Pulmonology Practice Questions

Q: Which ECG pattern is commonly associated with pulmonary embolism?

S1Q3T3. S1Q3T3 - The S1Q3T3 pattern is a classic ECG finding in pulmonary embolism (PE), indicating acute right heart strain [1]. - It consists of a prominent S wave in lead I, a Q wave in lead III, and an inverted T wave in lead III [1]. T wave inversion in V1-V4 - While T wave inversions can occur in PE, particularly in the precordial leads, the absence of an S1Q3T3 pattern makes it a less specific indicator compared to S1Q3T3 [1]. - This finding is also common in other conditions like myocardial ischemia or right ventricular hypertrophy. S1Q1T3 - This is not a recognized or common ECG pattern associated with pulmonary embolism. - The specific combination of waves in this pattern does not reflect the typical acute right heart strain seen in PE. S3Q3T1 - This is not a recognized or common ECG pattern associated with pulmonary embolism. - The described complex of waves does not correspond to the physiological changes, such as acute right ventricular overload, that occur during a PE.

Q: Type IV respiratory failure occurs due to

Hypoperfusion of respiratory muscles. Type IV respiratory failure occurs due to ***Hypoperfusion of respiratory muscles*** - Type IV respiratory failure is specifically defined as **shock-induced respiratory failure** due to inadequate oxygen delivery to the respiratory muscles. - This leads to **respiratory muscle fatigue** and an inability to maintain adequate ventilation, causing both hypoxemia and hypercapnia. *Alveolar flooding* - This condition is characteristic of **Type I respiratory failure** [1], which is primarily hypoxemic and involves impaired oxygenation [2]. - Causes include **pulmonary edema** (cardiogenic or non-cardiogenic ARDS) where fluid fills the alveoli [3]. *Inability to eliminate CO2* - This describes **Type II respiratory failure**, also known as **hypercapnic respiratory failure**, due to inadequate alveolar ventilation [2]. - It results from conditions like **COPD exacerbation**, neuromuscular disorders, or severe airway obstruction, where the primary issue is CO2 retention [1]. *Lung atelectasis* - Leads to **Type I (hypoxemic) respiratory failure** by causing an intrapulmonary shunt, where unventilated parts of the lung are still perfused [2]. - It is the collapse of lung tissue, typically due to **airway obstruction** or compression, but does not directly cause Type IV failure.

Q: Which of the following lung conditions are smokers more prone to?

Chronic obstructive pulmonary disease (COPD). ***Chronic obstructive pulmonary disease (COPD)*** - **Smoking is the leading cause** of COPD, leading to progressive airflow limitation [1]. - Toxins in cigarette smoke cause **inflammation**, **mucus hypersecretion**, and destruction of lung tissue (emphysema) [1]. *Pneumonia* - While smokers have an **increased risk of pneumonia** due to impaired mucociliary clearance and immune function, it is not as uniquely or predominantly linked to smoking as COPD [2]. - Pneumonia is an **acute infection**, whereas COPD is a chronic, progressive condition. *Influenza* - Smokers are more susceptible to severe influenza and its complications, but influenza is a **viral infection** that affects the general population [2]. - The direct and consistent causal link between smoking and influenza is not as strong as it is with COPD. *Mycobacterium tuberculosis* - Smoking can increase the risk of developing **active tuberculosis** and worsen its prognosis, likely due to dampened immune responses [2]. - However, tuberculosis is a **bacterial infection** primarily driven by exposure to an infected person, not exclusively by smoking.

Q: Pink puffers are typically associated with which condition?

Emphysema. ***Emphysema*** - Patients with **emphysema** are often referred to as "pink puffers" because they maintain relatively normal arterial oxygen tension (pink) by **pursing their lips** and using accessory muscles to forcefully exhale (puffing) [1]. - This effort to maintain adequate oxygenation and ventilation, despite severe airflow obstruction, differentiates them from "blue bloaters" [1]. - In emphysema, the loss of alveolar walls leaves small airways unsupported, which contributes to air trapping and increased expiratory effort [2]. *Chronic bronchitis* - Patients with **chronic bronchitis** are classically described as "blue bloaters" due to **hypoxemia** (causing cyanosis or "blueness") and often present with **edema** from right heart failure (bloating) [1]. - They typically have a prominent cough with **sputum production** and less respiratory distress at rest compared to emphysema patients [1]. *Pneumonia* - **Pneumonia** is an acute infection of the lung parenchyma characterized by **fever**, cough, and **dyspnea**, and does not fit the long-term clinical phenotype of "pink puffer." - It typically causes an **influx of inflammatory cells** and fluid into the alveoli, leading to impaired gas exchange. *Bronchiectasis* - **Bronchiectasis** is characterized by **permanent dilation of the bronchi** and is often associated with chronic productive cough and recurrent infections. - While it can cause chronic respiratory symptoms, it does not typically present with the "pink puffer" phenotype associated with the specific compensatory mechanisms seen in emphysema.

Q: In allergic bronchopulmonary aspergillosis, where are the lesions primarily located?

Bronchi and bronchioles. In allergic bronchopulmonary aspergillosis, where are the lesions primarily located? ***Bronchi and bronchioles*** - Allergic bronchopulmonary aspergillosis primarily affects the **airways**, particularly the **bronchi and bronchioles**, due to the hypersensitivity reaction to the Aspergillus species. - It leads to **mucous plugging** and inflammatory changes in these structures, resulting in symptoms like **cough** and **wheeze**. *All of the above* - This option is incorrect as lesions are not typically found in all structures; ABPA specifically targets the **airways**. - The disease's hallmark features are localized to the **bronchi and bronchioles**, making this option misleading. *Pleura* - While pleural involvement can occur in other pulmonary diseases, it is not characteristic of **allergic bronchopulmonary aspergillosis**. - ABPA does not typically cause **pleural effusions** or lesions in the pleura, focusing instead on airway pathology. *Alveoli* - In ABPA, the primary lesions do not occur in the **alveoli**, but rather in the **airway passages**. - While lung inflammation can affect the alveoli in other contexts, it is not a specific feature of this condition.

Q: Which of the following is least likely to cause a cavity in the lungs?

Sarcoidosis. ***Sarcoidosis*** - Sarcoidosis typically leads to **granuloma formation** in the lungs rather than cavitary lesions [1]. - It usually presents with **bilateral hilar lymphadenopathy** and interstitial lung disease, not lung cavities [1]. *Wegeners* - Wegeners (now called Granulomatosis with Polyangiitis) can cause lung cavities due to **vascular inflammation** [1]. - It typically presents with **pulmonary nodules** that may cavitate and is associated with **renal involvement** [1]. *Hydatid* - Hydatid disease is caused by **Echinococcus** species and can result in cyst formation in the lungs that may become infected and develop cavities. - The cavitary lesions are often due to secondary infections of the cysts. *Staphylococcus* - Staphylococcus can lead to lung abscesses which may cavitate, particularly in cases of **pneumonia** or **aspiration**. - It is commonly associated with **necrotizing pneumonia** and empyema, resulting in cavitary lesions.

Q: Which of the following conditions is primarily associated with alveolar hypoventilation?

Kyphoscoliosis. ***Kyphoscoliosis*** - **Severe kyphoscoliosis** can restrict lung expansion and thoracic cage movement, leading to **reduced tidal volume** and respiratory muscle fatigue, resulting in **alveolar hypoventilation**. [1] - The abnormal curvature of the spine mechanically impedes efficient ventilation, primarily impacting the ability to take deep breaths and clear CO2. *COPD* - While patients with **severe COPD** can develop hypoventilation, it is primarily characterized by **airway obstruction** and **ventilation-perfusion mismatch** rather than being a primary cause of hypoventilation like restrictive disorders. [1] - Initial stages often involve hyperinflation and increased work of breathing, but not necessarily alveolar hypoventilation as the primary feature. *Lobar pneumonia* - **Lobar pneumonia** causes **consolidation** of lung tissue, leading to V/Q mismatch and hypoxemia. [2] - It typically results in *hyperventilation* due to hypoxaemia and inflammation, rather than alveolar hypoventilation. [2] *Bulbar poliomyelitis* - **Bulbar poliomyelitis** affects the motor neurons of the brainstem, leading to weakness of the muscles involved in swallowing and breathing. - While it can cause respiratory failure, its primary association is with direct paralysis of respiratory muscles rather than a structural respiratory compromise like kyphoscoliosis. *Central sleep apnea* - **Central sleep apnea** involves a temporary cessation of breathing efforts due to a lack of neural output from the brainstem. - It is a disorder of respiratory control during sleep and not primarily associated with daytime alveolar hypoventilation due to a structural chest wall defect.

Q: Which of the following is the most characteristic laboratory finding in sarcoidosis?

Elevated level of angiotensin converting enzyme (ACE). ***Elevated level of angiotensin converting enzyme (ACE)*** - **Elevated ACE levels** are a classic laboratory finding in active sarcoidosis, reflecting the increased activity of **macrophages** and **epithelioid cells** within the granulomas. - While not diagnostic on its own, it is a highly **characteristic marker** that correlates with disease activity in many patients. *Pleural effusion is common in sarcoidosis* - **Pleural effusions** are **uncommon** in sarcoidosis, occurring in less than 5% of cases. - When present, they are often small and lymphocytic but not a typical or common feature. *Facial nerve palsy is the most common neurological manifestation* - While **facial nerve palsy** can occur in sarcoidosis (neurosarcoidosis), it is **not the most common neurological manifestation**. - **Cranial neuropathies** (especially facial nerve palsy) are notable features, but other neurological presentations like **meningitis**, **seizures**, or **peripheral neuropathy** are also seen. *Bilateral parotid enlargement is the most common presentation* - **Parotid gland enlargement** can occur in sarcoidosis, particularly as part of **Heerfordt's syndrome** (uveoparotid fever), but it is **not the most common presentation** of the disease. - The most common initial presentation of sarcoidosis is usually **pulmonary involvement**, often detected incidentally on chest X-ray or presenting with respiratory symptoms.

Q: An Adult with asthma presents with asthma symptoms every day and wakes up in the night approximately 2 to 3 days in a week. He can be classified as having :

Moderate Persistent Asthma. ***Moderate Persistent Asthma*** - This classification is characterized by **daily asthma symptoms** [1] and **nighttime awakenings occurring 3-4 times per week**. The patient's symptoms fit this description. - The patient's presentation of daily symptoms and 2-3 nighttime awakenings per week indicates a level of severity that surpasses mild persistent asthma but does not meet the criteria for severe persistent asthma [1]. *Intermittent Asthma* - This classification involves symptoms less than **twice a week** and nighttime awakenings less than **twice a month**. - The patient's symptoms are daily, which exceeds the criteria for intermittent asthma. *Mild Persistent Asthma* - This type features symptoms more than **twice a week** but less than **daily**, and nighttime awakenings occurring 3-4 times per month [1]. - The patient experiences daily symptoms, which is more frequent than what is seen in mild persistent asthma. *Severe Persistent Asthma* - This classification involves symptoms throughout the **day** and nighttime awakenings **every night** or multiple times a week (7 nights/week). Also, the patient has a very limited activity level. - While the patient has daily symptoms, the frequency of nighttime awakenings is not severe enough to be classified as severe persistent asthma.

Question 1

Which ECG pattern is commonly associated with pulmonary embolism?

Accepted Answer

S1Q3T3

Answer

T wave inversion in V1-V4

Answer

S1Q1T3

Answer

S3Q3T1

Question 2

Which of the following is a common cause of respiratory failure in the immediate post-operative period?

Accepted Answer

Kyphoscoliosis causing Type 2 respiratory failure due to restrictive lung disease and hypoventilation

Answer

Post-operative atelectasis causing Type 1 respiratory failure due to ventilation-perfusion mismatch

Answer

Pulmonary fibrosis causing Type 1 respiratory failure due to impaired gas diffusion

Answer

Flail chest causing Type 1 respiratory failure due to chest wall instability and ventilation-perfusion mismatch

Question 3

Type IV respiratory failure occurs due to

Accepted Answer

Hypoperfusion of respiratory muscles

Answer

Alveolar flooding

Answer

Inability to eliminate CO2

Answer

Lung atelectasis

Question 4

Which of the following lung conditions are smokers more prone to?

Accepted Answer

Chronic obstructive pulmonary disease (COPD)

Answer

Pneumonia

Answer

Mycobacterium tuberculosis

Answer

Influenza

Question 5

Pink puffers are typically associated with which condition?

Accepted Answer

Emphysema

Answer

Chronic bronchitis

Answer

Pneumonia

Answer

Bronchiectasis

Question 6

In allergic bronchopulmonary aspergillosis, where are the lesions primarily located?

Accepted Answer

Bronchi and bronchioles

Answer

None of the options

Answer

Pleura

Answer

Alveoli

Question 7

Which of the following is least likely to cause a cavity in the lungs?

Accepted Answer

Sarcoidosis

Answer

Granulomatosis with Polyangiitis (GPA)

Answer

Tuberculosis

Answer

Staphylococcus aureus pneumonia

Question 8

Which of the following conditions is primarily associated with alveolar hypoventilation?

Accepted Answer

Kyphoscoliosis

Answer

COPD

Answer

Lobar pneumonia

Answer

Bulbar poliomyelitis

Answer

Bulbar poliomyelitis

Answer

Central sleep apnea

Question 9

Which of the following is the most characteristic laboratory finding in sarcoidosis?

Accepted Answer

Elevated level of angiotensin converting enzyme (ACE)

Answer

Pleural effusion is common in sarcoidosis

Answer

Facial nerve palsy is the most common neurological manifestation

Answer

Bilateral parotid enlargement is the most common presentation

Question 10

An Adult with asthma presents with asthma symptoms every day and wakes up in the night approximately 2 to 3 days in a week. He can be classified as having :

Accepted Answer

Moderate Persistent Asthma

Answer

Intermittent Asthma

Answer

Mild Persistent Asthma

Answer

Severe Persistent Asthma

Pulmonology — MCQs

Pulmonology — MCQs

On this page

Practice by Chapter

Want unlimited practice?