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Kidney & Urinary Health

Preparing a Child for Vesicoureteral Reflux Surgery: Fasting, Comfort and What to Explain

26 min read
Preparing a Child for Vesicoureteral Reflux Surgery: Fasting, Comfort and What to Explain

Key Takeaways

  • Vesicoureteral reflux is graded I to V on a bladder x-ray study, and lower grades frequently resolve on their own as the tunnel through the bladder wall lengthens with growth.
  • The AUA guideline meta-analysis reported reflux resolution in about 98 percent of ureters after open reimplantation and about 83 percent after a single endoscopic injection, figures that describe imaging results rather than a guarantee of no future infections.
  • Fasting before anesthesia is staged, with solids stopped earliest and clear fluids allowed closest to the operation; the written times from your program override any general rule.
  • Constipation and urine-holding habits worsen reflux and post-operative bladder spasms, which is why the AUA guideline advises addressing bladder-and-bowel patterns before and after surgery.
  • The RIVUR trial found preventive antibiotics roughly halved recurrent urinary infections in children with VUR but did not show a measurable reduction in new kidney scarring over two years.
  • Young children commonly wake from anesthesia confused and inconsolable for a short period; it is a recognized effect rather than a sign of pain or a complication.
Quick Answer

Preparing a child for vesicoureteral reflux (VUR) surgery means following the surgical team's written fasting times exactly, keeping the child as well as possible in the weeks beforehand, packing familiar comfort items, and explaining the day in short, honest, age-appropriate words. Fasting protects the airway under anesthesia, comfort planning lowers distress, and the treating team makes every decision about timing, technique, and medicines.

The night before, a father sits at the kitchen table with a permission form he has already signed twice in his head, while his four-year-old wanders in and asks whether the doctor is going to “fix the pee tube” with a screwdriver. The question is funny for about a second. Then it lands: how do you explain an operation on a part of the body nobody can see, to someone who still believes bandages have healing powers?

Preparing a child for VUR surgery is mostly not about the operation itself. Surgeons and anesthesiologists handle that part with a well-worn routine. The parent’s job is quieter and, in its own way, harder: getting fasting right without a meltdown, choosing the words that make a mask or an IV feel survivable, and knowing which signs afterward mean “normal” and which mean “pick up the phone.”

This guide walks through all three, in the order a family actually meets them, and it is candid about what the evidence does and does not say.

What is vesicoureteral reflux, and why is surgery on the table?

Urine is supposed to travel one way. It leaves each kidney through a thin tube called a ureter, enters the bladder, and stays there until the child pees. Where the ureter meets the bladder wall, it runs for a short distance inside the muscle before opening, and that tunnel behaves like a flap valve: when the bladder fills or squeezes, the tunnel flattens shut. Vesicoureteral reflux, usually shortened to VUR, is the name for urine sliding backward through that valve toward one or both kidneys.

Most childhood VUR is “primary,” meaning the child was born with a tunnel that is shorter or angled differently than usual. Less often it is “secondary,” caused by something downstream, such as a blockage or a bladder that empties poorly. Doctors describe the severity on a five-point scale seen on a bladder x-ray study: grade I is a small backflow into the lower ureter, grade V means urine balloons the kidney’s collecting system and twists the ureter, according to Mayo Clinic.

Reflux on its own does not hurt. The problem is what it carries. A routine bladder infection normally stays in the bladder; with reflux, bacteria have an open road to the kidney, and a kidney infection in a small child can leave a permanent scar. Surgery exists for one reason only: to close that road, either by rebuilding a longer tunnel or by narrowing the ureter’s opening so it seals more reliably.

That framing matters for parents, because it explains why a child who “never seems sick” may still be offered an operation, and why a child with several fevers may be asked to wait. The decision turns on infection risk and kidney protection, not on how the child looks on an ordinary Tuesday.

How VUR surgery actually works: reimplantation and endoscopic injection

Two very different procedures share the same goal. Which one a surgeon suggests depends on the reflux grade, the child’s age, the shape of the ureter, and any earlier attempts.

Doctor explaining urinary system diagram to child and mother: How VUR surgery actually works: reimplantation and endoscopic

Ureteral reimplantation is the traditional operation. The surgeon frees the lower end of the ureter, then re-routes it through a longer tunnel in the bladder wall before stitching the opening in a new position. The longer tunnel restores the flap-valve effect. Surgeons reach the bladder in one of two ways: through a small incision low on the abdomen, often hidden below the underwear line, or with laparoscopic or robot-assisted instruments passed through several tiny openings. Either way the child is fully asleep under general anesthesia, and a soft catheter (a thin drainage tube) usually stays in the bladder for a while afterward so the repair can rest, as described by Mayo Clinic.

Endoscopic injection, sometimes called the bulking procedure, involves no external cut at all. With the child asleep, the surgeon passes a slim telescope through the urethra into the bladder and injects a small amount of a gel-like bulking material just beneath the ureter’s opening. The resulting mound props the opening closed. Mayo Clinic notes this is an outpatient procedure in most cases, and the anesthesia is usually short.

A few practical differences follow from the mechanics. Reimplantation is a bigger operation with a longer recovery, and it is chosen more often for higher grades or unusual anatomy. Injection is quicker and gentler on the body but may need to be repeated. Neither can reverse kidney scarring that has already happened, and neither changes the child’s tendency to get bladder infections; both simply stop those infections from climbing.

Do kids outgrow VUR? Who is offered surgery and who is asked to wait

Many children do outgrow it. As a child grows, the tunnel through the bladder wall lengthens naturally and the valve tightens. Mayo Clinic and the National Institute of Diabetes and Digestive and Kidney Diseases both note that lower grades of primary VUR frequently resolve on their own during childhood, while higher grades resolve less often and more slowly. This is why the first plan for many families is not surgery at all but watchful waiting, sometimes with a low, daily preventive antibiotic decided by the treating team.

Surgery tends to come up when waiting is no longer serving the child. The American Urological Association guideline summary (Peters and colleagues, Journal of Urology) frames the common triggers this way: kidney infections that keep breaking through despite prevention, high-grade reflux that shows no sign of improving, evidence of kidney scarring or reduced kidney growth on imaging, or a family that, after honest counseling, prefers a definitive step over years of antibiotics and repeat x-ray studies. Older children whose reflux has stubbornly persisted are also more likely to be offered a procedure, because the odds of spontaneous resolution fall with age.

Who is usually asked to wait? Infants and toddlers with grade I to III reflux and no fevers, children whose ultrasound shows healthy kidneys, and, importantly, children whose reflux is being driven by constipation or bladder-holding habits. Treating that bladder-and-bowel pattern often improves reflux enough that surgery is unnecessary, and the AUA guideline specifically recommends addressing it before operating.

Two things follow for a parent. First, being offered surgery is not a verdict that something went wrong; it is a judgment that the risk balance has shifted. Second, being asked to wait is not neglect. Both are legitimate positions on the same evidence, and the treating team weighs them for your child specifically.

Watchful waiting, injection, or reimplantation: a side-by-side view

Families are often handed all three options in one appointment. The table sets them next to each other so the trade-offs are visible at a glance. Everything here describes typical patterns reported by Mayo Clinic and the AUA guideline; the specifics for any individual child come from the surgeon.

Doctor consulting with mother and child in hospital bed: Watchful waiting, injection, or reimplantation: a side-by-side view
Feature Watchful waiting (with or without preventive antibiotic) Endoscopic injection Ureteral reimplantation
What happens Regular check-ups, imaging at intervals, prompt treatment of any infection Bulking gel placed under ureter opening via telescope, no incision Ureter re-tunneled through bladder wall via incision or laparoscopic ports
Anesthesia None (sedation sometimes used for imaging) General, usually brief General, longer
Typical setting Clinic Day surgery in most cases Short hospital stay for open repair; varies for laparoscopic
Usually favored for Low grades, no fevers, young children Low to moderate grades, families wanting to avoid antibiotics High grades, breakthrough kidney infections, complex anatomy, failed injection
Main limitations Years of antibiotics and repeat x-ray studies; infections can still occur May need repeating; less durable in high grades Bigger operation, catheter, bladder spasms, longer recovery

Notice what the table does not contain: a “best” column. A family whose toddler has had three kidney infections reads it very differently from a family whose infant has low-grade reflux found on a prenatal scan. Both are reading correctly.

One more caution. The comparison describes the procedures, not the surgeon’s skill or a particular program. Outcomes in the literature are averages across many hands; your team can tell you how they approach each option and why they lean one way for your child.

Preparing a child for VUR surgery: the two weeks before

The countdown starts earlier than most parents expect. Somewhere in the weeks before the operation, the child will have a pre-anesthesia assessment, either in person or by phone. Treat it as the single most useful appointment of the whole process, because it is where fasting times, arrival times, and medicine instructions are set in writing.

Bring a complete list of everything the child takes: prescriptions, the preventive antibiotic if there is one, over-the-counter remedies, vitamins, and herbal products. Some of these need to continue and some may need to pause; that call belongs to the anesthesiologist and surgeon, never to a parent guessing from a leaflet. The same appointment is the moment to mention past reactions to anesthesia in the child or in close relatives, loose teeth, snoring, asthma, and any recent hospital visit.

Health in the run-up matters more than in ordinary life. A cold, a fever, a chest infection, or a fresh bout of vomiting in the days before surgery can lead the team to postpone, because inflamed airways behave unpredictably under anesthesia. Nobody can prevent every virus, but skipping the birthday party of a coughing classmate the weekend before is a reasonable trade.

Constipation deserves its own line. A full rectum presses on the bladder and worsens both reflux and post-operative bladder spasms, which is why the AUA guideline emphasizes bladder-and-bowel habits in every child with VUR. If your child struggles with hard or infrequent stools, raise it now so the team can advise; the fix chosen is theirs to make.

Finally, sort the logistics that will otherwise ambush you: time off work, a sibling’s care, a car seat that can accommodate a child with a sore lower abdomen, and a phone charger. Rehearsing these details is not fussing. It is what frees you to be calm on the day, and a calm parent is the most reliable comfort object a child has.

Fasting before anesthesia: why it matters and how to get through it

Fasting is the instruction parents most often ask to bend, and the one anesthesiologists least often will. The reason is mechanical. General anesthesia switches off the protective reflexes that keep stomach contents out of the lungs. If a child vomits while going to sleep or waking up, food or milk can be inhaled, and inhaled stomach contents can cause a serious pneumonia. An empty stomach removes most of that risk, which is why the team will confirm the last drink, down to the minute, before wheeling the child in.

Fasting instructions are staged rather than blanket. Solid food and any milk that is not breast milk are stopped earliest, because they leave the stomach slowly. Breast milk is allowed somewhat closer. Clear fluids, meaning liquids you can see through such as water or diluted apple juice without pulp, are usually permitted until the shortest window before anesthesia, because they pass through quickly. The exact hours come from your program in writing, and they override anything a friend, a website, or this article says. If the schedule shifts on the day, ask whether the fluid window has shifted too.

Getting a hungry child through the morning is a matter of choreography. Ask for an early operating slot if the child is very young; a toddler who wakes and goes straight to the hospital fasts far less than one who watches breakfast disappear. Clear the kitchen counters and let siblings eat elsewhere. Offer the last permitted clear drink as a small ritual, then move straight into distraction: a walk, a new book, a screen if that is what works. Toothbrushing is fine as long as nothing is swallowed.

Do not skip the fasting rules and stay quiet about it. Surgeons would far rather delay a case than discover a stomach full of cereal on the table. Honesty here is a safety behavior, not an admission of failure.

What to explain, age by age: scripts that work

Children handle what they can picture and fear what they cannot. The aim is to give them a true picture sized to their age, without dumping the adult version on them.

Under three. Explanations should come on the day itself, in a sentence or two, focused on sensations and on you. “We’re going to a hospital. You’ll have a special mask, then a big sleep, and when you wake up I’ll be right there.” Repetition and a familiar object matter more than detail.

Three to six. Start a day or two ahead. Preschoolers are literal, so choose words carefully. Avoid “put to sleep” if a family pet has ever been described that way; say “sleepy medicine” instead. Explain that the doctor is going to help the tube from the kidney work better so germs cannot climb up. Medical play, using a toy stethoscope or a doll with a bandage, lets them rehearse control. Many hospitals have child life specialists, professionals trained to prepare children for procedures; ask whether one is available.

Seven to twelve. Give about a week, and be honest that there will be a sore tummy and possibly a tube to drain pee. School-age children want to know their role: “Your job is to breathe slowly with the mask and tell us when something hurts.” They also want to know they did nothing to cause the reflux, because kids this age quietly assume they did.

Teenagers. Involve them in the decision itself. Cover privacy, the catheter conversation frankly, what clothing to bring, and how school will be handled. Offer time alone with the surgeon if they want it.

Across every age, one rule holds: never promise “it won’t hurt at all.” Promise instead that pain will be watched for and treated, and that you will be told the truth. A child who catches one lie stops trusting all the reassurances that follow.

Comfort planning: the bag, the blanket, and the plan for you

Comfort is not soft stuff bolted onto the medical plan; distress before anesthesia is linked to rougher wake-ups, so the team will care about it too.

Pack for the child first. One comfort object, whether a blanket, stuffed animal, or pacifier, and check at the pre-op visit whether it can go into the operating room. Many programs allow it right up to induction, the moment the child falls asleep, and hand it back in recovery. Add loose, soft clothing with an easy waistband for the trip home, since the lower abdomen or the urethra may be tender. A tablet with headphones and downloaded content is worth more than any toy because it works in a fasting waiting room, a pre-op bay, and a hospital bed.

Pack for yourself second. Snacks you can eat discreetly out of the child’s sight, a charger, the folder of paperwork, a list of your questions, and the name of the person to call if the hospital’s plans change. If the child is staying overnight, one adult usually stays; agree in advance who, and how you will swap.

Ask about parental presence at induction. Some programs invite a parent to hold the child while the mask goes on; others prefer a premedication, meaning a calming medicine given before anesthesia, and a handover at the door. Neither approach is a judgment on you. Ask which your team uses and why, and then commit to it, because a parent who is visibly torn at the door transmits that tension straight to the child.

Plan your own calm deliberately. Eat breakfast before you leave. Decide what you will do during the operation, whether that is a walk, a call to a friend, or a book. Children read a parent’s face faster than any leaflet, and the steadiest thing you can hand them is your own composure, borrowed if necessary.

What happens on the day of VUR surgery, step by step

Hospitals vary in detail, but the shape of the day is remarkably consistent, and knowing the shape lowers the dread.

Arrival comes early, often well before the scheduled operating time, because several teams need to see the child in turn. A nurse checks weight, temperature, and the last drink, then fits an identity band and a gown. The surgeon confirms the plan and the side being operated on, and you sign or re-confirm consent. The anesthesiologist reviews the child’s health, asks about loose teeth and recent coughs, and describes how the child will go to sleep: for most young children that is a mask with a sweet-smelling gas, sometimes after a calming medicine; for older children or teens an intravenous line may be placed first, often with a numbing cream applied beforehand. Which route is used is the anesthesiologist’s decision.

Then comes the handover. Whether at the bedside or in the operating room, it takes seconds, and the child is asleep quickly. You will be shown where to wait and told roughly how long to expect; an endoscopic injection is short, while reimplantation takes longer, and time in the operating room includes anesthesia and set-up as well as the operation itself.

Recovery is the part parents are least prepared for. Young children often wake confused, crying, or thrashing for a short spell, a well-recognized effect of anesthesia rather than a sign of pain or of anything going wrong. A sore throat from the breathing tube is common. There may be a catheter, a small bag of pink-tinged urine, and an intravenous line still in place. Nurses will be checking pain, temperature, and urine flow closely, and you will be brought in as soon as the child is stable. Bring the comfort object. Whatever you rehearsed at home is what the child reaches for now.

VUR surgery recovery time: what the following days and weeks look like

Recovery differs sharply between the two procedures, so ask which pathway applies before you picture the week.

After endoscopic injection, Mayo Clinic describes most children going home the same day. Expect mild stinging when peeing and a pink tinge to the urine for a day or two, both of which usually fade quickly. Ordinary play generally resumes within days, and school within a similar window, on the team’s say-so.

After ureteral reimplantation the picture is fuller. Mayo Clinic notes that open surgery usually involves a hospital stay of a few days, during which the child has a catheter draining the bladder and sometimes small internal tubes called stents keeping the repaired ureters open. Bladder spasms, sudden cramping pains as the healing bladder squeezes against the catheter, are the symptom parents find hardest to watch; the team anticipates them and has a plan for relief that they will explain. Pain is managed with medicines chosen and scheduled by the treating team; parents should never adjust these on their own.

At home, the incision should be kept clean and dry until the team clears bathing, and strenuous play, bike riding, and contact sports are typically held back for a period the surgeon will specify. Urine may stay faintly pink for several days. Appetite and energy return gradually rather than overnight.

Follow-up is where the operation is judged. An ultrasound is usually scheduled in the months after surgery to check that urine is draining from the kidneys and nothing is blocked; some programs repeat the bladder x-ray study to confirm the reflux has stopped, while others rely on ultrasound plus the absence of kidney infections, a strategy the AUA guideline allows. Any preventive antibiotic the child was taking is continued or stopped only when the treating team decides, typically after that imaging.

Can VUR cause kidney disease? What the evidence actually shows

This is the question underneath every other question, so it deserves a direct answer. Reflux by itself, clean urine washing backward, does not appear to damage a healthy kidney. The harm comes when infected urine reaches the kidney and triggers a kidney infection, called pyelonephritis, and the child is young enough that the inflamed tissue heals as a scar rather than as normal kidney. Scarring of this kind is sometimes called reflux nephropathy. Its likelihood rises with the reflux grade and with the number of febrile infections a child has had, according to the National Institute of Diabetes and Digestive and Kidney Diseases.

Scars matter for two reasons. A scarred area no longer filters, and extensive scarring across both kidneys can, over years, reduce overall kidney function. Scarred kidneys can also drive up blood pressure, which is why children with known scarring are often followed with blood pressure checks into adolescence. Most children with VUR never reach either outcome; the majority, particularly those with lower grades and few infections, grow up with kidneys that work normally.

Two honest limits to the evidence should shape expectations. First, the large randomized RIVUR trial published in the New England Journal of Medicine found that preventive antibiotics roughly halved the recurrence of urinary infections in children with VUR but did not produce a measurable reduction in new kidney scarring over its two-year follow-up. Preventing infection is worthwhile in itself, but the link between fewer infections and less scarring is less tight than intuition suggests. Second, no operation restores scar tissue. Surgery protects against future kidney infections; it does not repair the past.

What this means for a family is grounding rather than alarm. Prompt attention to any fever, good bladder-and-bowel habits, and keeping follow-up appointments do more for kidney health than any amount of worry. The decision about surgery sits within that larger picture, and your team will place it there.

What is the success rate of vesicoureteral reflux surgery, and what does "success" mean?

Parents ask for a number and deserve one, with its context attached. The AUA guideline summary (Peters and colleagues, Journal of Urology), drawing on a meta-analysis of published series, reported that open ureteral reimplantation stopped reflux in roughly 98 percent of ureters, while endoscopic injection stopped it in about 83 percent of ureters after a single injection, with the figure rising when a second injection was performed. These are pooled averages from many centers and many years, not a promise for any one child, and results for higher-grade reflux and for unusual anatomy are lower than the headline figures.

The word doing the work in those numbers is “stopped reflux.” Success in the literature means the bladder x-ray study no longer shows urine flowing backward. That is the goal of the operation, but it is not the same as the goal of the parent, which is a child who does not get sick. The two overlap without being identical. A child whose reflux has been corrected can still develop ordinary bladder infections, especially a girl, a child with constipation, or a child who holds urine for long stretches; what the operation changes is the probability that such an infection climbs to the kidney.

Complications are uncommon but real, and neutral language serves families better than reassurance. After reimplantation they include temporary difficulty passing urine, blockage at the new tunnel that occasionally needs a further procedure, persistent reflux, bleeding, and infection. After injection they include short-lived pain, a small chance of the gel shifting, and the possibility that reflux returns over time. General anesthesia carries its own small risks, which the anesthesiologist will review.

A reasonable way to hold all this: the operations are well established and reliable at what they are designed to do, and the honest measure of success for your child will be written over the following years in follow-up imaging and in fevers that do not come.

What people often get wrong about VUR surgery

Myths cluster around this operation, partly because the anatomy is invisible and partly because old advice lingers online. Six corrections are worth making plainly.

“Surgery means no more urinary infections.” Surgery blocks the route from bladder to kidney; it does not sterilize the bladder. Bladder infections can still happen, and they should still be treated promptly.

“Reflux was caused by something we did.” Primary VUR is present at birth and often runs in families; it is not caused by potty training, diapers, bathing habits, or how much a child drinks. Constipation and holding habits can worsen it, which is different from causing it.

“Every child with VUR needs an operation.” Many low-grade cases resolve as the child grows, and the AUA guideline treats observation as a mainstream option, not a delay tactic.

“Fasting means nothing after bedtime.” Modern instructions are staged, and clear fluids are usually allowed far closer to anesthesia than solids. Following the written times, not a blanket midnight rule, keeps a child both safe and less miserable.

“If the ultrasound looks fine, we can skip follow-up.” Ultrasound shows kidney size and drainage; it does not show reflux directly, and it cannot confirm the operation worked. Follow-up imaging and appointments are part of the treatment, not an optional extra.

“Kids wake up from anesthesia calm and grateful.” Many small children wake confused and inconsolable for a short stretch. It looks alarming and is usually harmless. Knowing this in advance is the difference between a frightening recovery-room memory and a manageable one.

One more, gentler correction. Parents sometimes believe they must choose between “doing something” and “doing nothing.” Watchful waiting with attentive follow-up is very much doing something; it is simply the version that keeps the child out of an operating room while the odds are still on their side.

Questions to ask your care team before the operation

A surgical consultation moves fast and answers evaporate on the drive home. Writing questions down beforehand, and bringing a second adult to take notes, changes the quality of the conversation. These are the ones that tend to matter most to families preparing a child for VUR surgery.

  • Which procedure are you recommending for my child, and what about the grade, age, or anatomy points you toward it rather than the alternative?
  • What would happen if we chose to keep waiting instead, and what signs would make you want to revisit that?
  • What are the exact fasting times for solids, milk, breast milk, and clear fluids, and who do we call if the schedule changes?
  • Which of my child’s regular medicines, including the preventive antibiotic, should continue, pause, or change before surgery?
  • Can a parent be present when my child goes to sleep, and can the comfort object come into the operating room?
  • Will there be a catheter or stents, for how long, and how will bladder spasms and pain be handled?
  • How long do you expect the hospital stay to be, and what activity limits apply at home?
  • What imaging will follow the operation, when, and how will we know whether the reflux has stopped?
  • What symptoms in the first two weeks should prompt a call, and what number do we use after hours?
  • How often do you see the main complications of this procedure, and how are they managed?

Notice that the list deliberately avoids “is this the right choice?” That question has no universal answer, and a good team will not pretend otherwise. What they can give you is their reasoning, laid out clearly enough that you could explain it to a relative. When you can do that, you are ready to decide, and the decision, made jointly, remains theirs to carry out.

When to call your doctor: red-flag signs after VUR surgery

Most recoveries are uneventful, but the team wants to hear about certain changes early, because after bladder surgery small problems are far easier to fix small. Keep the after-hours number on the fridge and use it without apology.

Call the surgical team the same day if your child develops a fever, since a temperature after urinary surgery can signal a kidney or wound infection; if there is vomiting that stops the child keeping fluids down; if pain is not controlled by the plan the team gave you; if the urine turns deep red or contains clots rather than a pink tinge; if the incision becomes red, swollen, hot, or leaks pus; or if a catheter stops draining or falls out.

Call urgently, or use emergency services, if your child has not passed urine for longer than the window the team specified, is unusually drowsy or hard to rouse, has trouble breathing, develops a spreading rash, or seems suddenly very unwell in a way you cannot name. Trust that instinct; parents recognize “not right” in their own child faster than any checklist.

In the longer term, a fever without an obvious cause in the months and years after surgery still deserves prompt attention and a urine test, because the goal of the operation was to keep infections out of the kidneys and the only way to know is to check. Flank pain, meaning pain in the side of the back below the ribs, or a return of the pattern of infections that led to surgery, should also be reported so the team can decide whether imaging is needed.

None of this should read as a forecast. It is the map of what to watch, handed over so you can stop watching everything.

Frequently asked questions

Do kids outgrow VUR, and can you outgrow kidney reflux completely?

Many children do, especially those with lower grades. As a child grows, the section of ureter running through the bladder wall lengthens and the flap valve becomes more effective, so grades I to III often resolve during early childhood according to Mayo Clinic and the NIDDK. Higher grades resolve less often and more slowly. Your team tracks this with periodic imaging and will say when waiting is no longer serving your child.

What is the success rate of vesicoureteral reflux surgery?

The AUA guideline summary reports that open ureteral reimplantation stopped reflux in roughly 98 percent of ureters and endoscopic injection in about 83 percent after one injection, higher with a repeat. These are pooled averages from many centers, lower for high-grade or complex cases, and they measure whether reflux disappears on imaging, not whether a child never has another bladder infection. Ask your surgeon how these figures apply to your child.

Can VUR cause kidney disease later in life?

It can, but usually only indirectly. Reflux itself does not damage a kidney; infected urine reaching the kidney during a febrile infection can leave a scar, and extensive scarring may raise blood pressure or, uncommonly, reduce kidney function over time. Risk rises with reflux grade and the number of kidney infections. Most children with VUR, particularly lower grades, grow up with normally functioning kidneys, per the NIDDK.

How long does VUR surgery recovery time usually take?

It depends on the procedure. Mayo Clinic describes endoscopic injection as usually a same-day procedure, with mild stinging and pink urine that settles within days. Open ureteral reimplantation typically involves a hospital stay of a few days with a catheter, followed by activity limits at home for a period the surgeon sets. Full return to sports and rough play is cleared at follow-up rather than on a fixed calendar.

Why does my child have to fast before anesthesia, and can they have water?

Anesthesia switches off the reflexes that keep stomach contents out of the lungs, so an empty stomach protects against inhaling food or milk during induction or waking. Fasting is staged: solids and formula stop earliest, breast milk somewhat later, and clear fluids such as water are usually allowed closest to surgery. Your program’s written times are the ones to follow, and you should tell the team honestly about any slip.

What should I tell a preschooler about VUR surgery?

Keep it short, true, and focused on sensations and your presence. Explain a day or two ahead that the doctor will help the tube from the kidney work better so germs cannot climb up, that there will be a special mask and sleepy medicine, and that you will be there when they wake. Avoid the phrase put to sleep if a pet has ever been described that way. Medical play with a doll helps them rehearse.

Can I stay with my child when they go under anesthesia?

Policies vary. Some programs invite a parent to hold the child while the mask is applied; others give a calming premedication and hand the child over at the operating room door. Neither is a judgment on you, and both aim for the smoothest possible induction. Ask at the pre-anesthesia visit which approach your team uses, whether a comfort object can go in, and how quickly you will be brought to recovery.

Will my child still get urinary tract infections after VUR surgery?

Possibly. The operation closes the route from bladder to kidney; it does not stop bacteria from entering the bladder. Ordinary bladder infections can still occur, particularly in girls, children with constipation, or children who hold urine for long periods. What surgery changes is the likelihood that an infection climbs to the kidney. Any fever after surgery still warrants a prompt urine test arranged by your child’s doctor.

What are bladder spasms after ureteral reimplantation?

They are sudden, cramping pains that happen when the healing bladder muscle squeezes against the catheter or the fresh repair. They are common after open reimplantation, tend to come in waves, and settle as the bladder calms and the catheter is removed. The surgical team expects them and has a relief plan they will explain; keeping stools soft also helps, since a full rectum presses on the bladder.

Does my child need to keep taking the preventive antibiotic after surgery?

Often for a while, but only your treating team can decide. Many programs continue the preventive antibiotic until follow-up imaging, usually an ultrasound and sometimes a repeat bladder x-ray study, confirms that urine is draining well and reflux has stopped. The timing of that imaging and the decision to stop the medicine belong to the surgeon and pediatrician, not to a fixed rule, so ask what the plan is before discharge.

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.

Dr. Şule Eren
Dr. Şule Eren, MD
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Published October 17, 2026 Last updated September 19, 2026
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