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Myocarditis — RACP Paediatrics MCQ

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ModerateCardiologyMyocarditisRACP Paediatrics

A 15-year-old presents with chest pain, fever, and dyspnoea 10 days after a flu-like illness. He looks unwell. ECG shows sinus tachycardia with low-voltage QRS complexes and diffuse ST changes. Troponin is significantly elevated. Echocardiogram shows globally reduced LV function (EF 30%). What is the most likely diagnosis?

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Correct answer: E — Myocarditis

The combination of recent viral illness followed by chest pain, heart failure symptoms, elevated troponin, ECG changes (low voltage, ST changes), and reduced LV function on echocardiography is consistent with acute myocarditis. This is a medical emergency requiring close monitoring and cardiology input.

Reference: RCH Melbourne – 2023 – Myocarditis CPG; RACP Paediatric Curriculum – Cardiology