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Fontan Veno-Venous Collaterals — RACP Paediatrics MCQ

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HardCardiologyFontan Veno-Venous CollateralsRACP Paediatrics

A 7-year-old post Fontan procedure has progressive cyanosis with SpO2 of 82%. Cardiac catheterisation shows development of veno-venous collaterals draining deoxygenated blood to the pulmonary veins. What is the treatment?

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Correct answer: A — Transcatheter coil or device embolisation of the collaterals

Veno-venous collaterals develop in approximately 50% of Fontan patients and cause progressive cyanosis by shunting deoxygenated systemic venous blood into the pulmonary veins. Transcatheter embolisation using coils or vascular plugs is effective.

Reference: RCH Melbourne – 2024 – Clinical Practice Guidelines: Fontan Complications