Respiratory Medicine UK Medical PG Practice Questions and MCQs
Practice UK Medical PG questions for Respiratory Medicine. These multiple choice questions (MCQs) cover important concepts and help you prepare for your exams.
Respiratory Medicine UK Medical PG Question 1: A 42-year-old woman presents with fatigue, muscle aches, and widespread pain. She has multiple tender points but normal inflammatory markers. Sleep is poor. What is the most appropriate initial treatment?
- A. NSAIDs
- B. Prednisolone
- C. Pregabalin (Correct Answer)
- D. Methotrexate
- E. Physiotherapy alone
Respiratory Medicine Explanation: ***Pregabalin***
- **Pregabalin** is a **gabapentinoid** drug that modulates voltage-gated calcium channels, decreasing the release of excitatory neurotransmitters involved in central pain sensitization characteristic of **fibromyalgia**.
- It is one of the FDA-approved medications (along with duloxetine and milnacipran) specifically recommended for managing the **widespread pain** and associated symptoms like **poor sleep** in fibromyalgia.
*NSAIDs*
- Non-steroidal anti-inflammatory drugs (NSAIDs) target inflammatory pain, which is generally absent in **fibromyalgia** as evidenced by **normal inflammatory markers**.
- NSAIDs are usually **ineffective** in treating the centralized pain and hyperalgesia seen in this condition, making them a poor choice for monotherapy.
*Prednisolone*
- **Prednisolone** is a powerful corticosteroid used for conditions driven by **inflammation** (e.g., active arthritis or vasculitis).
- The patient has normal inflammatory markers and a clinical presentation consistent with a non-inflammatory central pain syndrome, making steroids **inappropriate** and potentially harmful.
*Methotrexate*
- **Methotrexate** is a **Disease-Modifying Anti-Rheumatic Drug (DMARD)** indicated for managing autoimmune inflammatory diseases like **Rheumatoid Arthritis** or **Psoriatic Arthritis**.
- Since the patient does not show evidence of an inflammatory or autoimmune joint disease, this immunosuppressant drug treatment is **not warranted**.
*Physiotherapy alone*
- While non-pharmacological therapies like **aerobic exercise** and **Cognitive Behavioral Therapy (CBT)** are essential long-term components, they are often insufficient alone to manage severe initial symptoms, particularly **poor sleep** and disabling pain.
- Initial treatment typically requires a combination of pharmacological agents (like **Pregabalin**) combined with supportive non-pharmacological management for optimal symptom control.
Respiratory Medicine UK Medical PG Question 2: A 38-year-old woman presents with recurrent episodes of severe abdominal pain and psychiatric symptoms. Her urine turns dark during attacks. Family history reveals similar episodes. What is the inheritance pattern?
- A. Autosomal recessive
- B. Autosomal dominant (Correct Answer)
- C. X-linked recessive
- D. X-linked dominant
- E. Mitochondrial
Respiratory Medicine Explanation: ***Autosomal dominant***
- The clinical picture of recurrent severe abdominal pain, psychiatric symptoms, and dark urine during attacks is highly suggestive of **Acute Intermittent Porphyria (AIP)**.
- AIP is caused by a deficiency in **hydroxymethylbilane synthase (PBG deaminase)** and is inherited in an **autosomal dominant** fashion, which explains the positive family history.
*Autosomal recessive*
- **Autosomal recessive** disorders typically manifest if two copies of the defective gene are inherited, often presenting in siblings but not consistently across multiple generations (vertical transmission) as implied by the family history.
- Conditions like **Congenital erythropoietic porphyria** are autosomal recessive but primarily cause photosensitivity and hemolytic anemia, not neurovisceral crises.
*X-linked recessive*
- **X-linked recessive** disorders predominantly affect males and are transmitted from carrier mothers to sons, a pattern inconsistent with a female patient with similar episodes in the family.
- Common examples like **Hemophilia** or **Duchenne Muscular Dystrophy** have sex-linked inheritance patterns that do not match the presented symptoms or inheritance.
*X-linked dominant*
- **X-linked dominant** inheritance would show affected fathers passing the trait to all daughters but none of their sons, and affected mothers passing it to half of their children, which is not the typical pattern for AIP.
- **X-linked protoporphyria**, a rare porphyria, follows this pattern but presents primarily with severe photosensitivity and hepatobiliary complications, not the neurovisceral attacks seen here.
*Mitochondrial*
- **Mitochondrial inheritance** is characterized by exclusive **maternal transmission**, meaning all children of an affected mother are affected, but no children of an affected father. This pattern differs from the general family history for AIP.
- Mitochondrial disorders primarily affect high-energy-demand organs, and while they can have neurological components, most porphyrias are nuclear-encoded genetic disorders, making mitochondrial inheritance highly unlikely.
Respiratory Medicine UK Medical PG Question 3: A 28-year-old woman presents with sudden onset severe headache during exercise. She vomits and has neck stiffness. CT head shows subarachnoid hemorrhage. What is the most likely cause?
- A. Arteriovenous malformation
- B. Berry aneurysm (Correct Answer)
- C. Carotid dissection
- D. Hypertensive hemorrhage
- E. Trauma
Respiratory Medicine Explanation: ***Berry aneurysm*** - The sudden onset of a severe, explosive **thunderclap headache** coupled with signs of meningeal irritation (vomiting, neck stiffness) and the finding of **subarachnoid hemorrhage (SAH)** on CT head is the classic presentation of a ruptured saccular (**berry**) aneurysm. - Exertion (exercise) acts as a common trigger for aneurysm rupture due to the sudden increase in **intracranial pressure** and transmural wall stress. *Arteriovenous malformation* - AVMs more commonly present with **intraparenchymal hemorrhage** (ICH) or seizures, rather than isolated SAH, especially when triggered by exertion. - While AVMs can cause SAH, they are a less frequent cause of widespread spontaneous SAH compared to ruptured **berry aneurysms**. *Carotid dissection* - Carotid artery dissection typically manifests as severe neck/facial pain, headache, and signs of **cerebral ischemia** (stroke symptoms) due to vessel stenosis or occlusion. - Dissections rarely cause primary, widespread SAH; they are more often associated with **subintimal hemorrhage** leading to stroke or pseudoaneurysm formation. *Hypertensive hemorrhage* - Hemorrhage due to chronic or severe hypertension (hypertensive hemorrhage) almost exclusively causes deep **intraparenchymal hemorrhage** (ICH), usually in the basal ganglia, thalamus, or brainstem. - The primary finding of SAH, rather than ICH and the patient's young age, makes uncontrolled hypertension highly unlikely as the underlying cause. *Trauma* - Although trauma is the single most frequent overall cause of SAH, the clinical history describes a **spontaneous event** triggered by exertion (exercise) without any external injury. - Traumatic SAH is clinically differentiated by the history of a specific injury and usually involves bleeding adjacent to the site of impact.
Respiratory Medicine UK Medical PG Question 4: A 56-year-old man presents with progressive dyspnea and chest tightness. He works in coal mining. Chest X-ray shows bilateral upper lobe nodules. What is the most likely diagnosis?
- A. Lung cancer
- B. Silicosis
- C. Coal worker's pneumoconiosis (Correct Answer)
- D. Tuberculosis
- E. Sarcoidosis
Respiratory Medicine Explanation: ***Coal worker's pneumoconiosis***- This diagnosis is strongly supported by the patient's occupational exposure to **coal dust** and the progressive respiratory symptoms like **dyspnea** and **chest tightness**.- The characteristic Chest X-ray finding of bilateral, often small, **pulmonary nodules** predominantly located in the **upper lung zones** is classic for this condition.*Lung cancer*- Although coal miners have an increased risk of lung cancer, the presentation of diffuse **bilateral small nodules** is more typical of a pneumoconiosis than primary malignancy.- Lung cancer usually manifests as a single, dominant mass, or less commonly as reticulonodular interstitial disease, not typically as diffuse, symmetrical small nodules.*Silicosis*- Silicosis is caused by the inhalation of **crystalline silica** dust, prevalent in occupations like sandblasting or quarrying, which differs from pure coal mining exposure.- While silicosis also causes upper lobe nodules, it often presents radiologically with **"eggshell" calcification** of the hilar lymph nodes, a finding not specified in this case.*Tuberculosis*- Although **post-primary TB** targets the upper lobes, generalized diffuse nodularity suggests pneumoconiosis rather than a primary mycobacterial infection.- TB typically presents with systemic symptoms like **fever**, **night sweats**, and **weight loss**, which are not mentioned in this patient's presentation.*Sarcoidosis*- Sarcoidosis is a systemic disease of unknown etiology characterized by **non-caseating granulomas** and classically presents with **bilateral hilar lymphadenopathy (BHL)** on chest imaging.- The strong history of **coal mining** is the key factor favoring an occupational lung disease over sarcoidosis, as BHL is also absent.
Respiratory Medicine UK Medical PG Question 5: A 56-year-old man presents with progressive dyspnea and dry cough. HRCT shows bilateral lower lobe fibrosis with honeycombing. He has clubbing and restrictive spirometry. What medication may slow disease progression?
- A. Prednisolone
- B. Azathioprine
- C. Pirfenidone (Correct Answer)
- D. Cyclophosphamide
- E. N-acetylcysteine
Respiratory Medicine Explanation: ***Pirfenidone***- The clinical presentation with progressive dyspnea, dry cough, clubbing, restrictive spirometry, and HRCT showing bilateral lower lobe fibrosis with **honeycombing** is highly characteristic of **Idiopathic Pulmonary Fibrosis (IPF)**.- **Pirfenidone** is an **anti-fibrotic** agent, along with nintedanib, approved for the treatment of mild to moderate IPF to slow disease progression by reducing the decline in **Forced Vital Capacity (FVC)**.*Prednisolone*- Systemic corticosteroids like **Prednisolone** are not recommended as monotherapy for **Idiopathic Pulmonary Fibrosis (IPF)** due to lack of proven long-term efficacy and potential harm.- They are primarily indicated for inflammatory interstitial lung diseases, such as those associated with **connective tissue diseases**, or for **acute exacerbations** of IPF.*Azathioprine*- **Azathioprine** is an immunosuppressant that was shown to be ineffective and potentially harmful in a triple-drug regimen for IPF in the **PANTHER-IPF trial**.- Immunosuppression is generally avoided in **Idiopathic Pulmonary Fibrosis** unless there is a strong suspicion of an alternative, inflammatory interstitial lung disease.*Cyclophosphamide*- **Cyclophosphamide** is a potent cytotoxic immunosuppressant typically reserved for severe, rapidly progressive forms of **connective tissue disease-associated ILD** (e.g., scleroderma-associated ILD or vasculitis).- It is not indicated for the primary management of **Idiopathic Pulmonary Fibrosis**, which is characterized by relentless fibrosis rather than a primary inflammatory process responsive to this therapy.*N-acetylcysteine*- Although previously studied for its antioxidant properties, the **PANTHER-IPF trial** demonstrated that **N-acetylcysteine** offered no benefit in slowing the progression of IPF and is no longer recommended.- Its primary clinical uses are as a mucolytic agent and as an antidote for **acetaminophen overdose**.
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