Clinical Scenario:
A 9-year-old boy is admitted with a 4-week history of low-grade fever, weight loss, and progressive shortness of breath. Examination reveals elevated jugular venous pressure, muffled heart sounds, and hepatomegaly. Chest radiograph shows cardiomegaly, and echocardiography demonstrates a large pericardial effusion. Pericardial fluid is an exudate with lymphocyte predominance and a markedly elevated adenosine deaminase (ADA) level.
What is the most appropriate treatment?
A. Anti-tuberculous therapy with corticosteroids
B. Broad-spectrum antibiotics
C. Intravenous immunoglobulin
D. Pericardiocentesis alone
E. Prednisolone alone
Correct answer & Explanation:
Explanation
Correct answer: A. Anti-tuberculous therapy with corticosteroids
The clinical presentation is highly suggestive of tuberculous pericarditis. The combination of a subacute constitutional illness, large pericardial effusion, lymphocyte-predominant exudative fluid, and elevated ADA strongly supports Mycobacterium tuberculosis as the underlying cause.
The cornerstone of treatment is standard anti-tuberculous therapy (ATT). Adjunctive corticosteroids may be used in tuberculous pericarditis, particularly when there is significant pericardial inflammation or concern about progression to constrictive pericarditis.
Why the other options are incorrect
B. Broad-spectrum antibiotics — Incorrect
Broad-spectrum antibacterial agents do not treat M. tuberculosis. They would be appropriate only when bacterial pericarditis is suspected based on the clinical context.
C. Intravenous immunoglobulin — Incorrect
IVIG has no established role in the treatment of tuberculous pericarditis.
D. Pericardiocentesis alone — Incorrect
Pericardiocentesis may be required for cardiac tamponade or a large symptomatic effusion, and obtaining pericardial fluid is useful diagnostically. However, drainage alone does not eradicate the underlying tuberculosis. Definitive treatment requires ATT.
E. Prednisolone alone — Incorrect
Corticosteroids can reduce pericardial inflammation but do not treat the underlying mycobacterial infection. Steroids should therefore never be used as sole therapy for tuberculous pericarditis.
Clinical pearl
Subacute fever and weight loss + lymphocyte-predominant pericardial effusion + elevated ADA → strongly suspect tuberculous pericarditis.
Treatment requires anti-tuberculous therapy, with corticosteroids used as adjunctive treatment in appropriate patients. If clinical or echocardiographic features of cardiac tamponade develop, urgent pericardial drainage is required.
Reference
World Health Organization. WHO consolidated guidelines on tuberculosis: Module 5: Management of tuberculosis in children and adolescents. Geneva: World Health Organization.
Test your knowledge by practicing more High-yield Pediatric infectious diseases MCQs.
