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CCHD pulse ox screening — RACP Paediatrics MCQ

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EasyCardiologyCCHD pulse ox screeningRACP Paediatrics

Critical congenital heart disease screening using pulse oximetry is performed on well newborns before discharge. What is the recommended timing and what SpO2 threshold triggers further investigation?

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Correct answer: A — Newborn pulse oximetry screening

Newborn pulse oximetry screening for CCHD is performed at 24-48 hours of age (or before discharge if earlier). A positive screen is defined as SpO2 <95% in either limb, or >3% difference between right hand and foot. A positive screen requires urgent echocardiography and cardiology review. It primarily detects duct-dependent and cyanotic lesions.

Reference: RCH Melbourne – 2023 – Newborn Screening CPG; RACP Paediatric Curriculum – Cardiology/Neonatology