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Previous Volume 348:195-202 January 16, 2003 Number 3 Next

	Full Text PDF PDA Full Text PowerPoint Slide Set Editorial by Stapleton, F. B. Letters Add to Personal Archive Add to Citation Manager Notify a Friend E-mail When Cited PubMed Citation

ABSTRACT

Background Guidelines from the American Academy of Pediatrics recommend obtaining a voiding cystourethrogram and a renal ultrasonogram for young children after a first urinary tract infection; renal scanning with technetium-99m–labeled dimercaptosuccinic acid has also been endorsed by other authorities. We investigated whether imaging studies altered management or improved outcomes in young children with a first febrile urinary tract infection.

Methods In a prospective trial involving 309 children (1 to 24 months old), an ultrasonogram and an initial renal scan were obtained within 72 hours after diagnosis, contrast voiding cystourethrography was performed one month later, and renal scanning was repeated six months later.

Results The ultrasonographic results were normal in 88 percent of the children (272 of 309); the identified abnormalities did not modify management. Acute pyelonephritis was diagnosed in 61 percent of the children (190 of 309). Thirty-nine percent of the children who underwent cystourethrography (117 of 302) had vesicoureteral reflux; 96 percent of these children (112 of 117) had grade I, II, or III vesicoureteral reflux. Repeated scans were obtained for 89 percent of the children (275 of 309); renal scarring was noted in 9.5 percent of these children (26 of 275).

Conclusions An ultrasonogram performed at the time of acute illness is of limited value. A voiding cystourethrogram for the identification of reflux is useful only if antimicrobial prophylaxis is effective in reducing reinfections and renal scarring. Renal scans obtained at presentation identify children with acute pyelonephritis, and scans obtained six months later identify those with renal scarring. The routine performance of urinalysis, urine culture, or both during subsequent febrile illnesses in all children with a previous febrile urinary tract infection will probably obviate the need to obtain either early or late scans.

Source Information

From the Departments of Pediatrics (A.H., R.W.H., E.R.W.) and Radiology (M.C.), University of Pittsburgh School of Medicine and Children's Hospital of Pittsburgh, Pittsburgh; the Department of Pediatrics, Ohio State University and Columbus Children's Hospital, Columbus (R.W.H.); the Department of Pediatrics, Harvard Medical School and Children's Hospital, Boston (M.B.); and the Division of General Academic Pediatrics, Children's Hospital of Pittsburgh, Pittsburgh (D.H.K.).

Address reprint requests to Dr. Hoberman at Children's Hospital of Pittsburgh, 3705 5th Ave., Pittsburgh, PA 15213-2583, or at hoberman{at}chp.edu.

Full Text of this Article

Related Letters:

Imaging Studies after a First Febrile Urinary Tract Infection in Young Children
Nishisaki A., Gordon I., Kallen R., Hoberman A., Hickey R. W., Wald E. R.
Extract | Full Text | PDF  
N Engl J Med 2003; 348:1812-1814, May 1, 2003. Correspondence

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