Vesicoureteral reflux (VUR) is the backward flow of urine from the bladder into the kidneys. Normally, urine flows from the kidneys through the ureters to the bladder. The muscles of the bladder and ureters and the pressure of urine in the bladder prevent urine from flowing backward through the ureters.
Reflux causes an abnormal amount of urine to remain in the bladder, which makes it easier for bacteria to grow and reach the kidneys. Vesicoureteral reflux is present in about one-third of children with urinary tract infections (UTIs).1 It can lead to kidney damage and scarring.
Treatment of reflux depends on how bad the problem is.
Citations
- Tanagho EA, Nguyen HT (2008). Vesicoureteral reflux. In EA Tanagho, JW McAninch, eds., Smith's General Urology, 17th ed., pp. 179–192. New York: McGraw-Hill.
- Larcombe J (2010). Urinary tract infection in children, search date July 2009. Online version of BMJ Clinical Evidence: http://www.clinicalevidence.com.
Last Revised: March 10, 2011
Author: Healthwise Staff
Medical Review: Susan C. Kim, MD - Pediatrics & Avery L. Seifert, MD - Urology
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