J Korean Soc Pediatr Nephrol > Volume 1(1); 1997 > Article
J Korean Soc Pediatr Nephrol 1997;1(1): 46-52.
소아에서의 요로감염과 방광요관역류에 관한 고찰
임현석, 박창로, 고철우, 구자훈
1경북대학교 의과대학 소아과학교실
2경북대학교 의과대학 소아과학교실
3경북대학교 의과대학 소아과학교실
4경북대학교 의과대학 소아과학교실
Urinary Tract Infection and Vesicoureteral Reflux in Children
Hyun-Suk Lim, Chang-Ro Park, Cheol-Woo Ko, Ja-Hoon Koo
1Department of Pediatrics, Kyungpook National University, School of Medicine
2Department of Pediatrics, Kyungpook National University, School of Medicine
3Department of Pediatrics, Kyungpook National University, School of Medicine
4Department of Pediatrics, Kyungpook National University, School of Medicine
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Urinary tract infection (UTI) in children has been known to be a cause of renal damage, leading to scar formation, hypertension and renal failure. And vesico-ureteral reflex (VUR), frequently accompanying UTI in young children, has been incriminated as the main factor causing scar formation. This retrospective study has been undertaken to see the relationship among UTI, VUR and renal scar formation. Study population consisted of 291 children (boy 134, girl 42) with UTI, who have been admitted to the Pediatric Department of Kyungpook University Hospital during 6 1/2 year period from January 1990 to June 1996. VUR was diagnosed by VCUG and renal scar by ultrasonogram, DMSA scan (or DMSA SPECT) and IVP. The following result were obtained. Sexual difference showed male predominance (male to female, 134:42) below 1 year of age, and female predominance (male to female, 11:35) over 5 years of age were rioted. VUR has been found in 64 children (22%) and the degree of reflux, classfied by the method proposed by 'International Reflux Study in Children', were as follows ; Grade I : 4.0%, Grade II : 3.0%, Grade III : 2.7%, Grade IV : 5.8% and Grade V : 6.2%. There was no sexual difference E.coli was the most predominant infecting agent occurring in 167 children (57%), and end-stage renal failure was diagnosed at the time of first admission in 5 children with Grade V VUR. Renal scar has been noted in 49 out of 582 kidneys (8.4%), and the incidence of scar foramation according to the degree of VUR were as follow ; Grade 0 (No reflux) : 1.2%, Grade I : 6.7%, Grade II 27.3%, Grade III 29.4%, Grade IV : 57.1%, and Grade V : 100%. In summary, present study shows that renal scar formation in UTI has close correlation with the severity of VUR occurring more frequently in severe reflux, so that early diagnosis and proper treatment of UTI and VUR is of paramount importance in preventing renal damage in children with UTI.
Key words: UTI | VUR | Renal scar

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