Finger clubbing is found in:

Appeared in: Haryana CHO -2023

Explanation

Finger clubbing is a sign strongly associated with chronic diseases that cause hypoxia and inflammation.
Pulmonary suppuration refers to chronic pus-forming lung diseases like lung abscess, bronchiectasis, and empyema.
These conditions lead to chronic inflammation and right-to-left shunting of blood, which are key mechanisms thought to cause clubbing.
The release of growth factors (like PDGF) from trapped platelet precursors in the distal extremities stimulates connective tissue growth, resulting in the characteristic bulbous appearance of the fingertips.

Option A: Liver abscess is an acute infectious process. Finger clubbing develops over months to years and is associated with chronic conditions, not acute ones.
Option C: Typhoid fever is an acute systemic infection caused by Salmonella Typhi. It is not associated with the chronic changes that lead to finger clubbing.
Option D: A duodenal ulcer is a common condition related to peptic ulcer disease. There is no known pathophysiological link between duodenal ulcers and the development of finger clubbing.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Etiology of Finger Clubbing as background academic context rather than a clinical decision trigger.
Nurses should be able to assess for finger clubbing using the Schamroth's window test at the bedside, as it is a simple and quick screening tool.
The presence of new-onset clubbing is a significant clinical finding that warrants reporting and further investigation, as it can be the first sign of a serious underlying condition like lung cancer or chronic infection.
What if? If a patient presents with unilateral clubbing (clubbing in only one hand or foot), the nurse should suspect a localized vascular problem in that limb, such as an arterial aneurysm, an infected graft, or an arteriovenous fistula, rather than a systemic disease.

How to Approach the Question

First, understand the core concept: Finger clubbing is a physical sign associated with chronic diseases, not acute ones.
Analyze the question stem, which asks for a condition where finger clubbing is found.
Evaluate each option based on its chronicity and known associations. 'Pulmonary suppuration' represents a group of chronic lung infections.
Eliminate options that represent acute conditions (Liver abscess, Typhoid) or have no known association (Duodenal ulcer).
Recall that chronic lung diseases causing hypoxia are the most common causes of acquired clubbing. This points directly to pulmonary suppuration as the correct answer.

Concept Tested & Keywords

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E6 Medicine Davidson Principles Practice 24e p. 579-581

E6 Medicine Harrison 22e Part 2 p. 875-877

E6 Medicine Harrison 22e Part 1 p. 320-322

Practise the full Haryana CHO -2023

Attempt every question from this paper in a timed mock, then review the full solution for each one.