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Childhood Kidney Diseases 2015;0(0): 0
Association of renal and bladder ultrasonography findings with urinary tract infection recurrence, high-grade vesicoureteral reflux, and renal scarring.
Received: June 16, 2015;  Accepted: July 16, 2015.
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This study investigated whether renal and bladder ultrasonography (RBUS) finding performed in children with the first incidence of febrile urinary tract infection (UTI) can predict UTI recurrence, high-grade vesicoureteral reflux (HGVUR), or acquired renal scarring (aRS). In all, 917 children who were admitted to our hospital from January 2001 to October 2010, owing to the first incidence of febrile UTI were enrolled in this study. All children underwent RBUS during admission. The mean follow-up was 7.9 months. UTI recurrence rates were calculated according to various clinical parameters. By using bivariate and multiple logistic regression analyses, we determined whether age, sex, abnormal RBUS findings, abnormal dimercaptosuccinic acid renal scan findings, or RBUS findings parameters were predictive of UTI recurrence, HGVUR, or aRS. On RBUS, hydronephrosis and congenital anomaly of the kidney and urinary tract significantly predicted UTI recurrence. A small kidney, hydroureter, hydronephrosis, cortical thinning, and increased parenchymal echogenicity significantly predicted HGVUR. However, their odds ratios (OR) are low compared to normal RBUS finding (recurrent UTI: OR 0.432 and 0.354 vs. 0.934, respectively, HGVUR: .019, 0.329, 0.126, 0.058, and 0.188 vs. 2.082, respectively). No RBUS findings significantly predicted aRS. Recurrent UTI, HGVUR, and abnormal RBUS finding significantly predicted aRS (OR of 4.80, 4.61, and 2.58, respectively). RBUS is not useful in prediction of UTI recurrence or HGVUR. However, RBUS is necessary to exclude severe congenital renal scarring, obstructive uropathy, and renal abscess at the first incidence of febrile UTI and is helpful in determining the need for subsequent clinical imaging.
Key words: Renal sonogram; Urinary tract infection recurrence; High-grade vesicoureteral reflux; Acquired renal scarring
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Association of Renal and Bladder Ultrasonography Findings with Urinary Tract Infection Recurrence, High-Grade Vesicoureteral Reflux, and Renal Scarring   2015 October;19(2)
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