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[Urinary tract infections in children].

The advances in definition, pathogenesis, diagnosis and treatment of urinary tract infections (UTI) in children have been presented. The mechanism of UTI and predisposing factors related to host and bacteria, problems in evaluating of UTI with the use of fresh urine microscopy for the presence of leukocytes, utility and reliability of ultrasonography, intravenous urography, contrast micturating cystourethrography, and technetium-99m dimercaptosuccinic acid renoscintigraphy studies were discussed. Differences in clinical symptoms and treatment of acute and chronic phase of UTI with oral and intravenous antibiotics and other drugs depending on the age of a patient, management of asymptomatic bacteriuria, side effects of drugs, as well as prophylaxis, were reported.

Acute Disease↗

The efficacy of nursing education as an intervention in the treatment of recurrent urinary tract infections in individuals with spinal cord injury.

Urinary tract infection (UTI) continues to be the most frequent secondary medical complication experienced by persons with spinal cord injury (SCI). We developed a carepath designed to minimize recurrent UTIs in patients identified as at risk. Data were collected in a prospective fashion for 1,000 consecutive days at an outpatient SCI clinic. The number of UTIs decreased to below threshold in 65 percent of the patients when the nurse clinician counseled them regarding proper technique and hygiene related to clean intermittent catheterization. Of the patients who responded to this intervention, 73 percent required multiple counseling sessions. We conclude that educational intervention by a clinic nurse is a simple, cost-effective means of decreasing the risk of UTIs in individuals with SCI who are identified as at risk.

Cost-Benefit Analysis↗

Demographic characteristics of patients with community-acquired bacteriuria and susceptibility of urinary pathogens to antimicrobials in northern Israel.

BACKGROUND: Urinary tract infection is one of the most common bacterial infections. Since antibiotics are given empirically, it is necessary to assess the distribution and susceptibility of the microorganisms in each case. OBJECTIVES: To evaluate the demographic characteristics of ambulatory patients with UTI, the distribution and susceptibility of uropathogens, and the risk factors associated with trimethoprim-sulfamethoxazole resistant bacteria in women. METHODS: During 12 days in August 1997 all the urine cultures sent to the Tel-Hanan Laboratory (Haifa) were evaluated. Demographic characteristics of the patients, their underlying diseases and the previous use of antibiotics were obtained. RESULTS: During the 12 day survey 6,495 cultures were sent for evaluation. Of the 1,075 (17%) that were positive 950 were included in the study; 83.7% were from females, of whom 57% were > or = 50 years old. Escherichia coli was the most common pathogen, with 74.7% in the female and 55% in the male population; 86.2% of the E. coli were resistant to amoxicillin, 38.8% to cephalexin and 46.8% to TMP-SMX. Cefuroxime (4.2%), ofloxacin (4.8%), ciprofloxacin (4.8%) and nitrofurantoin (0.4%) showed the lowest rates of resistance. By a multivariant analysis, post-menopause and recurrent UTI were found to be independent factors related to TMP-SMX resistance in women. CONCLUSION: In northern Israel, ampicillin, cephalexin and TMP-SMX cannot be used empirically in the treatment of community-acquired UTI. Post-menopause and recurrent UTI are independent factors associated with TMP-SMX resistant pathogens in women.

Adolescent↗

[Empirical treatment of urinary tract infections in the delivery room--findings and desires].

Urinary tract infection (UTI) is the most common bacterial infection during pregnancy. In prenatal and delivery wards treatment is usually started at once in pregnant women with symptoms suggesting UTI, but there is no uniformity as to treatment. We surveyed such treatment in the delivery rooms throughout Israel, and whether the treatment differed in simple cystitis as opposed to pyelonephritis. Results of positive urine cultures from symptomatic parturients admitted here during 1995-1996 were examined. There were 17 different empiric treatment protocols in 28 delivery rooms, whose daily cost ranged from 1-119 NIS. We present the antimicrobial sensitivity of 156 bacteria isolated from the urinary cultures from pregnant women in our prenatal ward. Based upon urinary flora, sensitivity and daily cost, we suggest a protocol for empiric treatment. We recommend first and second generation cephalosporins for treatment of simple lower (UTIs), while gentamicin is suggested for treatment of clinical pyelonephritis during pregnancy. There is no medical nor economic justification for the multiplicity of empiric treatment protocols currently used. Considering our results, our protocol is cost-effective for the empiric treatment of UTI in hospitalized parturients and in the community as well.

Anti-Bacterial Agents↗

[Urinary trypsin inhibitor in pregnant women with normal and pathological course of pregnancy].

Urinary trypin inhibitor concentration (UTI) was measured by Fritz and all method in the groups of women: non-pregnant (I), pregnant (II), in pregnancy complicated by EPH-gestosis (III) and in the prolongated pregnancy (IV). Furthermore, in the urine from the investigated group the index protein/creatinine was established. There was noticed the statistically significant increase in the UTI concentration in II, III, IV groups comparing to the non-pregnant group--I, and the increase in UTI in III and IV group in comparison to group II. The UTI measurement in the pregnant women connected with the index protein/creatinine could be significant for diagnosing of the pathology of pregnancy.

Adolescent↗

Evaluation of perioperative administration of methylprednisolone sodium succinate and urinary trypsin inhibitor for prevention of surgical stress.

The authors could confirm that the laparoscopy-assisted cholecystectomy (LAC) elicited less postoperative biological responses compared to the ordinary cholecystectomy under laparotomy (OCL), when granulocyte elastase (GE)-alpha1-protease inhibitor complex (GEcomplex), interleukin-6, pancreatic secretory trypsin inhibitor (PSTI) and alpha1-antitrypsin (alpha1-AT) were used as biological response markers. Perioperative administrations of methylprednisolone sodium succinate (MPSL: 10 mg/kg body weigh) or MPSL with urinary trypsin inhibitor (UTI) could suppress such postoperative reactions after OCL down to the levels after LAC, especially immediately after surgery. Preoperative MPSL followed by continuous infusion of UTI for 3 days exerted the most prominent suppressive effects on these markers compared to the effect of the preoperative MPSL alone as well as the preoperative administration of MPSL followed by UTI infusion for only one hour. Bolus administration of MPSL induced no lymphocytopenia. Decreased plasma level of alpha1-AT immediately after operation is thought to be due to consumption in binding to GE as well as other lysosomal enzymes, while production of rapid turn over proteins are still not accelerated in the liver. In early postoperative phase after administration of MPSL, administration of UTI was efficacious to prevent fluctuation of biological response markers. Clinical applications of these drugs might be approved especially for those patients with poor risk.

Adult↗

Changing pattern of antimicrobial susceptibility of organisms causing community acquired urinary tract infections.

OBJECTIVE: To assess common organisms causing Urinary Treat Infection (UTI) in this community and to see antimicrobial susceptibility pattern of these isolates. DESIGN: Prospective study on urine samples. SETTING: Tertiary care hospital in Karachi. METHODS: Over a period of 8 years (1990-97) 9,892 urine samples grew significant bacteriuria for various organisms. All Gram negative rods and entercocci was identified by using API 20E and API 32 strips respectively. Staphylococci were identified by catalase, coagulase and D'Nase tests. Antimicrobial sensitivity testing of all isolates was performed on Diagnostic Sensitivity Test plates by Kerby Bauer method. The discs used were ampicillin, trimethoprim-sulfamethoxazole, cefotaxime, ceftriaxone, aztreonam, ofloxacin, carbenicillin, amikacin, gentamicin, penicillin, clindamycin, methicillin, vancomycin, ceftazidime, cefuroxime, Nalidixic acid, pipemedic acid and Nitrofurantoin. RESULTS: Our results indicate that E. coli and Klebsiella aerogenes are the most common organisms causing UTI in this community. Other organisms involved are Pseudomonas aeroginosa, Enterobacter species, Enterococcus, Proteus mirabillus, Staphylococcus aureus and Staphylococcus saprophyticus. Organisms resistant to various antimicrobial agents such as gentamicin, Amikacin, Ofloxacin, Cefotaxime and Ceftazidime are increasing. CONCLUSION: In conclusion, E. coli and Klebsiella aerogenes are the most common organisms causing UTI in this community. Pattern of antibiotic susceptibility to first line antibiotics is changing. Antimicrobial susceptibility testing of all isolates is crucial for the treatment of UTI.

Anti-Bacterial Agents↗

[Gram stain and dipstick as diagnostic methods for urinary tract infection in febrile infants].

AIM: To compare urinary gram staining and dipstick for the detection of urinary tract infection (UTI)in febrile infants. METHODS: Prospective study of 175 febrile infants aged 124 months. In all infants, a urine specimen was analyzed to detect UTI. The dipstick test was used to detect leukocytes and nitrites and samples were taken for gram staining and urine culture. Urine was obtained by urethral catheterization. Positive urine results were defined as 50.000 colony forming units per millimeter of urinary tract pathogen. RESULTS: The mean age was 9.8 months (SD: 6.64). Urine culture was positive in 87 patients (49.5%). Diagnosis of UTI was confirmed in 91 patients (51.9%), of whom 74 were admitted for clinically suspected pyelonephritis (81.3%). Gram stain had the highest specificity (98.9%) and pyuria the highest sensitivity (90.8%). Better results were obtained using the combination of dipstick and Gram stain with a sensitivity of 93.1%, specificity of 98.4%, positive predictive value of 98.5% and negative predictive value of 92.5%. CONCLUSIONS: Urinary Gram stain appears to be more reliable than dipstick in detecting UTI in febrile infants but the results of both tests should be interpreted together.

Child, Preschool↗

Urinary tract infection risk factors and gender.

Urinary tract infections (UTIs) are more common among women than men, although the prevalence in elderly men and women is similar. Most of the research on UTI has focused on young, sexually active women who are at high risk for developing an infection. The predominant UTI risk factors in young women are sexual intercourse and the use of spermicidal contraceptives. Other important UTI risk determinants in selected age groups include anatomic and physiologic factors, such as obstructing lesions and estrogen deficiency; genetic factors, such as blood group secretor status; antibiotic exposure; functional status; and possibly receptive anal intercourse and HIV infection.

Adult↗

Urinary tract infection associated with ureteral stents in renal transplantation.

OBJECTIVES: In the mid 1980s, ureteral stents were used in renal transplantation when ureteral injury had occurred. Subsequently, it was shown that routine ureteral stent placement at the time of transplantation reduced urological complications. We carried out a chart review on renal transplant patients and noted which patients developed urinary tract infections (UTIs) with stents in place, and whether these infections ultimately affected transplant outcome. We sought to distinguish subgroups of patients who were more likely to develop infection and to identify the optimum time for stent removal. PATIENTS AND METHODS: We performed a retrospective chart review of 213 patients who underwent renal transplantation in 1994 and 1995. Adequate follow-up information was available on 167 patients with intraoperative stent placement. Of these 167 patients, 4 patients expired and 8 required transplant nephrectomy due to complications unrelated to the stent. RESULTS: In total, 35 patients (22.6%) developed a post-operative UTI. One infection occurred during the first week following transplant, 3 developed within 2 weeks, and importantly, the remaining 32 infections occurred more than 2 weeks after transplant. An increase in infections in diabetics (25.7%) as compared to other transplant recipients (20.2%) was noted. Patients with cadaveric renal transplants are also at higher risk of UTI (24%) compared to those with living related donors (15%). CONCLUSION: The use of ureteral stents is safe, but is associated with a UTI rate of 22.6%. To reduce infection rates, we recommend stent removal within 14 days and earlier if possible, particularly in diabetic patients who have received a cadaveric renal transplant.

Journal Article↗

Urinary tract infections during pregnancy in South Carolina.

This study presents evidence that over 20 percent of pregnant women with a UTI in South Carolina did not have an antibiotic pharmacy claim within 14 days of diagnosis. Untreated maternal UTI in pregnancy was associated with a 22 percent increased risk for MR/DD in the infant compared to the risk for women who had a UTI and a pharmacy claim for an antibiotic and 31 percent increased risk compared to women who did not have a UTI. The importance of medications compliance should be emphasized in the care of pregnant women.

Anti-Infective Agents, Urinary↗

[Anatomic and functional disorders of the urinary tract in children with urinary tract infections].

The study is based on clinical analysis of 207 case recordings of children with urinary tract infection (UTI) hospitalized in The Department of Pediatric Nephrology, University Hospital, Lublin in 1995-1999. The study comprised children aged 1-18 years, average 8.8 +/- 0.4 (77.8% girls). Recurrent UTI was observed in 76.8% of children. Acute UTI was diagnosed in 20.8% of children. In 2.4% of children UTI was detected during hospitalization because of other diseases. In all children urinary X-ray examination was performed. Anatomical abnormalities were detected in 38% of children. Vesico-ureteral reflux was diagnosed in 61 children (29.5%). In 16/25 (64%) of children with vesico-ureteral reflux renal scarring was detected by radionuclide examination. In some children urodynamic examination was performed and in all of them functional abnormalities were detected.

Adolescent↗

Interrelations of organism prevalence, specimen collection method, and host age, sex, and breed among 8,354 canine urinary tract infections (1969-1995).

Selected information was compiled from canine urinalyses and urine cultures conducted between January 1969 and December 1995. Eight thousand three hundred fifty-four microbial isolates (bacteria and fungi) included 4,873 isolates from females and 3,481 from males. Ten bacterial genera accounted for 96.3% of the urinary isolates, including Escherichia coli (44.1%), Staphylococcus spp. (11.6%), Proteus spp. (9.3%), Klebsiella spp. (9.1%), Enterococcus spp. (8.0%), and Streptococcus spp. (5.4%) as the 6 most common isolates in both genders of dogs. Among these 6 genera, female dogs were generally predisposed over males, although males had more urinary tract infections (UTIs) caused by Klebsiella spp. Distributions of ages at UTI diagnosis tended to be similar between genders. Infection with a single microbial species was responsible for >72% of UTIs in both genders. Among females, 40 breeds and a mixed-breed group represented 90.2% of all positive urine cultures, 88.4% of the individual dogs with UTIs. and 88.2% of the microbial isolations. Among males, these same 41 breed groups represented 87.9% of all positive urine cultures, 87.6% of the individual dogs, and 88.2% of the microbial isolations.

Age Distribution↗

[First urinary tract infection in healthy infants: epidemiology, diagnosis and treatment].

BACKGROUND: Urinary tract infection (UTI) is one of the most common infections in infants. It presents certain peculiarities compared with other pediatric age groups in terms of symptomatology, diagnosis and the therapeutic approach employed to prevent sequels. OBJECTIVE: To analyze the epidemiology, clinical and laboratory findings, etiology, diagnosis and treatment of first-time UTI in healthy infants. MATERIAL AND METHODS: Between January and December 1999, we performed a retrospective study of 131 previously healthy infants admitted to our hospital with a diagnosis of first-time UTI. Demographic data, clinical characteristics, urine dipstick, urinalysis and urine culture (vesical catheterization), blood cell count and PCR, kidney ultrasonography, voiding cystourethrogram and DMSA scintigraphy were reviewed. RESULTS: We studied 131 patients (median age: 90 days). In infants younger than 30 days, UTI was more prevalent in males. The most frequent symptom was fever (73.3 %). Seventy-one patients fulfilled the criteria for acute pyelonephritis. The presence of nitrituria was low. Escherichia coli was isolated in 90.1 % of the patients. Voiding cystourethrogram detected vesicoureteric reflux in 18.4 % of the patients. Scintigraphy revealed renal scarring in 15.1 %. No significant correlations were found between renal scarring in late scintigraphy and a diagnosis of acute pyelonephritis and/or alterations in the cystourethrogram. CONCLUSIONS: Fever was the main symptom. E. coli was the most commonly isolated microorganism. Nitrituria had low sensitivity in infants. Ultrasonography had low specificity. Scintigraphy showed the highest sensitivity and specificity in the detection of renal scarring. Predictability improved when scintigraphy was performed a few months after acute infection.

Female↗

[Urinary excretion of Tamm-Horsfall protein, albumin and beta-2 microglobulin in children with recurrent urinary tract infection].

In the study 27 children after urinary tract infection (UTI) and 28 healthy children were examined. Vesico-uretic reflux in 10 patients, and in 17 normal urinary excretion were diagnosed. In 11 children the family history was documented. The 17 healthy controls were siblings of children with normal urinary excretion. In all children urinary excretion of albumin, beta 2-microglobulin and Tamm-Horsfall protein (THP) were examined. Children with UTI both with and without urinary obstruction show the increased urinary excretion of THP as compare with healthy children. Healthy siblings of children with UTI show increased urinary concentration of THP as compared with healthy controls. In both examined groups of children with UTI, function of glomeruli, procimal and distal tubuli measured by urinary excretion of albumin, beta 2-microglobulin and THP were normal.

Adolescent↗

[Prevention and treatment of recurrent urinary system infection with estrogen cream in postmenopausal women].

OBJECTIVE: To evaluate the effect and feasibility of using estrogen cream for the prevention and treatment of recurrent urinary tract infection (UTI) in postmenopausal women. METHODS: Forty-five postmenopausal women with a history of recurrent UTI were divided into two groups (group premarin and group antibiotic). Participants were assigned to apply intravaginal premarin cream (group premarin, n = 30) or oral antibiotic (group antibiotic, n = 15) for 3 months respectively. Urine routine test, midstream urine and vaginal cultures, vaginal health score (VHS), vaginal cell maturation value (MV), endometrial thickness and blood estrogen level were obtained before and after the study. RESULTS: The incidence of UTI in the group premarin was significantly reduced as compared with that in the group antibiotic (2/27 vs. 12/15, P < 0.001). In the group premarin Lactobacilli reappeared (from 0 to 59.3%) and MV (from 9.2 +/- 6.8 to 74.6 +/- 14.1) and VHS (from 5.2 +/- 0.4 to 13.4 +/- 2.5) were improved after 3 months. There was no significant change in the group antibiotic. CONCLUSION: It seems that intravaginal use of estrogen cream would effectively prevent and reduce the UTI in postmenopausal women.

Aged↗

Uricult trio as a screening test for bacteriuria in pregnancy.

OBJECTIVE: To establish the effectiveness in an indigent urban population of Uricult Trio as a screening test for asymptomatic bacteriuria in pregnancy and in diagnosing urinary tract infections (UTI) in symptomatic pregnant women. Likelihood ratios were established for positive and negative Uricult Trio test results. SUBJECTS: Two populations of patients from the Pretoria region were involved: (i) asymptomatic pregnant women attending the antenatal clinic for the first time or presenting in labour; and (ii) pregnant women with symptoms suggestive of UTI. METHOD: A midstream urine specimen was collected from the two populations of patients, plated onto the Uricult Trio and sent to the laboratory for culture. RESULTS: The prevalence of asymptomatic bacteriuria in this population was 23%, and for women with symptoms suggestive of UTI, 29%. The likelihood ratios for a positive test were 1.8 and 1.5 for asymptomatic and symptomatic patients respectively. The likelihood ratios for a negative test were 0.35 and 0.44 for asymptomatic and symptomatic patients respectively. Escherichia coli was the causative agent in 36% of cases. CONCLUSION: Uricult Trio is not effective as a screening test for asymptomatic bacteriuria in pregnancy or for diagnosing UTIs in women with symptoms suggestive of infection.

Bacteriuria↗

[Urinary infections in patients with urologic complications after kidney transplantation].

BACKGROUND: Urinary tract infections (UTI) are the most frequent infectious complications after renal transplantation (Tx). We tried to analyse whether the urinary tract infection was one of the factors which participated in the lower allograft survival rates and in the reduced allograft function in urologically complicated (UC) patients. METHODS AND RESULTS: We observed 77 patients after Tx whom 42 had urinary fistula, 32 had urinary tract dilatation a 3 suffered from both complications. They were observed from January 1992 through December 1999. 100 patients without urological complications represented a control group (N). Obtained data was statistically evaluated using t-test, chi 2-test, correlation analysis. Graft and patient survival rates were assessed using the Kaplan-Meier method. We have found that UC patients after Tx had worse renal function compared with patients not suffering from this complications. Using Kaplan-Meier methods we have found that graft survival rate in patients with UC is significantly lower than that in the control group (5-year graft survival 0.6 vs 0.82, p < 0.01). On the other hand there were no differences in the 5-year patients survival rate between the followed groups of patients (0.74 vs 0.83). There was no significant correlation between predicted creatinine clearance and followed indicators of UTI--total time of positive urine bacterial cultivation, number of infectious periods and total time of antibiotic therapy. There were no significant differences in graft survival during 5 years between patients with UTI and control group. CONCLUSIONS: Our results suggest that patients with UC are at increased risk of urinary tract infection. Our findings are in keeping with the assumption that UTI in patients with UC do not significantly participate in the decreased level of graft function and in the shorter graft survival rates.

Dilatation, Pathologic↗