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Original Article

Renal scarring following urinary tract infections in children.

Balakrishna Bandari,Seema Pavaman Sindgikar,Soma Santosh Kumar,Mangalpady Shenoy Vijaya,Raghu Shankar.


Urinary tract infection (UTI) is the most common bacterial infection seen in younger age group children. The most common risk factor for renal scarring in children with post-UTI is vesicoureteric reflux (VUR). This study looked at renal scarring following UTI in children by Dimercaptosuccinic acid (DMSA) scan. It is a cross-sectional time bound study done among 40 infants and children with UTI for a period of 18 months. Their clinical presentation and laboratory data including micturating cystourethrogram (MCUG) were documented. DMSA scan were done during the follow up, established the presence of renal scars if any. UTI was more common in males. Children with history of recurrent UTI had renal scarring. Statistical significance was noted when first and recurrent attacks of UTI were compared for clinical and diagnostic characteristics like E.coli UTI (p=0.007), increasing grades of VUR (p=0.006), and renal scar formation (p=0.041). The study concluded that high grades of antenatal hydroureteronephrosis (100%), febrile UTI (34%), younger age group (67.5%), E.coli UTI (86%) were more associated with recurrent attacks of UTI and renal scarring. DMSA, being the non-invasive test is better proven to be an investigation of choice than other invasive modalities for follow-up of children with recurrent attacks of UTI.

Key words: Renal scar; Dimercaptosuccinic acid scan; Escherichia coli; Hydroureteronephrosis; Vesicoureteric reflux.

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