Shunt or ETV for Congenital Hydrocephalus: How Do Pediatric Neurosurgeons Choose?

The ultrasound tech has gone quiet, and a parent who came in expecting to hear a heartbeat is instead learning a new vocabulary: ventricles, cerebrospinal fluid, head circumference. Within weeks, that vocabulary grows to include two words that will shape years of appointments. Shunt. ETV. The surgeon says both are reasonable, then explains why one might suit this particular baby better than the other.

Families searching for shunt vs ETV for hydrocephalus usually want a verdict. Which is safer? Which lasts? The honest answer is that these are two different tools for two slightly different problems, and the skill lies in matching the tool to the child. A surgeon is weighing where the fluid is getting stuck, how old the infant is, and whether the brain’s own drainage system can be trusted to take over.

This explainer walks through what each operation does, who tends to be offered which, what the evidence really shows, and what the weeks afterward look like. It is not a substitute for the conversation with your child’s team; think of it as preparation for it.

What is congenital hydrocephalus, and why does the extra fluid matter?

Cerebrospinal fluid, usually shortened to CSF, is the clear liquid that bathes the brain and spinal cord, cushioning them and carrying away waste. It is made continuously inside four connected chambers called ventricles, flows through narrow channels, exits around the base of the brain, and is reabsorbed into the bloodstream over the brain’s surface. Production never pauses, so the system depends on drainage keeping pace.

Hydrocephalus is what happens when it does not. Fluid accumulates, the ventricles enlarge, and pressure rises inside a skull that, in a newborn, is still soft and can stretch. That stretching is why an enlarging head or a tense, bulging fontanelle (the soft spot) is often the first clue. Congenital simply means the problem was present at birth or developed from a cause that existed before birth, such as narrowing of the channel between the third and fourth ventricles (aqueductal stenosis), spina bifida, or bleeding into the ventricles in a premature infant.

The National Institute of Neurological Disorders and Stroke estimates hydrocephalus affects roughly one to two of every 1,000 babies born, which makes it one of the more common reasons a child meets a neurosurgeon in the first year of life.

Why the urgency? Rising pressure squeezes developing brain tissue and interferes with blood flow. Left untreated, that pressure threatens vision, motor development and cognition. Every surgical option for hydrocephalus is trying to do one thing: give the fluid somewhere to go before pressure does harm. The two main strategies differ in how they achieve it, and that difference is the whole story of shunt vs ETV for hydrocephalus.

How does a shunt actually work?

A shunt is a slim, flexible tube with a one-way valve that carries CSF from the ventricles to another part of the body where it can be absorbed. The most common version is the ventriculoperitoneal (VP) shunt, which ends in the abdominal cavity, the space around the intestines that readily soaks up fluid. Less often, the tube is routed to the heart’s upper chamber or the lining of the lung.

In the operating room, the child is asleep under general anesthesia. The surgeon makes a small incision on the scalp, opens a coin-sized window in the skull, and guides the upper catheter into a ventricle, often with image guidance. The valve sits just under the scalp, usually behind the ear. From there, a tunnel is created beneath the skin, down the neck and chest, to a small incision on the abdomen where the lower catheter is placed. The whole device is hidden; a parent might feel the valve as a firm bump but sees only healing scars. MedlinePlus describes the operation typically taking around an hour and a half.

The valve is the clever part. It opens when pressure in the ventricles exceeds a set threshold and closes again as pressure normalizes, so fluid drains only as fast as it accumulates. Some valves have a fixed setting; programmable models let the team adjust the opening pressure from outside the skin with a magnetic tool, which can avoid a return to surgery if drainage needs fine-tuning.

A shunt does not repair the underlying problem. It bypasses it. That is both its strength and its weakness: it works regardless of where the blockage is or whether absorption is impaired, but the child now depends on a mechanical device for life, and mechanical devices can fail.

How does ETV work, and what happens during the operation?

Endoscopic third ventriculostomy takes the opposite philosophy. Instead of adding hardware, the surgeon creates a new internal opening so that trapped fluid can reach the areas where it is normally absorbed. Ventriculostomy means making an opening in a ventricle; endoscopic means it is done through a thin tube with a camera and light.

Under general anesthesia, the surgeon makes a single small incision on the scalp and a small opening in the skull, then passes the endoscope through brain tissue into one of the two lateral ventricles and onward into the third ventricle, a narrow chamber in the center of the brain. On the floor of the third ventricle lies a thin, translucent membrane. Using a fine instrument, sometimes a small balloon, the surgeon makes a hole in that membrane. Fluid that was dammed behind a downstream blockage can now flow directly into the fluid spaces at the base of the brain and be reabsorbed by the body’s own machinery.

Some teams combine ETV with choroid plexus cauterization (CPC), which uses gentle heat to reduce the tissue that produces most CSF, so less fluid is made in the first place. The Johns Hopkins Medicine overview of hydrocephalus treatment describes this combined approach as an option in selected infants.

When ETV works, the child leaves the operating room with nothing implanted. There is no valve to malfunction, no tube to break, no foreign material to harbor infection years later. The trade-off is that ETV can only help if the body downstream of the new opening is capable of absorbing fluid. If the problem is poor absorption rather than a blockage, opening a new door leads nowhere useful.

Shunt vs ETV for hydrocephalus: the core trade-off surgeons are weighing

Strip away the anatomy and the choice comes down to a bet about the future. A shunt offers a high chance of controlling pressure right away in almost any type of hydrocephalus, but commits the child to a device that may need repeated repair over a lifetime. ETV offers the possibility of device-free control, but carries a real chance of not working, and that risk is front-loaded into the first weeks and months.

Neurosurgeons often describe it in terms of where the risk lives. With a shunt, the risk is spread across years: a blockage at age three, an infection during a hospital stay, a catheter that pulls out of the abdomen during a growth spurt. With ETV, much of the risk is concentrated early. If the opening scars over or the brain’s absorption cannot cope, pressure climbs again, usually soon, and the child needs another operation, often a shunt after all.

Three questions dominate the decision, and the Mayo Clinic treatment overview reflects the same logic:

• Is there a clear physical blockage on imaging, or is the whole drainage system sluggish?
• How old is the child, and therefore how mature is the fluid absorption system?
• Has the child had a shunt or a brain infection before, which can scar the absorbing surfaces?

A yes to a visible blockage, an older infant, and no previous shunt pushes many surgeons toward ETV. A very young baby with hydrocephalus after prematurity-related bleeding pushes them toward a shunt. Most real children sit somewhere between those poles, which is why the conversation with the surgeon rarely ends in a single sentence.

Who is a good candidate for ETV?

The best-established tool for answering this is the ETV Success Score, a bedside scoring system developed by pediatric neurosurgeons and validated in large multicenter studies published in the peer-reviewed literature. It does not require a scan reader or a specialist calculator; it uses three facts the surgeon already knows.

The first is age. The score awards the fewest points to infants under about one month, more to those between one and six months, more again for six months to one year, and the most for children older than about ten years. Younger infants have less mature absorption, and their fluid spaces are less developed, so a new opening is less likely to keep pressure down.

The second is the cause. Hydrocephalus from aqueductal stenosis, from a tumor blocking the outflow, or from other clearly obstructive causes earns the highest points. Hydrocephalus following infection scores lowest, because meningitis can scar the very surfaces that would need to absorb the redirected fluid. Bleeding in prematurity and spina bifida sit in the middle.

The third is history. A child who has never had a shunt scores higher than one who has, since a previous shunt suggests the absorption system may already have been judged unreliable, and drainage through a shunt can itself change the anatomy.

Add the points and the score gives a rough estimate of the chance the ETV will still be working six months later, ranging from low to high. Surgeons use it as a conversation starter rather than a verdict; a child with a middling score might still be offered ETV if the family values avoiding hardware and accepts the possibility of a second operation. The NHS summarizes the same idea plainly: ETV is an option only when fluid is blocked rather than poorly absorbed, so the candidate is the child whose imaging tells that particular story.

Who is usually steered toward a shunt, and who is asked to wait?

A shunt is the default when the problem is communicating hydrocephalus, meaning fluid can move between the ventricles but is not being absorbed properly. Redirecting fluid inside the head cannot help if the absorbing surfaces are the failure point. Babies born very prematurely who develop hydrocephalus after bleeding into the ventricles are the classic example; so are children whose hydrocephalus follows meningitis.

Age matters independently. Newborns and infants in the first few months of life have historically had lower ETV durability, so many surgeons favor a shunt, or ETV combined with choroid plexus cauterization, in that window. Some teams will offer ETV first to an infant with a favorable anatomy and a clear blockage, planning to convert to a shunt quickly if pressure recurs. Others prefer the predictability of a shunt from the start. Both are within mainstream practice.

Then there are children who are asked to wait, at least a little. A premature infant whose ventricles are enlarging slowly and whose head growth is being tracked may be monitored with serial ultrasound before any operation, because early bleeding sometimes clears and the fluid dynamics settle. Temporary measures, such as a reservoir under the scalp that can be tapped with a needle to remove fluid, can buy time until the baby is bigger and the picture is clearer. The NINDS notes that treatment timing depends on symptoms, imaging trends and the child’s overall condition.

Waiting is never the same as ignoring. It means a defined plan: measure the head at each visit, scan on a schedule, and act at agreed thresholds. Families in this position should ask what those thresholds are, so the wait feels like a strategy rather than a limbo.

Shunt vs ETV for hydrocephalus at a glance

The table below gathers the practical differences families most often ask about. It describes typical patterns drawn from the NHS and Mayo Clinic overviews, not guarantees for any individual child.

Question	Shunt	ETV
What is done	Tube and valve implanted, draining fluid to the abdomen or another body cavity	Small opening made in the floor of the third ventricle; nothing implanted
Works for which type	Obstructive and communicating (poor absorption) hydrocephalus	Mainly obstructive hydrocephalus with intact absorption
Typical age fit	Any age, including newborns	Generally more durable in older infants and children
When failure tends to occur	Spread across the lifetime; blockage, disconnection, infection	Concentrated in the first weeks to months; late failure possible but less common
What failure looks like	Pressure symptoms return; imaging and shunt series needed	Pressure symptoms return; usually treated with repeat ETV or a shunt
Hardware for life	Yes, unless a later ETV allows removal in select cases	No, if successful
Infection risk pattern	Highest in the first months after implantation; recurs with each revision	Wound infection possible; no device to seed later infection
Follow-up	Lifelong, with imaging when symptoms arise	Lifelong vigilance still required; imaging to confirm ventricles are stable

Notice what the table does not contain: a winner. Each row describes a trade, and different families weigh the trades differently. A family living far from specialist care may value the lower long-term maintenance of a successful ETV; another may prefer the immediate reliability of a shunt for a fragile newborn. Both are defensible when the anatomy supports them.

Is ETV surgery better than a shunt? What the evidence actually shows

This is the question families type most, and the most honest answer is: better at what, and for whom? Large comparative studies and systematic reviews indexed on PubMed have compared the two in children. The pattern that emerges is consistent even if the exact numbers vary by study.

In the first few months after surgery, ETV tends to fail more often than a shunt, because the opening may close or the absorption system may prove inadequate. Among children whose ETV is still working after that early period, subsequent failure becomes less frequent than the ongoing revision rate seen with shunts. Over several years, the two approaches converge in many analyses, with ETV sometimes edging ahead in older children with obstructive causes and shunts remaining more reliable in young infants and in communicating hydrocephalus.

Infection is where ETV has a clearer advantage. Without an implanted device, there is no hardware for bacteria to colonize months or years later, and the wound infection risk of a single small incision is lower than the cumulative infection exposure of repeated shunt revisions.

Developmental outcomes are the hardest to compare. Children who undergo the two procedures differ from the start in age and cause, and hydrocephalus itself, not the operation, drives most of the developmental risk. The studies that have looked carefully have not shown a clear cognitive advantage for either operation once those differences are accounted for.

What this means at the bedside: ETV is not better than a shunt in general. It is better in a defined group, roughly the same in a middle group, and worse in the youngest infants and in absorption-type hydrocephalus. The Mayo Clinic frames it the same way: ETV is an alternative for some people, not a replacement for shunting across the board.

What are the drawbacks of ETV?

ETV’s appeal, no hardware, can make it sound like the obvious choice. It has real limitations that deserve equal airtime.

The first is uncertainty. A shunt controls pressure the day it is placed. With ETV, the family goes home not knowing for certain whether it has worked. Symptoms can return within days or weeks, and a child who seemed well can deteriorate quickly if the opening closes. That period of watching is emotionally hard, and it demands that parents know the warning signs cold.

The second is the path through brain tissue. The endoscope crosses a small amount of brain to reach the ventricle, and the floor of the third ventricle sits close to structures that control hormones, body temperature, memory and the major arteries at the base of the brain. Complications are uncommon in experienced hands but can include bleeding, injury to those structures, temporary changes in sodium balance or thirst, and, rarely, injury to a blood vessel. The NHS treatment page lists bleeding and infection among the risks of both operations.

The third drawback is anatomical. Some children simply do not have a third ventricle large enough, or a floor thin enough, for a safe opening; occasionally the surgeon begins the procedure and decides it cannot be done, placing a shunt instead. Families should know that this switch is a planned contingency, not a failure.

Finally, ETV does not remove the need for lifelong attention. Late closure of the opening, years after surgery, is uncommon but documented, and because there is no valve to check, diagnosis relies on recognizing symptoms and repeating imaging. A child with a successful ETV still lives with hydrocephalus; the condition is managed, not gone.

What are the VP shunt complications in children that families should understand?

Shunts save lives, and they also generate more return trips to the hospital than almost any other pediatric neurosurgical device. Understanding why helps families make sense of the surgeon’s caution.

Blockage is the most frequent problem. The tip of the upper catheter can become clogged by brain tissue or the fluid-producing choroid plexus growing into it; debris or protein can obstruct the valve; the lower catheter can be walled off by tissue in the abdomen. When drainage stops, pressure rises and the original symptoms return. Fixing a blockage means another operation to replace the affected part.

Disconnection and fracture come with growth. The tube is placed in a small body that will roughly triple in length. Over years, the tubing can pull apart at connections, break, or end up too short to reach the abdomen. Some surgeons leave extra length coiled in the abdomen to allow for growth, but revisions for this reason remain common in adolescence.

Infection is the complication surgeons fear most. The NINDS notes that shunt infections most often occur in the first months after placement. Treatment usually requires removing the entire system, treating the infection with antibiotics chosen by the team, and later implanting a new shunt.

Overdrainage is the quieter problem. If the valve lets too much fluid out, the ventricles collapse into slit-like spaces, causing headaches that are worse when upright, and, in some children, a stiff ventricular wall that makes later blockages more likely. Programmable valves and anti-siphon devices were designed to address this, though none eliminates it.

None of these are reasons to refuse a shunt when it is the right operation. They are reasons a surgeon might reach for ETV when the anatomy allows, and reasons every family with a shunted child learns to keep a low threshold for calling.

Can you live with hydrocephalus without a shunt?

Yes, some people do, and the routes there differ.

The most common is a successful ETV. A child whose opening stays functional can live for decades with no implanted device, managing hydrocephalus much as one manages any chronic condition that is currently stable: aware of warning signs, attending follow-up, but not defined by hardware. The combined ETV with choroid plexus cauterization approach was developed partly to extend this possibility to younger infants by reducing fluid production alongside improving drainage; it is offered by some centers and studied in comparative trials, though it is not universally adopted and the treating team will explain whether it suits a particular child.

A second route is arrested hydrocephalus, in which enlarged ventricles stop growing and pressure stabilizes without surgery. This is diagnosed in retrospect, after careful monitoring shows no progression, and it is not something a family can bank on in advance. Surgeons watch these children closely because a compensated system can lose its balance later, especially during illness or head injury.

A third route is the child who had a shunt for years, then developed a clear blockage on imaging and was offered an ETV at the time of shunt failure, with the shunt subsequently tied off or removed. This shunt-to-ETV conversion is well described in the literature and is one reason some surgeons keep ETV in mind even when the initial operation was a shunt.

What living without a shunt does not mean is living without hydrocephalus. The Johns Hopkins Medicine overview is clear that hydrocephalus is a lifelong condition requiring ongoing care regardless of the method used to control it. Whichever path a child is on, the principle is the same: pressure controlled, development supported, and a team that knows the child’s baseline well enough to spot a change.

What do the first days and weeks after surgery usually look like?

Recovery from either operation is shorter than most parents expect, and longer in the mind than on the calendar.

After a shunt, children are typically in the hospital for a few days while the team confirms drainage is working, watches the incisions and checks that the child is feeding and settling normally. The NHS describes a hospital stay of a few days as typical after shunt surgery. Infants often have a small dressing on the scalp and abdomen; older children may have a mild headache or neck stiffness for a short time. Parents are shown how to feel the valve and taught the warning signs before discharge.

After ETV, the stay is similar and sometimes shorter, because there is a single incision and no abdominal wound. Imaging in the first days may show the ventricles unchanged in size; that is expected. Ventricles after a successful ETV often shrink slowly, or not at all, even when pressure is well controlled, so the team judges success by the child rather than by the scan alone.

At home, the first two to six weeks are the critical window. Incisions heal, activity returns to normal for the child’s age, and the team usually schedules a clinic visit with imaging. For ETV, this is the period when early failure declares itself, which is why families are asked to watch closely and call without hesitation.

Beyond that, follow-up shifts to routine: head circumference at each pediatric visit in infancy, developmental checks, and imaging when there is a clinical reason. Many centers give families a card or letter describing the child’s device and settings so that any emergency department can act quickly. Keep it with you; it saves time when time matters.

What people often get wrong about shunts and ETV

Some of the most persistent beliefs about these operations are half true, which makes them harder to shake than outright myths.

Myth: ETV is the modern option and shunts are outdated. ETV has a long history and has become more widely used as endoscopes improved, but shunts remain the most common treatment worldwide because they work for types of hydrocephalus that ETV cannot address. Choosing a shunt is not settling for older technology; it is matching the operation to the physiology.

Myth: once an ETV works, hydrocephalus is over. Late failure is uncommon but real, and the child still has hydrocephalus. Lifelong awareness of pressure symptoms applies to both groups.

Myth: a shunt will need replacing every few years like clockwork. Some children need many revisions; others go a decade or more without one. Revisions are common enough that families should expect the possibility, not so predictable that anyone can promise a schedule.

Myth: bigger ventricles on a scan always mean the treatment is failing. Ventricle size is one clue among many. After ETV in particular, ventricles may stay large while pressure is normal. The child’s behavior, feeding, alertness and head growth carry as much weight as the images.

Myth: children with a shunt cannot play sports or fly. Most can do both. Contact sports are discussed case by case with the team, and commercial flying is not restricted for a functioning shunt. Programmable valves can be affected by strong magnets, so families are told which devices and imaging scanners require a settings check afterward.

Myth: the surgeon can tell in advance which operation will succeed. The Mayo Clinic and every specialist overview describe both procedures as options with trade-offs, not certainties. Scoring systems estimate likelihood; they do not guarantee outcomes.

Questions to ask your care team before deciding

A good consultation leaves a family able to explain, in their own words, why this operation for this child. These questions tend to get there.

• What type of hydrocephalus does my child have, obstructive or communicating, and what on the imaging tells you that?
• If you are recommending ETV, what would my child’s ETV Success Score be, and how do you interpret it?
• If you are recommending a shunt, is there a reason ETV is not suitable now, and could it become suitable later?
• Would you consider ETV combined with choroid plexus cauterization for my child, and why or why not?
• If you begin an ETV and find the anatomy unsafe, what is the plan in the operating room?
• Which valve type are you planning, fixed or programmable, and what are the practical implications at home?
• What specific signs should make me call, and what number do I call at night or on a weekend?
• How will we know in the first weeks whether the ETV is working, and when is the first follow-up scan?
• What is your team’s approach if the first operation fails: repeat ETV, shunt, or something else?
• How will my child’s development be monitored, and who coordinates that?

Write the answers down, or ask whether the appointment can be recorded. Parents facing this decision are often running on little sleep, and the details blur. If the answers to any of these feel unclear, saying so is not rude; it is part of shared decision-making, and most surgeons welcome it. The NINDS emphasizes that treatment is individualized, which is another way of saying that your questions are the raw material the surgeon needs.

When to call your doctor: red-flag signs after shunt or ETV

Both operations share one rule: if pressure symptoms return, the drainage may have failed, and that is urgent. Families are taught this before discharge, and it bears repeating because the signs differ by age.

In infants, watch for a fontanelle that feels tense or bulges when the baby is calm and upright, a head growing faster than expected between visits, vomiting that is repeated or forceful, unusual sleepiness or difficulty waking, high-pitched or inconsolable crying, poor feeding, or eyes that seem to look downward with the whites showing above the iris.

In older children, the classic cluster is headache, vomiting, and drowsiness, especially headache that is worse in the morning or wakes the child. Other signs include new double vision or blurred vision, irritability or personality change, loss of previously mastered skills, unsteadiness, or seizures.

For any child after either operation, seek immediate care for fever with a stiff neck, redness or swelling along the shunt track or at an incision, fluid leaking from a wound, a swollen or tender abdomen in a child with a VP shunt, or any sudden decline in alertness. The NHS and Mayo Clinic both list these as reasons to seek urgent assessment.

Do not wait to see whether it passes. Shunt and ETV failure can progress over hours, and emergency teams would far rather evaluate a well child than treat a deteriorating one. Bring the device card or the surgeon’s letter, tell the triage staff the child has hydrocephalus and which operation was performed, and ask that the neurosurgical team be contacted.

These lists are for recognizing when to act, not for diagnosing at home. Only imaging and clinical assessment can confirm whether drainage has failed, and the decision about what happens next always sits with your child’s treating team.

Frequently asked questions

Is ETV surgery better than a shunt for a baby with hydrocephalus?

Neither is better across the board. ETV tends to be more durable in older infants and children with a clear blockage, while a shunt is more reliable in very young babies and when the problem is poor fluid absorption. Comparative studies show ETV fails more often early but less often later, so the two approaches converge over years in many groups. The right choice depends on the individual child’s anatomy, age and history.

Who is a good candidate for ETV?

The typical candidate is an infant or child older than a few months with obstructive hydrocephalus, most often from aqueductal stenosis or a mass blocking outflow, who has never had a shunt. Surgeons often use the ETV Success Score, which combines age, cause and shunt history, to estimate how likely the opening is to keep working. Children with hydrocephalus after infection or prematurity-related bleeding generally score lower.

What are the drawbacks of ETV?

The main drawback is uncertainty: the opening can scar closed, most often in the first weeks to months, and the child then needs another operation, usually a shunt. The procedure also passes close to delicate structures at the base of the brain, so bleeding, hormonal or fluid-balance changes and vessel injury are uncommon but possible risks. Some children lack the anatomy for a safe opening, and late failure years afterward, although rare, still requires lifelong vigilance.

Can you live with hydrocephalus without a shunt?

Yes. Children whose ETV keeps working can live for decades with nothing implanted, and some who had a shunt are later converted to ETV when a blockage is confirmed and the shunt fails. A small number have arrested hydrocephalus that stabilizes without surgery, though this is recognized only after careful monitoring. Living without a shunt still means living with hydrocephalus, so follow-up and awareness of pressure symptoms continue for life.

How does the ETV Success Score work?

It adds points from three categories: the child’s age, with older children scoring higher; the cause of hydrocephalus, with obstructive causes scoring highest and post-infectious hydrocephalus lowest; and whether the child has had a previous shunt, which lowers the score. The total gives a rough estimate of the chance the ETV will still be functioning six months later. Surgeons treat it as a guide for discussion with families rather than a definitive answer.

How long does a VP shunt last in a child?

There is no fixed lifespan. Some children go many years without a problem, while others need several revisions during childhood for blockage, disconnection with growth, infection or overdrainage. Specialist sources such as the NHS describe revision as a common part of living with a shunt rather than an exception. Families are taught the signs of malfunction so that any failure is recognized and treated promptly, whenever it happens.

What happens if an ETV fails?

Pressure symptoms return, and the team confirms the problem with clinical assessment and imaging. Options then include repeating the ETV, since a closed opening can sometimes be reopened, or placing a shunt. The choice depends on why the first attempt failed and on the child’s current anatomy. Because early failure is the most common pattern, families are asked to watch closely in the first weeks and to seek urgent care for vomiting, drowsiness, a bulging fontanelle or new headache.

Can a child have ETV after already having a shunt?

Sometimes. When a shunted child develops shunt failure and imaging shows a clear obstructive pattern, some surgeons offer an ETV at that point and tie off or remove the shunt if the ETV works. A previous shunt does lower the ETV Success Score, because it suggests the absorption system may be less reliable, so this route suits only selected children. The treating team weighs the child’s history and anatomy before recommending it.

Does ETV with choroid plexus cauterization work better in infants?

It may improve durability in some young infants compared with ETV alone, which is why the combination was developed, but the evidence is still evolving and practice varies between centers. Choroid plexus cauterization reduces the tissue that produces most cerebrospinal fluid, while the ETV opening improves drainage. Whether it is appropriate for a particular baby depends on age, cause and the surgeon’s experience with the technique; ask your team whether it is an option they consider.

Will my child's ventricles shrink back to normal after surgery?

Not necessarily, and that is not a sign of failure. After a shunt, ventricles usually become smaller within weeks. After ETV, they often stay enlarged or shrink only slightly even when pressure is well controlled, because the fluid is being redirected rather than actively drained. Surgeons judge success mainly by how the child is doing: head growth, alertness, feeding and development, with imaging used as one piece of the picture.

References

• NHS: Hydrocephalus, Treatment
• MedlinePlus Medical Encyclopedia: Ventriculoperitoneal shunt
• NIH, National Institute of Neurological Disorders and Stroke: Hydrocephalus

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.