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Still's Murmur — RACP Paediatrics MCQ

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EasyCardiologyStill's MurmurRACP Paediatrics

A term neonate has an apical 2/6 systolic murmur. He is well, with SpO2 98% and normal femoral pulses. The murmur is musical (vibratory) in quality and varies with position. What is the most likely diagnosis?

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Correct answer: B — Innocent (Still's) murmur

Still's murmur is the most common innocent murmur in children. It is a low-pitched, musical/vibratory systolic murmur best heard at the left lower sternal edge/apex that varies with position and activity. Normal S1/S2, no clicks, no radiation, and no associated symptoms. No investigation is needed if all features are typical.

Reference: RCH Melbourne – 2024 – Clinical Practice Guidelines: Heart Murmurs