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1.
Peru H Bakkaloglu SA Soylemezoglu O Buyan N Hasanoglu E 《International urology and nephrology》2009,41(4):947-951
Early determination of renal scar development risk in children following first urinary tract infection (UTI) and early detection
and treatment of vesicoureteral reflux (VUR) are important to prevent renal functional impairment. The aim of this study was
to determine the prevalence of VUR and associated renal scar formation, in children who had acute pyelonephritis (APN), first
afebrile UTI, and recurrent afebrile UTIs. Patient records of 642 children having UTI were scrutinized and 278 out of 642
were enrolled in this study. The patients were divided into three groups: Group 1, patients with APN (n = 73); Group 2, patients with the first afebrile UTI (n = 88); and group 3, patients with recurrent afebrile UTIs (n = 117). Among these groups, VUR prevalence did not differ significantly (group 1: 24.6%, group 2: 22.7%, and group 3: 26.4%.
Renal scarring was detected in 19.3% of the patients and was remarkably lower in group 2 when compared with the other two
groups (P < 0.05). Renal scarring was found in 37.1% of the patients with VUR, whereas it was found in 14.3% of patients without VUR.
Renal scarring incidence was remarkably higher in patients with grades 4–5 VUR (61.5%) compared with those with grades 1–3
VUR (30.6%) (P = 0.055). In conclusion, since VUR was demonstrated in as many as one-quarter of patients with the first afebrile UTI and
VUR incidence did not differ significantly among the groups, all UTIs, lower and upper ones, should be carefully evaluated. 相似文献
2.
Annukka Hannula Mika Venhola Marjo Renko Tytti Pokka Niilo-Pekka Huttunen Matti Uhari 《Pediatric nephrology (Berlin, Germany)》2010,25(8):1463-1469
The aim of this study was to estimate the prevalence of vesicoureteral reflux (VUR) and clinically significant ultrasonography
(US) abnormalities in a large group of children with proven and suspected urinary tract infection (UTI). The medical reports
on renal US and voiding cystouretrographies (VCUG) of 2,036 children were reviewed. Renal US was performed on all children
and VCUG on 1,185 children (58%). Based on the urine culture data, the UTI diagnoses were classified into five reliability
classes (proven, likely, unlikely, false and no microbial data). The UTI diagnose was considered proven in 583/2036 (28.6%)
and false in 145 (7.1%) cases. The prevalence of VUR was similar among those with proven and false UTI [37.4 vs. 34.8%; relative
risk (RR) 1.08, 95% confidence intervals (95% CI) 0.7–1.7, P = 0.75] and decreased with increasing age (P = 0.001). Clinically significant US abnormalities occurred in 87/583 (14.9%) cases with proven UTI and significantly less
often (11/145, 7.6%) in the false UTI class (RR 1.96, 95% CI 1.1–3.6, P = 0.02). Our finding supports the claim that VUR is not significantly associated to UTI and that its occurrence among children
even without UTI is significantly higher than traditional estimates. This challenges the recommendations of routine VCUG after
UTI. 相似文献
3.
Hyeyoung Lee Yong Seung Lee Young Jae Im Sang Won Han 《Translational andrology and urology》2012,1(3):153-159
The relationship between vesicoureteral reflux and bladder dysfunction is inseparable and has long been emphasized. However, the primary concern of all physicians treating patients with vesicoureteral reflux is the prevention of renal scarring and eventual deterioration of renal function.Bladder dysfunction, urinary tract infection and vesicoureteral reflux are the three important factors which are closely related to each other and contribute to the formation of renal scar. Especially, there is ongoing discussion regarding the role of bladder dysfunction in the prognosis of both medically and surgically treated vesicoureteral reflux. The effect of bladder dysfunction on VUR is mostly via inadequate sphincter relaxation during infancy which is closer to immature bladder dyscoordination rather than true dysfunction. But after toilet training, functional obstruction caused by voluntary sphincter constriction during voiding is responsible through elevation in bladder pressure, thus distorting the architecture of bladder and ureterovesical junction. Reports suggest that voiding phase abnormalities in lower urinary tract dysfunction contributes to lower spontaneous resolution rate of VUR. However, filling phase abnormalities such as involuntary detrusor contraction can also cause VUR even in the absence of dysfunctional voiding. With regards to the effect of bladder dysfunction on treatment, meta-analysis reveals that the cure rate of VUR following endoscopic treatment is less in children with bladder bowel dysfunction but there is no difference for open surgery.The pathophysiology of bladder dysfunction associated with UTI can be explained by the ‘milk-back’ of contaminated urine back into the bladder and significant residual urine resulting from functional outlet obstruction. In addition, involuntary detrusor contraction can decrease perfusion of the bladder mucosa thus decreasing mucosal immunity and creating a condition prone to UTI. In terms of renal scarring, dysfunctional voiding seems to be more closely related to renal damage in association with VUR than overactive bladder. However, studies show that UTI can induce renal scarring even without VUR present and urodynamic abnormalities are quite often detected in these cases. Whether reflux of sterile urine in bladder dysfunction can cause significant renal scarring, especially when intrarenal reflux is present remains controversial. Another issue that warrants further research is the direct relationship between bladder dysfunction and renal scarring, since some reports suggest that these two conditions share a common genotype.Recently some studies have suggest VUR as a causal factor of bladder dysfunction, supported by the fact that bladder dysfunction resolves after injection therapy of VUR. Further study with more objective evaluation of bladder dysfunction may be needed. 相似文献
4.
Probiotics, beneficial living microorganisms, have been proven to be effective in preventing gastrointestinal infections,
but their effect in preventing urinary tract infection (UTI) is inconclusive. A prospective randomized controlled study was
done to compare the preventive effect of probiotics with conventional antibiotics in children with persistent primary vesicoureteral
reflux (VUR). One hundred twenty children who had had persistent primary VUR after antibiotic prophylaxis for 1 year were
randomly allocated into a probiotics (Lactobacillus acidophilus 108 CFU/g 1 g b.i.d., n = 60) or an antibiotics (trimethoprim/sulfamethoxazole 2/10 mg/kg h.s., n = 60) prophylaxis group during the second year of follow-up. The incidence of recurrent UTI was 18.3% (11/60) in the probiotics
group, which was not different from 21.6%(13/60) in the antibiotic group (P = 0.926). The causative organisms of recurrent UTI were not significantly different between the two groups (P = 0.938). Even after stratification by VUR grade, age, gender, phimosis, voiding dysfunction and renal scar, the incidence
of recurrent UTI did not differ significantly between the two groups (P > 0.05). The development of new renal scar was not significantly different between the two groups (P > 0.05). In conclusion, probiotics prophylaxis was as effective as antibiotic prophylaxis in children with persistent primary
VUR. 相似文献
5.
Eleni Sekerli Dimitrios Katsanidis Norma Vavatsi Areti Makedou Magdalini Gatzola 《Pediatric nephrology (Berlin, Germany)》2009,24(10):1975-1980
Urinary tract infection is a common bacterial disease that presents during childhood and may lead to renal scarring. Several
studies have shown a strong association between the angiotensin converting enzyme (ACE) deletion polymorphism and renal scarring
in children with vesicoureteric reflux (VUR). The purpose of this study was to investigate the possible correlation between
the ACE deletion polymorphism and renal scarring in 186 children with urinary tract infection (UTI), of whom 90 were renal
scar positive and 96 were renal scar negative. The control group consisted of 129 children with no UTI. Renal scars were diagnosed
by means of 99mTc-dimercapto-succinic acid scans, and ACE genotypes were determined as II, ID, and DD by PCR analyses. The ACE genotype distribution
was 10% II, 67% ID, and 23% DD in the renal scar-positive group, 18% ΙΙ, 42% ID, and 40% DD in the renal scar-negative group,
and 22% II, 47% ID, and 31% DD in the control group. No correlation was found between the DD genotype and renal scar formation
in children with UTI. The same results were obtained following strafication of the patients by VUR and age of the first urinary
tract infection. In conclusion, the results of this study suggest that the DD genotype is not an independent risk factor for
renal scarring in children with UTI. 相似文献
6.
Yim HE Choi BM Rhie YJ Yoo KH Hong YS Lee JW 《Pediatric nephrology (Berlin, Germany)》2011,26(3):425-431
One of the major goals in investigating children with urinary tract infection (UTI) is to recognize patients at risk of further
UTI-related problems. This study reports the clinical features of 19 pediatric patients with UTIs in whom associated hepatic
and/or pulmonary nodules were incidentally diagnosed by the imaging tests performed for the UTI. Hepatic nodules in five patients
were detected on ultrasound scans, and pulmonary nodules and both hepatic and pulmonary nodules were detected in 12 and two
children by dimercaptosuccinic acid scintigraphy. The mean age of the patients was 24.5 months. Vesicoureteral reflux (VUR)
was detected in nine of 17 patients (52.9%), acute pyelonephritis was identified in nine of 18 patients, and renal scarring
was found in 57.1% patients with pyelonephritis. On follow-up, the hepatic and/or pulmonary nodules regressed in all patients.
About 85.7% of patients experienced a recurrence of UTI within 1 year. In comparison with age- and sex-matched controls with
UTIs without pulmonary or hepatic nodules, the presence of VUR and the recurrence of UTI within 1 year were higher in patients
with UTIs and nodules (P < 0.05). The hepatic and/or pulmonary nodules identified on the ultrasound scan and by dimercaptosuccinic acid scintigraphy
may provide a valuable diagnostic marker for the proper management of patients with an UTI. 相似文献
7.
Malcolm G. Coulthard Ian Verber Jagat C. Jani Geoffrey R. Lawson Catriona A. Stuart Venita Sharma William H. Lamb Micheal J. Keir 《Pediatric nephrology (Berlin, Germany)》2009,24(10):2059-2063
The aim of the study reported here was to determine whether kidney scarring after urinary tract infections (UTI) in children
can be prevented and to identify the risk factors for developing scars. We identified children in the Northern health region
of the UK who had been seen to develop scars, identified as new defects on dimercapto-succinic acid (DMSA) scanning. Risk
factors were sought by reviewing case-notes and interviews with parents. Twenty girls were identified whose new scarring was
strongly associated with having both vesicoureteric reflux (VUR) and a UTI (p = 0.0001); 19/23 (83%) of kidneys exposed to both of these factors developed scars. Children were much more likely to be
febrile (94 vs. 30%, p < 0.0001) or unwell (82 vs. 10%, p < 0.0001) during their earlier UTIs when they were of median age 2.8 years (range 0.3–5.0 years) and did not scar, compared
to their later UTIs at age 7.3 years (1.2–12.5 years), when they did scar. However, most patients were treated within 1 day
of their symptoms for their early UTIs, compared to a wait ≥7 days for later UTIs (p = 0.001). Being febrile or unwell during a UTI does not predict the development of scars, but prompt treatment appears to
prevent scarring in children with VUR. 相似文献
8.
Prelog M Schiefecker D Fille M Wurzner R Brunner A Zimmerhackl LB 《Pediatric nephrology (Berlin, Germany)》2008,23(4):597-602
The aim of this study was to characterize the pathogens and their antibiotic susceptibilities in defined groups of children
(total number 694) with urinary tract infection (UTI) regarding age, first UTI (FUTI) or recurrent UTI (RUTI), renal abnormalities
or vesico-ureteric reflux (VUR) in order to optimize empirical antibiotic therapy and prophylaxis. In patients aged between
1 month and 24 months with a first febrile UTI (FUTI; n = 205) the leading pathogen was Escherichia coli (E. coli) (83.4%). In comparison with patients with FUTI, those with RUTI (n = 24) had more Enterococcus and Enterobacter infections and higher resistance rates of E. coli against trimethoprim (TMP), trimethoprim/sulfamethoxazole (SXT) or ampicillin (AMP). Boys with ultrasound-detected renal
abnormalities (n = 71) showed 14.2% Pseudomonas and 59.1% E. coli infections versus girls (n = 48) (2.1% Pseudomonas and 93.7% E. coli). Of 390 patients who underwent voiding cysto-urethrography, 31.5% had VUR. Of them, 45.5% received antimicrobial prophylaxis
with SXT (n = 30) or cefazolin (n = 26). There was no difference between girls (n = 242) and boys (n = 148) regarding the frequency of VUR and pathogens. There were more TMP- and SXT-resistant E. coli cultures from patients with VUR (37.8%) than from those without VUR (25.8%). Treatment with TMP, SXT and AMP alone appeared
to be insufficient in many cases because of high resistance rates of E. coli and other uropathogens. 相似文献
9.
Zaffanello M Tardivo S Cataldi L Fanos V Biban P Malerba G 《Pediatric nephrology (Berlin, Germany)》2011,26(7):1017-1029
Identifying patients who may develop renal scarring after urinary tract infections (UTI) remains challenging, as clinical
determinants explain only a portion of individual risk. An additional factor that likely affects risk is individual genetic
variability. We searched for peer-reviewed articles from 1980 to December 2009 in electronic databases that reported results
showing an association between gene polymorphims and renal scaring after UTI. Two independent researchers screened articles
using predetermined criteria. Studies were assessed for methodological quality using an aggregate scoring system. The 18 studies
ultimately included in the review had investigated 16 polymorphisms in nine genes in association with renal scarring formation
after UTI. Based on the predetermined criteria for assessing the quality of the studies, 12 studies (67%) were identified
as being of poor quality design. A meta-analysis of cumulative studies showed on association between renal scarring formation
after UTI and the angiotensin converting enzyme insertion/deletion polymorphism [ACE I/D; recessive model for D allele; odds
ratio (OR) 1.73, 95% confidence interval (CI) 1.09–2.74, P = 0.02] or transforming growth factor (TGF)-β1 c.-509 T > C polymorphism (dominant model for T allele; OR 2.24, 95% CI 1.34–3.76,
P = 0.002). However, heterogeneity among studies was large, indicating a strong difference that cannot only be explained by
differences in study design. The studies reviewed in this article support a modest involvement of the vasomotor and inflammatory
genes in the development of renal scarring after UTIs. This review also shows that only few possible candidate genes have
been investigated for an association with renal scarring, raising the hypothesis that some gene polymorphisms may exert their
effects through an interaction with as yet uninvestigated factors that may be related to geographic and/or socio-economic
differences. 相似文献
10.
Prognostic value of the acute DMSA scan in children with first urinary tract infection 总被引:2,自引:0,他引:2
Biggi A Dardanelli L Cussino P Pomero G Noello C Sernia O Spada A Camuzzini G 《Pediatric nephrology (Berlin, Germany)》2001,16(10):800-804
We attempted to verify in a group of 101 children with first urinary tract infection whether it was possible to identify
groups of patients with different risks of developing renal scarring by taking into account both the extent of kidney involvement
documented in the acute phase of infection using a dimercaptosuccinic acid (DMSA) scan, and the presence or absence of vesicoureteral
reflux (VUR). The frequency of persistent lesions in kidneys with mild-moderate lesions (less than 50% of kidney involvement)
in the presence of VUR or in non-refluxing kidneys was similar (P=0.1447), while the frequency of persistent lesions in kidneys with severe lesions in the presence of VUR was significantly
higher than the frequency of persistent lesions in non-refluxing kidneys (P=0.0089). The extent of kidney involvement and the presence of VUR make possible the identification of different categories
of risk of scarring: in the ”low risk group” (normal kidney with/without VUR) the risk of scarring is 0%; in the ”intermediate
risk group” (mild lesions with/without VUR; extensive lesions without VUR) the risk of scarring is between 14% and 38%, while
in the ”high risk group” (extensive lesions with VUR) the risk of scarring is 88%. Quantifying the risk of scarring could
help in planning the treatment or in modifying the later strategy.
Received: 5 June 2000 / Revised: 23 January 2001 / Accepted: 24 April 2001 相似文献
11.
Bitsori M Karatzi M Dimitriou H Christakou E Savvidou A Galanakis E 《Pediatric nephrology (Berlin, Germany)》2011,26(11):2003-2007
Urine IL-8 concentrations are known to be elevated in urinary tract infection (UTI), as well as in vesicoureteral reflux (VUR)
even in the absence of infection. In this study we further investigated urine IL-8 in infants with congenital anomalies of
the kidneys and urinary tract and with antenatally diagnosed isolated pelvic dilatation. Urine IL-8 was measured in 159 infants
aged 1 month to 1 year with acute UTI (group A, n = 26), resolved UTI (group B, n = 16), VUR without recent UTI (group C, n = 44), non-VUR congenital urinary anomalies without recent UTI (group D, n = 30), isolated antenatal pelvic dilatation (group E, n = 14) and in infants without known urinary tract condition (control group F, n = 29). Median values of urine IL-8/creatinine levels were 61.5, 4.64, 15.5, 14.3, 1.06 and 4.19 pg/μmol in groups A, B, C,
D, E and F respectively. Compared with the control group, urine IL-8 was elevated in infants with acute UTI, VUR without acute
UTI and congenital anomalies without acute UTI (p < 0.0001; p < 0.005; and p = 0.027 respectively), but not in infants with resolved UTI or with antenatal pelvic dilatation. Urine IL-8 levels are elevated
in a variety of infectious and non-infectious urinary tract conditions, and hence may serve as a sensitive but not specific
screening biomarker of urinary tract diseases. 相似文献
12.
Introduction: Pyelonephritis-induced renal scarring in children is a major predisposing factor for proteinuria, hypertension, and ultimate
renal failure. The aim of this study was to investigate and compare the efficacy of Tc99m dimercaptosuccinic acid (Tc-DMSA)
renal scintigraphy and renal ultrasonography (USG) in detecting renal scars in children with primary vesicoureteral reflux
(VUR). Materials and methods: Tc-DMSA scan and USG studies were done in 62 children who were admitted to our clinic between 1997 and 2003 because of documented
urinary tract infection (UTI) and diagnosed with primary VUR. Renal scarring detection rates of Tc-DMSA scan and USG were
compared according to reflux grades. Results: In the whole group, renal scars were detected by Tc-DMSA scan and USG in 55% and 38% of refluxing units, respectively. Detection
rates of Tc-DMSA and USG according to reflux grades were as follows: 47% and 29 % in low-grade VUR (grades 1 and 2), 46 %
and 25% in mid-grade VUR (grade 3), 76% and 65% in high-grade VUR (grades 4 and 5), respectively. Conclusion: USG was found to be an inappropriate study in the detection of renal parenchymal scars, irrespective of the reflux grade.
In this study, Tc-DMSA scan detected scars in 35% of kidneys reported to be normal on USG. 相似文献
13.
Niko Kei-chiu Tse Sandy Lai-kei Yuen Man-chun Chiu Wai-ming Lai Pak-chiu Tong 《Pediatric nephrology (Berlin, Germany)》2009,24(9):1699-1703
This retrospective study aimed to evaluate the applicability of the selective approach of imaging infants < 6 months old with
urinary tract infection (UTI) according to the UTI guidelines of the National Institute for Health and Clinical Excellence
(NICE) 2007. Infants < 6 months old with their first UTI from January 2001 to December 2006 having undergone an ultrasound
examination of the urinary tract, a micturating cystourethrogram, and a late di-mercaptosuccinic acid (DMSA) scan, were included.
Their condition was evaluated against a set of risk features according to the UTI guidelines. Those having any one of these
were classified as atypical and those having none as typical. There were 134 infants reviewed, with a typical (98 infants)
to atypical (36 infants) ratio of 2.7 to 1. Girls were found to be relatively more represented in the atypical group [male
(M):female (F) = 1.3:1] than in the typical group (M:F = 4.4:1) (P < 0.004). There were significantly more infants with abnormal micturating voiding cystourethrograms (MCUGs) (P = 0.007), more refluxing ureters (P < 0.001) and more significant vesico-ureteral reflux (VUR) (≥ grade III) (P = 0.013) in the atypical group than in the typical group; while there was no significant difference in ultrasound (US) and
DMSA scan findings between the two groups. In the atypical group there was no difference in imaging studies (and, thus, the
results) between the conventional practice and the NICE UTI recommendation. In the typical group, if the recommendations of
the guidelines had been followed (i.e. only those with abnormal US would have been further investigated), 25 refluxing ureters
and 22 scarred kidneys would have been left undiagnosed. In conclusion, application of the suggested selective imaging approach
would leave a significant number of VUR and renal scars undiagnosed, and it may not be an optimal practice for infants less
than 6 months old with their first UTI. The best approach remains to be clarified. 相似文献
14.
Kowalewska-Pietrzak M Klich I Mlynarski W 《Pediatric nephrology (Berlin, Germany)》2008,23(12):2195-2200
The aim of this study was to assess the association between the transforming growth factor-β1 (TGF-β1) gene polymorphisms rs1800469 (commonly known as T-509C) and rs1982073 (commonly known as Leu 10→Pro) and primary vesicoureteral reflux (VUR) and renal scarring. Using a case–control approach, we examined 121 children
with primary VUR and 169 controls. Genotyping of the TGF-β1 gene polymorphisms was performed by restriction fragment length polymorphism (RFLP) analysis. The 99mTc-DMSA– or 99mTc-unitiol–single photon emission computed tomography method was used to evaluate renal scars in 84 of 121 VUR children. Statistical
analysis revealed differences in rs1800469 genotype frequencies between VUR patients and controls (p = 0.0021). Our data demonstrate that individuals homozygous for the TT genotype are at risk of primary VUR [odds ratio (95%
confidence interval) = 2.7 (1.46–5.08)]. Distribution of the rs1982073 polymorphism was similar in VUR children and controls.
In terms of renal scarring, patients were stratified into non-scar and scar subgroups, and no differences in the genotype
frequencies of either polymorphism was found. Previous reports have shown that the TT genotype of the rs1800469 polymorphism
is a risk factor for renal scarring in primary VUR, and the results of our study suggest that this same polymorphism is associated
with susceptibility to this congenital uropathy. 相似文献
15.
Erdoğan H Mir S Serdaroğlu E Berdeli A Aksu N 《Pediatric nephrology (Berlin, Germany)》2004,19(7):734-737
The possible relationship between the angiotensin-converting enzyme (ACE) gene insertion/deletion (I/D) polymorphism and renal scarring secondary to vesicoureteral reflux (VUR) has recently attracted attention and the DD genotype was postulated to be a risk factor for renal scarring. However, available data represent conflicting results. The aim of this study was to investigate the ACE gene I/D polymorphism and the other known risk factors for renal scarring in children with low- and high-grade VUR. The study included 96 (67 females, 29 males) patients (mean age at diagnosis 3.7±3.3 years) with VUR that were assessed for ACE I/D gene polymorphism. ACE genotypes were determined as II, ID, and DD using the polymerase chain reaction. The control group consisted of 103 healthy children with the same ethnicity to find the distribution of ACE gene I/D polymorphism in the population. The frequency of renal scarring was 80.8% in the high-grade reflux group and 34.3% in the low-grade reflux group. There was no difference between groups with renal scarring and without scarring with respect to gender, family history of VUR, age at diagnosis of VUR, associated urological abnormalities, frequency of urinary tract infection episodes, and the occurrence of bilateral or unilateral VUR. Genotype DD was found to be a significant risk factor for renal scarring in the study group by multivariate regression analysis (odds ratio 3.79, P=0.011). It was not a risk factor in high-grade reflux patients (odds ratio 0.60, P=0.62). However, it was a risk factor in low-grade patients with respect to renal scarring (odds ratio 4.0, P=0.024). Although renal scarring is not common in low-grade reflux patients, there may be scarring in some patients. DD polymorphism of the ACE gene is a significant risk factor in low-grade reflux patients with renal scarring. 相似文献
16.
Soylu A Demir BK Türkmen M Bekem O Saygi M Cakmakçi H Kavukçu S 《Pediatric nephrology (Berlin, Germany)》2008,23(12):2227-2232
We evaluated the predictors of renal scar in children with urinary tract infections (UTIs) having primary vesicoureteral reflux
(VUR). Data of patients who were examined by dimercaptosuccinic acid (DMSA) scintigraphy between 1995 and 2005 were evaluated
retrospectively. Gender, age, reflux grade, presence/development of scarring, breakthrough UTIs, and resolution of reflux,
were recorded. The relation of gender, age and VUR grade to preformed scarring and the relation of gender, age, VUR grade,
presence of preformed scarring, number of breakthrough UTIs and reflux resolution to new scarring were assessed. There were
138 patients [male/female (M/F) 53/85]. Multivariate analysis showed that male gender [odds ratio (OR) 2.5], age ≥ 27 months
in girls (OR 4.2) and grades IV–V reflux (OR 12.4) were independent indicators of renal scarring. On the other hand, only
the presence of previous renal scarring was found to be an independent indicator for the development of new renal scar (OR
13.4). In conclusion, while the most predictive variables for the presence of renal scarring among children presenting with
a UTI were male gender, age ≥ 27 months in girls, and grades IV–V reflux, the best predictor of new scar formation was presence
of previous renal scarring. 相似文献
17.
Silva JM Diniz JS Silva AC Azevedo MV Pimenta MR Oliveira EA 《Pediatric nephrology (Berlin, Germany)》2006,21(9):1285-1292
The aim of this retrospective cohort study was to evaluate independent predictive factors of chronic kidney disease (CKD) in children with severe bilateral primary vesicoureteral reflux (VUR). Between 1970 and 2004, 184 patients were diagnosed with VUR (grades III–V) and were systematically followed up at a single tertiary renal unit. CKD was defined as estimated glomerular filtration rate <75 ml/min per 1.73 m2 body surface area in two consecutive examinations. Risk of CKD was analyzed by the Kaplan–Meier method and Cox’s regression model. The probability of CKD for patients with bilateral severe reflux was estimated at 15% by 10 years after VUR diagnosis. After adjustment, four variables remained independently associated with CKD during follow-up: age at diagnosis >24 months [relative risk (RR)=4.8, 95% confidence interval (95%CI), 1.8–12.7, P<0.001], VUR grade V (RR=3.5, 95%CI, 1.5–7.9, P=0.002), bilateral renal damage (RR=2.86, 95%CI, 1.3–6.1, P=0.007), and decade of admission after 1990 as a protective factor (RR=0.16, 95%CI 0.06–0.43, P<0.001). A delay in the diagnosis of VUR more than 12 months after urinary tract infection (UTI) was also a predictive factor in an alternative model (RR=2.2, 95%CI, 1.1–6.6, P=0.03). Prognosis regarding renal function was relatively poor after a long-term follow-up of patients with bilateral severe reflux. 相似文献
18.
In order to analyze the risk factors for recurrence and the value of routine follow-up by monthly urine cultures in a group
of children who had their first episode of urinary tract infection (UTI) under 1 year of age, we performed a retrospective
survey of 262 children (134 girls, 128 boys) who were treated for their first UTI while aged under 1 year in the Department
of Pediatrics, University of Oulu, during the years 1978–1984. Detailed data on these children concerning their first and
recurrent UTIs were collected from hospital records using a formulated data sheet. Causative bacteria and vesicoureteral reflux
(VUR) were analyzed as possible risk factors for recurrent UTI. The time of recurrence and the possible symptoms during the
recurrent UTI were also investigated. The follow-up period after the first UTI was 3 years; 35% of the boys and 32% of the
girls contracted a recurrent UTI during the 3-year follow-up. In 86% of cases, the first UTI recurrence occurred within 6
months of the primary UTI. Recurrent UTIs were detected significantly earlier with routine monthly follow-up compared with
those seeking treatment because of symptoms (log rank test P<0.01). There was a significant difference in the number of recurrences of UTI according to the grade of VUR (P=0.006). Recurrence-free survival was shorter and recurrent UTIs occurred more often in the children with grade 3–5 VUR than
in those with grade 0–2 VUR (log rank test P=0.0005). Children without VUR and children with grade 1–2 VUR did not differ in the recurrence rate, and thus grade 1–2 VUR
did not increase the risk for recurrent UTI. Monthly routine urine cultures are efficient in detecting recurrent UTI infections
in children. Since grade 3–5 VUR is a risk factor both for increased recurrence rate of UTI and for possible subsequent renal
damage, these children should be followed with monthly urine cultures for UTI recurrences if not on preventive medication.
Since the vast majority of UTI recurrences occur within 6 months of the first UTI, routine follow-up for 6 months seems to
be sufficient after symptomatic UTI in children with grade 3–5 VUR.
Received: 10 January 2000 / Revised: 21 August 2000 / Accepted: 21 August 2000 相似文献
19.
《Journal of pediatric surgery》2021,56(10):1811-1815
ObjectiveChildren with anorectal malformations (ARM) have a high rate of renal anomalies and increased risk of urinary tract infection (UTI). We aimed to determine whether using routine Micturating Cystourethrogram (MCUG) to detect VUR is effective in reducing the incidence of UTI or renal scarring in children with ARM.MethodsA retrospective study of consecutive children diagnosed with ARM in two centres with a minimum of 3 years follow-up was performed, excluding those with cloaca or an MCUG prior to ARM repair. Univariate and multivariate logistic regression analysis was used to determine variables which were associated with VUR, UTI and renal scarring. Associations are described as Odd's Ratio (OR), 95% Confidence Interval. Significance was taken as p<0.05.Results344 children were included with a median age of 8 years (IQR 5–11 years). 150 (44%) were female. 89 (26%) had renal anomalies and 101 (29%) had spine anomalies. 148 patients had routine MCUG and VUR was found in 62 (42%) of these children. Univariate analysis did not correlate any of the assessed variables with VUR or renal scarring. However, abnormal renal ultrasound - OR 6.18 (95% CI 2.99–13.07, p 0.0001) was associated with UTI whilst abnormal spine - OR 0.27 (95% CI 0.10–0.62, p 0.009), low ARM - OR 0.30 (CI 0.14–0.63, p 0.006) and intermediate ARM - OR 0.35 (CI 0.17–0.70, p 0.01) were associated with a reduced risk of UTI. On multivariate analysis, only abnormal renal USS retained a significant association with UTI (p<0.0001).ConclusionsVUR is common in patients with ARM. Children with an abnormal R-USS are at increased risk of UTI. Performing routine MCUG does not reduce the risk of UTI in children with ARM. 相似文献
20.
Oberritter Z Somogyi R Juhasz Z Pinter AB 《Pediatric nephrology (Berlin, Germany)》2008,23(5):775-778
A relationship between the Teflon deposit, visible with ultrasound, and long-term success of subureteric Teflon injection
(STING) treatment was investigated. The study included only those patients with primary vesicoureteral reflux (VUR), in whom
the reflux had disappeared and the Teflon deposits were visible 6 weeks following STING treatment. Cessation of VUR was proven
by voiding cysto-urethrography (VCUG) in 99 patients (143 ureters). Average follow-up time was 9 (4–12) years. Patients were
divided into two groups: group I, deposits visible with ultrasound [deposit (+)], and group II, no visible deposits at the
end of the follow-up period [deposit (−)]. Reflux recurrence, the occurrence of urinary tract infection (UTI), and pyelonephritis
were investigated, and technetium scintigraphy scans were examined. The deposit (+) group included 43 patients (65 ureters),
and the deposit (−) group contained 56 patients (78 ureters). In the deposit (+) group there were no recurrences of VUR; however,
17 recurrences were found in the deposit (−) group (P < 0.05). Dimercaptosuccinic acid (DMSA) scintigraphy scans and occurrence of UTI showed significant difference between the
groups (P < 0.05). A close relationship was found between the disappearance of the Teflon deposit and the recurrence of VUR. Disappearance
of the Teflon deposit and repeated bacteriuria is a warning sign of the recurrence of VUR; therefore, VCUG might be warranted
for these patients. 相似文献