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      Complicações perinatais em gestantes com e sem vaginose bacteriana Translated title: Perinatal complications in pregnant women with and without bacterial vaginosis

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          Abstract

          Objetivos:comparar a freqüência de trabalho de parto prematuro (TPP), prematuridade, rotura prematura de membranas (RPM) e RN de baixo peso (< 2.500 g) em gestantes com Vaginose Bacteriana (VB). Verificar a validade da investigação rotineira de VB durante o pré-natal. Métodos:foram estudadas 217 mulheres com idade gestacional entre 28 e 32 semanas (35 com VB e 182 sem VB). O diagnóstico de VB foi realizado por meio dos critérios clínicos de Amsel. Os dados foram analisados através do teste de chi² , exato de Fisher, Mann-Whitney e Risco Relativo. Resultados:as incidências de TPP, prematuridade, RPM e baixo-peso ao nascimento foram maiores no grupo de gestantes com VB do que no grupo-controle (29,4% vs 3,8%; 28,6% vs 3,3%; 22,9% vs 10,4%; 20,0% vs 3,3%, respectivamente). As médias da idade gestacional e do peso ao nascer foram significativamente menores nos recém-nascidos das mães portadoras de VB (265,8 dias vs 279,9 dias; 2.958 g vs 3.294 g, respectivamente). Conclusões:todas as complicações perinatais estudadas estiveram significativamente associadas com a presença de VB não-tratada durante a gestação. Portanto, sugerimos que se deve incluir o diagnóstico e o tratamento adequados da VB na rotina de atendimento pré-natal nos serviços de obstetrícia, pois tal medida poderá ser efetiva na redução destas complicações perinatais.

          Translated abstract

          Purpose:to compare the incidence of preterm labor and birth, premature rupture of membranes (PROM) and low birth-weight newborns (< 2,500 g) between two groups of pregnant women (with or without BV). To verify the adequacy of including a regular prenatal BV investigation. Methods:a total of 217 women between 28 and 32 weeks of pregnancy (35 with BV and 182 without BV) were studied. The diagnosis of BV was established according to Amsel's criteria. The data were analyzed by the chi² test, Fisher's test, Mann-Whitney test and the relative risk. Results:the incidence of preterm labor, preterm birth, PROM and low birth-weight was statistically higher in the group of women with BV than in the control group (29.4% vs. 3.8%; 28.6% vs. 3.3%; 22.9% vs. 10.4%; 20.0% vs. 3.3%; respectively). The means of gestational age and birth-weight were significantly lower in the newborns from mothers with BV (265.8 days vs. 279.9 days; 2,958 g vs. 3,294 g, respectively). Conclusion:all perinatal complications studied were significantly associated with the presence of untreated BV during pregnancy. Therefore, the diagnosis and adequate treatment should be included in the routine prenatal assistance at Brazilian Obstetrics Services. Such measure may be effective in the reduction of these perinatal complications.

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          Most cited references15

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          Nonspecific vaginitis. Diagnostic criteria and microbial and epidemiologic associations.

          Numerous previous studies of nonspecific vaginitis have yielded contradictory results regarding its cause and clinical manifestations, due to a lack of uniform case definition and laboratory methods. We studied 397 consecutive unselected female university students and applied sets of well defined criteria to distinguish nonspecific vaginitis from other forms of vaginitis and from normal findings. Using such criteria, we diagnosed nonspecific vaginitis in up to 25 percent of our study population; asymptomatic disease was recognized in more than 50 percent of those with nonspecific vaginitis. A clinical diagnosis of nonspecific vaginitis, based on simple office procedures, was correlated with both the presence and the concentration of Gardnerella vaginalis (Hemophilus vaginalis) in vaginal discharge, and with characteristic biochemical findings in vaginal discharge. Nonspecific vaginitis was also correlated with a history of sexual activity, a history of previous trichomoniasis, current use of nonbarrier contraceptive methods, and, particularly, use of an intrauterine device. G. vaginalis was isolated from 51.3 percent of the total population using a highly selective medium that detected the organism in lower concentration in vaginal discharge than did previously used media. Practical diagnostic criteria for standard clinical use are proposed. Application of such criteria should assist in clinical management of nonspecific vaginitis and in further study of the microbiologic and biochemical correlates and the pathogenesis of this mild but quite prevalent disease.
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            Abnormal bacterial colonisation of the genital tract and subsequent preterm delivery and late miscarriage.

            To find out whether women with bacterial vaginosis detected early in pregnancy are at increased risk of preterm delivery. Prospective description cohort study. Antenatal clinic in a district general hospital. 783 women examined during their first antenatal clinic visit and screened for recognised risk factors for preterm delivery and the presence of bacterial vaginosis or intermediate abnormal flora detected by examination of a vaginal smear stained by Gram's method. Gestational age at delivery classified as late miscarriage (16-24 weeks' gestation), preterm delivery (24-37 weeks' gestation), term delivery (> or = 37 weeks' gestation). Multiple logistic analysis showed that there was an increased incidence of preterm delivery in women with a previous preterm delivery (9/24; odds ratio 25; 95% confidence interval 9 to 70; P < 0.001) and bacterial vaginosis (9/115; 2.8; 1.1 to 7.4; P = 0.04). A further logistic analysis of data from women recruited before 16 weeks' gestation showed that preterm deliveries or late miscarriages occurred more often in women with bacterial vaginosis (12/77; 5.5; 2.3 to 13.3; P < 0.001). Late miscarriage and preterm delivery are associated with the presence of bacterial vaginosis in early pregnancy. This is independent of recognised risk factors such as previous preterm delivery.
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              Risk factors for prematurity and premature rupture of membranes: a prospective study of the vaginal flora in pregnancy.

              Prematurity remains a major cause of perinatal mortality in the United States. Some research has indicated that infectious agents play a role in either initiating preterm labor, causing premature rupture of the membranes, or preventing tocolysis. This study attempted to determine if the presence of various vaginal pathogens in early pregnancy was associated with the subsequent development of premature rupture of membranes or preterm labor. We found that among 233 evaluable patients those with Trichomonas vaginalis were significantly more likely to have premature rupture of the membranes (p less than 0.03), and those with Bacteroides sp. were more likely to be delivered of their infants before 37 weeks (p less than 0.03) and to have infants weighing less than 2500 gm (p less than 0.05). Those with Ureaplasma urealyticum more frequently began preterm labor (p less than 0.05). Preterm premature rupture of the membranes was found significantly more often among patients with Bacteroides sp. Stepwise multiple logistic regression analysis indicated that those associations were not related to the number of previous abortions, deliveries, or preterm deliveries or to maternal age. We conclude that microbiologic screening in early pregnancy may aid in the assessment of patient risk for preterm delivery.
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                Author and article information

                Journal
                rbgo
                Revista Brasileira de Ginecologia e Obstetrícia
                Rev. Bras. Ginecol. Obstet.
                Federação Brasileira das Sociedades de Ginecologia e Obstetrícia (Rio de Janeiro, RJ, Brazil )
                0100-7203
                1806-9339
                September 1998
                : 20
                : 8
                : 437-441
                Affiliations
                [01] Campinas SP orgnameUnicamp orgdiv1Faculdade de Ciências Médicas orgdiv2Departamento de Tocoginecologia
                Article
                S0100-72031998000800002 S0100-7203(98)02000802
                10.1590/S0100-72031998000800002
                cc05b333-1ac9-4b49-8d28-95eb3ee8e422

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

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                Figures: 0, Tables: 0, Equations: 0, References: 15, Pages: 5
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                SciELO Brazil

                Categories
                Trabalhos Originais

                Pregnancy complications,Premature rupture of membranes,Vulvovaginite,Prematuridade,Complicações da gravidez,Infecções,Rutura prematura de membranas,Prematurity,Bacterial vaginosis,Vulvovaginitis

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