diminished FEV1/FVC ratio. Routine laboratories are sent. Which of the following would most likely be expected?

Accepted Answer

A hemoglobin of 17 g/dL

Answer

A platelet count of 84,000

Answer

A platelet count of 102,000

Answer

A hemoglobin of 9 g/dL

Question 8

What is the most common cause of Chronic Obstructive Pulmonary Disease (COPD)?

Accepted Answer

Smoking

Answer

Exposure to air pollutants

Answer

Genetic predisposition

Answer

Occupational exposure

Question 9

Which of the following is typically not associated with allergic pulmonary aspergillosis?

Accepted Answer

Occurrence in patients with old cavitary lesions

Answer

High IgE level

Answer

Pleural effusion

Answer

Recurrent pneumonia

Question 10

Which of the following is used for improving the long-term prognosis in COPD with resting hypoxemia?

Accepted Answer

Oxygen

Answer

Beta-2 agonist

Answer

Inhaled steroids

Answer

Systemic steroids

Pulmonology — MCQs

Pulmonology — MCQs

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