Paediatric interventions, including vein of Galen embolization

Reviewed by Dr. Mohamed Aggour · Last reviewed 4 October 2026

Babies and children can have blood vessel problems of the brain and spine, including AVMs, fistulas, and rare malformations such as the vein of Galen malformation, a tangle where arteries connect straight into a large deep brain vein. Children are not small adults, and their management is different and specialised. In a vein of Galen malformation, newborns may have heart strain because of the large flow through the malformation, babies may have a growing head size because fluid collects, or seizures, and older children may have developmental delay. Embolisation closes the abnormal connections with a catheter, usually in stages, and the timing depends on how the baby's heart and brain are coping; the goal is often to reduce flow and protect the brain and heart, not always to close everything at once. Care involves a team of paediatric neurology, paediatric cardiology and intensive care, anaesthesia, neurosurgery and neuroradiology. Risks include bleeding, stroke, developmental problems and anaesthetic risks, and these are discussed with you individually. Questions for parents: What is the plan and timing? How will you protect my child's heart? What follow-up will be needed? Get urgent help if your child has a seizure, sudden weakness, repeated vomiting with unusual sleepiness, or breathing difficulty.

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