Correct option is B
Dressler syndrome is a delayed post-myocardial infarction (MI) pericarditis, thought to be autoimmune in nature. It typically presents 2 to 3 weeks after an MI, not 2–3 days. Symptoms include fever, pleuritic chest pain, and pericardial effusion. It results from an immune-mediated response to necrotic myocardial tissue. Treatment includes NSAIDs and corticosteroids in severe cases.
Explanation of options: (a) Characterised by pericarditis with effusion and fever – True. These are classic clinical features of Dressler syndrome. (b) Fever develops 2 to 3 days after an MI – This is the correct answer (NOT related). Pericarditis due to Dressler syndrome occurs later, usually after 1–3 weeks. (c) Caused due to antigen-antibody reaction – True. It is an autoimmune reaction triggered by myocardial injury. (d) Corticosteroid therapy is used for treatment – True. Corticosteroids are used when NSAIDs fail or in recurrent cases.