Abstract
Vesico-ureteral reflux (VUR) has long been recognized as associated with urinary tract infections (UTIs), renal scarring, and chronic kidney disease (CKD). The concept of “reflux nephropathy” was born, whereby the VUR was considered the culprit, predisposing to recurrent UTIs and providing a conduit whereby the infection could ascend to the kidneys resulting in scarring and destruction. The more severe grades of reflux were thought to place the young child at particular risk of CKD. The question being asked in this pro/con debate is whether VUR is indeed the culprit responsible for a significant proportion of children with CKD, a number of whom progress to end-stage kidney failure (ESKF), and is thus important to find and treat, or is it an innocent bystander associated with CKD and ESKF but not the cause. We believe the latter and will present convincing evidence supported by large scale prospective randomized controlled trials that VUR is not the ogre it was thought to be and is not important to find following a UTI (with some exceptions).



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La Scola C, De Mutiis C, Hewitt IK, Puccio G, Toffolo A, Zucchetta P, Mencarelli F, Marsciani M, Dall’Amico R, Montini G (2013) Different guidelines for imaging after first UTI in febrile infants: yield, cost, and radiation. Pediatrics. 131(3):e665–e671
Sinha R, Saha S, Maji B, Tse Y (2018) Antibiotics for performing voiding cystourethrogram: a randomised control trial. Arch Dis Child 103(3):230–234
Subcommittee on Urinary Tract Infection, Steering Committee on Quality Improvement and Management, Roberts KB (2011) Urinary tract infection: clinical practice guideline for the diagnosis and management of the initial UTI in febrile infants and children 2 to 24 months. Pediatrics 128(3):595–610
Montini G, Tullus K, Hewitt I (2011) Febrile urinary tract infections in children. N Engl J Med 365(3):239–250
Bailey RR (1973) The relationship of vesicoureteric reflux to urinary tract infection and chronic pyelonephritis-reflux nephropathy. Clin Nephrol 1:132–141
Demède D, Mouriquand P (2015) The Vesicoureteric maze: the reasons of misunderstanding. In: Lima M, Manzoni G (eds) . Pediatric Urology Springer, Milano
Ardissino G, Avolio L, Dacco V, Testa S, Marra G, Viganò S, Loi S, Caione P, De Castro R, De Pascale S, Marras E, Riccipetitoni G, Selvaggio G, Pedotti P, Claris-Appiani A, Ciofani A, Dello Strologo L, Lama G, Montini G, Verrina E, ItalKid Project (2004) Long-term outcome of vesicoureteral reflux associated chronic renal failure in children. Data from the ItalKid Project. J Urol 172(1):305–310
Ardissino G, Daccò V, Testa S, Bonaudo R, Claris-Appiani A, Taioli E, Marra G, Edefonti A, Sereni F (2003) Epidemiology of chronic renal failure in children: data from the ItalKid project. Pediatrics 111:e382–e387
Morello W, La Scola C, Alberici I, Montini G (2016) Acute pyelonephritis in children. Pediatr Nephrol 3:1253–1265
Jodal U, Smellie JM, Lax H, Hoyer PF (2006) Ten-year results of randomized treatment of children with severe vesicoureteral reflux: final report of the International Reflux Study in Children. Pediatr Nephrol 21:785–792
(1987) Prospective trial of operative versus non-operative treatment of vesicoureteric reflux in children: five years' observation BMJ 295(6592):237–241
Smellie JM, Barratt TM, Chantler C, Isky G (2001) Medical versus surgical treatment in children with severe bilateral vesicoureteric reflux and bilateral reflux nephropathy: a randomised controlled trial. Lancet 357:9265
Arant BS (2001) Vesicoureteral reflux and evidence-based management. J Pediatr 139:620–621
Montini G, Hewitt I (2009) Urinary tract infections: to prophylaxis or not to prophylaxis? Pediatr Nephrol 24(9):1605–1609
Garin EH, Olavarria F, Garcia NV, Valenciano B, Campos A, Young L (2006) Clinical significance of primary vesicoureteral reflux and urinary antibiotic prophylaxis after acute pyelonephritis: a multicenter, randomized, controlled study. Pediatrics 117(3):626–632
Montini G, Rigon L, Zucchetta P, Fregonese F, Toffolo A, Gobber D, Cecchin D, Pavanello L, Molinari PP, Maschio F, Zanchetta S, Cassar W, Casadio L, Crivellaro C, Fortunati P, Corsini A, Calderan A, Comacchio S, Tommasi L, Hewitt IK, Zacchello G, the IRIS Group (2008) Prophylaxis after first febrile urinary tract infection in children? A multicenter, randomized, controlled, noninferiority trial. Pediatrics 122(5):1064–1071
Pennesi M, Travan L, Peratoner L, Bordugo A, Cattaneo A, Ronfani L, Minisini S, Ventura A, North East Italy Prophylaxis in VUR study group (2008) Is antibiotic prophylaxis in children with vesicoureteral reflux effective in preventing pyelonephritis and renal scars? A randomized, controlled trial. Pediatrics 121(6):e1489–e1494
Craig JC, Simpson JM, Williams GJ, Lowe A, Reynolds GJ, McTaggart SJ, Hodson EM, Carapetis JR, Cranswick NE, Smith G, Irwig LM, Caldwell PH, Hamilton S, Roy LP (2009) Prevention of recurrent urinary tract infection in children with vesicoureteric reflux and normal renal tracts (PRIVENT) investigators. Antibiotic prophylaxis and recurrent urinary tract infection in children. N Engl J Med 361(18):1748–1759
Brandstrom P, Jodal U, Sillen U, Hansson S (2011) The Swedish reflux trial: review of a randomized, controlled trial in children with dilating vesicoureteral reflux. J Pediatr Urol 7(6):594–600
RIVUR Trial Investigators, Hoberman A, Greenfield SP, Mattoo TK, Keren R, Mathews R, Pohl HG, Kropp BP, Skoog SJ, Nelson CP, Moxey-Mims M, Chesney RW, Carpenter MA (2014) Antimicrobial prophylaxis for children with vesicoureteral reflux. N Engl J Med 370(25):2367–2376
Hari P, Hari S, Sinha A, Kumar R, Kapil A, Pandey RM, Bagga A (2015) Antibiotic prophylaxis in the management of vesicoureteric reflux: a randomized double-blind placebo-controlled trial. Pediatr Nephrol 30(3):479–486
Ingelfinger JR, Stapleton FB (2014) Antibiotic prophylaxis for vesicoureteral reflux--answers, yet questions. N Engl J Med 370(25):2440–2441
Hewitt IK; Pennesi M; Morello W; Ronfani L; Montini G. Antibiotic Prophylaxis for Urinary Tract Infection-Related Renal Scarring: A Systematic Review. Pediatrics. 139(5), 2017
National Institute for Health and Clinical Excellence (NICE). Clinical Guideline. Urinary tract infection under 16s: diagnosis and management. Published August 2007. Last updated: October 2018. https://www.nice.org.uk/guidance/cg54 Accessed January 8, 2019
AAP Subcommittee on Urinary Tract Infection. Reaffirmation of AAP clinical practice guideline: the diagnosis and management of the initial urinary tract infection in febrile infants and young children 2–24 months of age (2016) Pediatrics 138:e20163026
Ammenti A, Alberici I, Brugnara M, Chimenz R, Guarino S, La Manna A, La Scola C, Maringhini S, Marra G, Materassi M, Morello W, Nicolini G, Pennesi M, Pisanello L, Pugliese F, Scozzola F, Sica F, Toffolo A, Montini G, Italian Society of Pediatric Nephrology (2020) Updated Italian recommendations for the diagnosis, treatment and follow-up of the first febrile urinary tract infection in young children. Acta Paediatr 109(2):236–247
McTaggart S, Danchin M, Ditchfield M, Hewitt I, Kausman J, Kennedy S, Trnka P, Williams G, Kidney Health Australia - Caring for Australasians with Renal Impairment (2015) KHA-CARI guideline: diagnosis and treatment of urinary tract infection in children. Nephrology (Carlton) 20(2):55–60
Alberici I, La Manna A, Pennesi M, Starc M, Scozzola F, Nicolini G, Toffolo A, Marra G, Chimenz R, Sica F, Maringhini S, Monasta L, Montini G (2019) First urinary tract infections in children: the role of the risk factors proposed by the Italian recommendations. Acta Paediatr 108(3):544–550
Swerkersson S, Jodal U, Sixt R, Stokland E, Hansson S (2017) Urinary tract infection in small children: the evolution of renal damage over time. Pediatr Nephrol 32(10):1907–1913
Sillén U, Brandström P, Jodal U, Holmdahl G, Sandin A, Sjöberg I, Hansson S (2010) The Swedish reflux trial in children: v. bladder dysfunction. J Urol 184(1):298–304
Nordenström J, Sjöström S, Sillén U, Sixt R, Brandström P (2017) The Swedish infant high-grade reflux trial: UTI and renal damage. J Pediatr Urol 13(2):146–154
Loening-Baucke V (1997) Urinary incontinence and urinary tract infection and their resolution with treatment of chronic constipation of childhood. Pediatrics. 100:228–232
Toffolo A, Ammenti A, Montini G (2012) Long-term clinical consequences of urinary tract infections during childhood: a review. Acta Paediatr 101(10):1018–1031
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Hewitt, I., Montini, G. Vesicoureteral reflux is it important to find?. Pediatr Nephrol 36, 1011–1017 (2021). https://doi.org/10.1007/s00467-020-04573-9
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DOI: https://doi.org/10.1007/s00467-020-04573-9