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      Fatores associados à bacteriúria após sondagem vesical na cirurgia ginecológica Translated title: Factors associated with bacteriuria after indwelling urethral catheterization in gynecologic surgery

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          Abstract

          OBJETIVOS: Determinar a frequência e os principais fatores associados à bacteriúria após a sondagem vesical em mulheres submetidas à cirurgia ginecológica eletiva. MÉTODOS: Realizou-se um estudo do tipo coorte em mulheres submetidas à cirurgia ginecológica após sondagem vesical no Instituto de Medicina Integral Prof. Fernando Figueira, no período de janeiro a maio de 2007. As uroculturas foram coletadas até 24 horas após a retirada da sonda e 7/10 dias após a sondagem vesical. A análise estatística bivariada e multivariada foi realizada calculando-se a razão de risco e os seus intervalos de confiança a 95%. RESULTADOS: Foram incluídas no estudo 249 mulheres. A frequência de uroculturas positivas até 24 horas depois da retirada da sonda foi de 23,6%, diminuindo para 11,1% 7/10 dias após a sondagem. Destas, apenas 2,4% eram sintomáticas. Verificou-se menor risco de bacteriúria com 7/10 dias após a sondagem vesical quando a paciente referiu vulvovaginite tratada nos últimos três meses, não permanecendo estatisticamente significativa após a análise multivariada. Não houve associação significativa com idade, escolaridade, número de gestações, paridade, fase da vida reprodutiva, tipo e duração da cirurgia, tipo da anestesia, uso de antibiótico profilático, profissional que colocou a sonda e o tempo de permanência da sonda vesical. CONCLUSÃO: A frequência de bacteriúria foi de 23,6% e 11,1% com 24 horas e 7/10 dias, respectivamente. Não se encontrou associação significativa das variáveis pesquisadas com a bacteriúria evidenciada na urocultura com 7/10 dias.

          Translated abstract

          OBJECTIVES: To determine the frequency and risk factors associated to bacteriuria after urinary catheterization in women submitted to elective gynecological surgery. METHODS: A cohort study was carried out among women submitted to gynecological surgery after urinary catheterization. This study took place at the "Instituto de Medicina Integral Professor Fernando Figueira" from January to May of 2007. Uroculture samples were collected during two periods: in the first 24 hours and seven to ten days after catheter removal. To demonstrate the association between risk factors and bacteriuria, the relative risk was calculated with a confidence interval of 95%. RESULTS: This study included 249 women. At 24 hours after catheter removal, 23.6% of the urocultures collected were positive, while on days 7 to 10 this was reduced to 11.1%. Of all participants studied only 2.4% had symptomatic bacteriuria. Risk of bacteriuria at 7/10 days was reduced when the patient reported a positive history of treatment for vulvovaginitis in the previous three months. However this association was not found after multivariate analysis. There was no significant association with age, education, stage of reproductive phase, number of pregnancies and deliveries, type and duration of surgery, type of anesthetics, use of prophylactic antibiotic, professional who introduced the catheter and time of urinary catheterization. CONCLUSION: Frequency of bacteriruria was 23.6% at 24 hours and 11.1% seven days after catheter removal. There was no association between bacteriuria at 7/10 days and any of the variables analyzed.

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          Most cited references34

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          Catheter-associated urinary tract infection is rarely symptomatic: a prospective study of 1,497 catheterized patients.

          Catheter-associated urinary tract infection (CAUTI) is the most common nosocomial infection, accounting for more than 1 million cases each year in US hospitals and nursing homes. To define the clinical features of CAUTI. A university hospital; 1,497 newly catheterized patients. Every day that the catheter was in place, a quantitative urine culture and urine leukocyte count were obtained, and the patient was queried by a research worker regarding symptoms. To more precisely define the role of CAUTI in patients' symptoms, a subset of 1,034 patients, 89 of whom developed CAUTI with more than 10(3) colony-forming units per milliliter, who did not have another potentially confounding site of infection besides the urinary tract, was analyzed. Presence of fever, symptoms commonly associated with community-acquired urinary tract infection, and peripheral leukocytosis. There were 235 new cases of nosocomial CAUTI during the study period. More than 90% of the infected patients were asymptomatic; only 123 infections (52%) were detected by patients' physicians using the hospital laboratory. In the subset analysis, there were no significant differences between patients with and without CAUTI in signs or symptoms commonly associated with urinary tract infection-fever, dysuria, urgency, or flank pain-or in leukocytosis. Only 1 of the 235 episodes of CAUTI that were prospectively studied was unequivocally associated with secondary bloodstream infection. Whereas CAUTIs are a major reservoir of antibiotic-resistant organisms in the hospital, they are rarely symptomatic and infrequently cause bloodstream infection. Symptoms referable to the urinary tract, fever, or peripheral leukocytosis have little predictive value for the diagnosis of CAUTI.
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            Community-onset urinary tract infections: a population-based assessment.

            Although multiple studies have investigated community-onset urinary tract infections (UTI), population-based data are lacking. We therefore conducted population-based laboratory surveillance in order to define the incidence, demographic risk factors, etiology, and antimicrobial susceptibilities of community onset UTI in a large Canadian region. Laboratory surveillance for all community onset UTIs among residents of the Calgary Health Region (population approximately 1.2 million) was conducted during 2004/2005. Repeated positive samples within a 1-month period and those infections first cultured more than 2 days after admission to a hospital were excluded. A total of 40,618 episodes of community onset UTI occurred among 30,851 residents for an overall annual incidence of 17.5 per 1,000. Seventy-four percent of the cultures were submitted from ambulatory patients, 18% from hospitalized patients within the first 2 days of admission, and 9% from nursing home residents. Females were at significantly increased risk as compared to males (30.0 vs 5.0 per 1,000, RR 5.98; 95% CI, 5.81-6.15; p < 0.0001) as were the very young and very old. The most common infecting organisms were Escherichia coli (70%), Klebsiella pneumoniae (7%) and Enterococcus species (6%). Overall resistance rates among first isolates per patient tested were 14% for trimethoprim/sulfamethoxazole, 8% for cefazolin, 7% for nitrofurantoin, 6% for ciprofloxacin, 4% for gentamicin, and 2% for ceftriaxone although rates differed significantly based on sending location and patient age. This study provides novel information on the epidemiology of community-onset UTIs in a non-selected Canadian population. The occurrence, etiology, and resistance rates of community onset UTI differ significantly among definable population groups.
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              Materials for urinary catheters: a review of their history and development in the UK.

              The Foley catheter, introduced in the mid-1930s and originally manufactured from latex, is still the most commonly used device for the management of urinary incontinence (UI). Despite the passage of time, there are still problems associated with the use of these devices. It is currently estimated that the management and treatment of UI costs the UK National Health Service (NHS) in the order of 500 million pound per annum. Faced with the known demographic changes in the adult population these costs will continue to rise for the foreseeable future. This review examines the range of materials currently used to manufacture Foley catheters from both latex and silicone. It outlines the common problems associated with their clinical use-infection, encrustation and blockage. The main changes that have been made to the materials employed in response to these problems are analysed. In the first instance the use of controlled release glass and slow release polymers to introduce disinfectants and antibacterial agents is considered. Attempts to alter surface properties by using coatings based on silver, polytetrafluoroethylene (PTFE), hydrogels and silicone are then described. It can be seen that despite these approaches, problems remain with the design and materials currently used to manufacture catheters. The review concludes that changes to the materials currently used for the manufacture of commercially available catheters could potentially alleviate many of the existing problems. However, standards need to be developed in order to enable direct comparison of the mechanical and physical properties of existing and potential catheter designs to ensure their effective function in-service.
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                Author and article information

                Journal
                ramb
                Revista da Associação Médica Brasileira
                Rev. Assoc. Med. Bras.
                Associação Médica Brasileira (São Paulo, SP, Brazil )
                0104-4230
                1806-9282
                2009
                : 55
                : 2
                : 181-187
                Affiliations
                [01] Paraíba PB orgnameUniversidade de Campina Grande
                [02] Recife PE orgnameInstituto de Medicina Integral Prof. Fernando Figueira
                [03] orgnameInstituto de Medicina Integral Professor Fernando Figueira
                [04] Recife PE orgnameUniversidade Federal de Pernambuco Brasil
                Article
                S0104-42302009000200023 S0104-4230(09)05500223
                cef28c3b-271c-4215-adae-6a1040435253

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 23 June 2008
                : 21 February 2008
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 34, Pages: 7
                Product

                SciELO Brazil

                Categories
                Artigos Originais

                Bacteriúria,Urina,Cross infection,Urinary tract infections,Infecção hospitalar,Cirurgia,Cateterismo urinário,Infecções urinárias,Urine,Bacteriuria,Surgery,Urinary catheterization

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