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What is vesicoureteral reflux (VUR)?
VUR is the result of abnormal formation of the normal valve between the kidney and bladder. This valve ensures that urine travels one way from the kidney to the bladder. In children with VUR, this valve does not work correctly.
What causes vesicoureteral reflux?
The cause is unknown. However, many children with VUR have certain characteristics in common:
What are the symptoms of vesicoureteral reflux?
Children who have VUR may not feel sick because VUR typically does not present symptoms. VUR is most often diagnosed after a child has had multiple urinary tract infections (UTI) accompanied with a fever. Some children are also diagnosed shortly after birth if they had hydronephrosis (fluid in the kidneys) and the condition was seen on their prenatal (before birth) ultrasounds.
Common symptoms of UTI in children include:
Commonly asked questions about VUR:
Q: Can vesicoureteral reflux (VUR) be prevented?
A: No. However, the urinary tract infections that are often associated with VUR can be prevented with changes to toileting behaviors, management of constipation and preventive antibiotics.
Q: Is VUR inherited?
A: Yes, VUR is more common in family members of people with VUR. For this reason, you should discuss with your doctor whether siblings or other family members should be tested for VUR.
Q: Is surgery mandatory?
A: Many children with VUR will outgrow their VUR on their own. Therefore, we do not perform surgery as initial treatment in most children. Some children, however, will require surgery to correct VUR eventually. The most common reasons for surgical correction of VUR are repeated UTI with kidney involvement, failure of VUR to resolve on its own over time, or severe VUR that is very unlikely to resolve.
Q: Are antibiotics safe to take for a long time?
A: Yes. The preventive antibiotics used are given once-a-day and are very low dose. There are some risks associated with any medication, but we believe that the benefits of preventing UTI (and kidney scarring) in children with VUR outweigh any small risks associated with taking the antibiotics for long periods. We have treated thousands of children with preventive antibiotics for many years with very few severe side effects.
Q: Don’t children become “immune” to the antibiotics?
A: Children do not become “immune” to antibiotics. Their immune systems (the germ-fighting and infection-fighting systems) remain fully functional and aren’t altered by being on these medications. Children can still fight off infections normally. However, the bacteria (germs) living on and inside of human beings can become resistant to certain antibiotics through chronic, or ongoing exposure.
This problem is minimized by properly selecting the best antibiotic medicines for UTI prevention, using a very low dose, and giving it only once a day. Resistance to antibiotics is a major concern in health care and is being studied carefully.
Q: If my child has VUR, what type of follow up is needed?
A: Children with VUR are usually followed until their reflux goes away or is surgically corrected. Most children are seen every six to 12 months. Your doctor will often use ultrasound to follow your child’s kidney growth and health. We perform special tests to check for VUR every one to two years. In some cases, VUR can result in scarring in the kidney, which can lead to high blood pressure. Children with scars in their kidneys should have their blood pressure and urine checked every six months, even if their VUR has gone away.
We are grateful to have been ranked #1 on U.S. News & World Report's list of the best children's hospitals in the nation for the third year in a row, an honor we could not have achieved without the patients and families who inspire us to do our very best for them. Thanks to you, Boston Children's is a place where we can write the greatest children's stories ever told.”