Hydrocephalus Medical ID: VP Shunt Warning Signs and What to Record

Hydrocephalus is usually managed so well that the shunt becomes part of normal life: a thin tube under the skin and regular check-ups. The difficulty is that when a shunt fails, it rarely announces itself. A child with a headache who vomits at school, an adult who becomes confused and sleepy at work — to a teacher, a colleague or a stranger, those are ordinary illnesses. To a neurosurgical team, they are an emergency. The medical ID closes that gap.

Hydrocephalus and shunts, briefly

According to healthdirect, hydrocephalus is a build-up of cerebrospinal fluid (CSF) in the brain. It is usually treated with a ventriculoperitoneal (VP) shunt, which drains the extra fluid from the brain into the abdomen to relieve pressure. A shunt does not cure hydrocephalus; it manages it.

The Sydney Children’s Hospitals Network describes the shunt as a long, thin tube under the skin with a one-way valve, whose outline can often be seen down the side of the neck. It explains that a shunt will not work properly if the tubing is blocked, kinked or disconnected, or if the valve is damaged, and that infection is more common soon after a shunt has been inserted or changed.

Why people have hydrocephalus

The Brain Foundation explains that hydrocephalus happens when the flow of CSF is blocked or the body cannot absorb it, so fluid builds up inside and around the brain. It can be congenital, present from birth, or acquired later. Causes it lists include genetic inheritance, developmental conditions such as spina bifida, complications of premature birth, meningitis, tumours, head injury and bleeding around the brain.

The cause matters to a responder because it often brings other conditions with it — spina bifida, epilepsy, a history of brain surgery — and each of those belongs on the record. The Brain Foundation also notes one easily missed sign: if a person with a shunt suddenly develops a squint, it may be the result of shunt complications.

Warning signs of shunt malfunction or infection

These lists come from healthdirect and the Sydney Children’s Hospitals Network. Not every sign appears every time, and any of them in someone with a shunt deserves urgent attention.

If the person is having a seizure, the first aid in our seizure first aid guide applies while you wait for the ambulance.

Why the medical ID matters

The person most likely to be with a child when a shunt fails is often not a parent: a teacher, a coach, a grandparent, a friend’s parent at a sleepover. An adult with a shunt may be at work, travelling or alone. In every case the first person to respond has to decide whether a headache and vomiting are worth an ambulance. Without knowing about the shunt, the reasonable answer is “wait and see”. With it, the answer is “call now”.

Australian resuscitation guidance builds that check in. ANZCOR Guideline 2 includes, in the initial assessment of an emergency, checking for “physical (eg. alert jewellery) or electronic alert devices (eg. smartphone application) that may be relevant to assessment or management”. For hydrocephalus, the readers are:

• The bystander deciding how urgent the symptoms are.
• The paramedic, who needs to know about the shunt to judge how urgent the symptoms are.
• The emergency team, who need the shunt history and the neurosurgeon’s contact before they can assess it.

What a hydrocephalus medical ID should say

On the band

• HYDROCEPHALUS — VP SHUNT
• HEADACHE / VOMITING / DROWSY = POSSIBLE SHUNT FAILURE
• Your membership number, so the rest can be read

In the profile

• The type of shunt and where it drains, and any valve details your neurosurgeon has given you.
• The date of the last shunt operation or revision, since infection is more common soon after one.
• What shunt failure has looked like before for you or your child, if it has happened.
• Your neurosurgical team and hospital, with an after-hours number.
• The underlying cause, other conditions such as epilepsy, medicines and allergies. A shunt is an implanted device; see what counts as a medical implant or device.
• Emergency contacts, in order. Our guide to setting up emergency contacts helps.

For parents: school, sport and sleepovers

Give every adult who looks after your child a short list of the warning signs and the instruction to call 000. A band on your child’s wrist, pointing to a profile those adults can read, makes sure the message is there even when you are not. For calling an ambulance, see five things to know when calling an ambulance.

Support in Australia

The Hydrocephalus Support Association describes itself as Australia’s only charity for people living with hydrocephalus, offering welfare support and connection. The Brain Foundation also has detailed information on hydrocephalus and shunts.

Keeping it current

Update the record after every shunt revision, after any admission for suspected shunt failure, and when your neurosurgical team or hospital changes. As a child grows, the way shunt failure shows up can change too — record what the team tells you to watch for at each stage.

FAQs

Sources

• healthdirect — Hydrocephalus — (reviewed September 2024) shunts, malfunction and infection signs, when to call 000.
• Sydney Children’s Hospitals Network — Hydrocephalus factsheet — how shunts work, why they fail and warning signs in children and babies.
• Hydrocephalus Support Association — support for people living with hydrocephalus in Australia.
• Brain Foundation — Hydrocephalus — causes, shunt systems and complications.
• ANZCOR Guideline 2 — Managing an Emergency — checking for alert jewellery and devices.

Disclaimer: This article is general information about recording hydrocephalus and shunt details for emergencies, not medical advice. Follow the instructions of your neurosurgical team about when to seek care. In an emergency, always call Triple Zero (000). For non-urgent health advice, call healthdirect on 1800 022 222 (NURSE-ON-CALL 1300 60 60 24 in Victoria, 13 HEALTH 13 43 25 84 in Queensland).

Related guides

• Seizure first aid
• What counts as a medical implant or device
• Five things to know when calling an ambulance
• How to set up your emergency contacts
• What is MedibandPlus?