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OBJETIVO: descrever a etiologia, evolução e prevalência de hidropisia fetal em coorte de gestantes em 10 anos de acompanhamento (1992 a 2002), em uma maternidade terciária. MÉTODOS: estudo retrospectivo foi realizado em pacientes referidas para a maternidade do Instituto Fernandes Figueira com o diagnóstico de hidropisia fetal, detectado pelo exame de ultra-sonografia, durante o período compreendido entre 1992 e 2002. Os casos foram selecionados quanto à etiologia (imune ou não-imune), sendo comparados quanto à evolução, procedimentos invasivos realizados e sobrevivência. A análise das variáveis foi realizada por meio do programa Epi-Info 6.0, sendo considerado valor de significância estatística um valor de pPURPOSE: to describe etiology, evolution and prevalence of hydrops fetalis in a cohort of pregnant women during a period of ten years (1992 to 2002) in a tertiary maternity. METHODS: a retrospective study was carried out in patients referred to the maternity of the Fernandes Figueira Institute, with diagnosis of hydrops fetalis, detected by ultrasonography, during the period from 1992 to 2002. The cases were selected according to etiology (immune or nonimmune) and evolution, performed invasive procedures and survival were compared between both groups. Analysis of variables was performed by Epi-Info 6.0 and a p value less than 0.05 was considered to be statistical significant. RESULTS: in ten years of follow-up, 80 patients with an initial diagnosis of hydrops were attended. The frequency of hydrops in this population was 1 in 157 live births. Rh immunization (immune group) was detected in 13 cases (16.2%), and for 67 cases (83.8%) nonimmune causes (nonimmune group) were considered. Major causes of nonimmune hydrops fetalis were idiopathic (40.2%), genetic (20.8%), infectious diseases (20.7%), and cardiopathy (7.4%). A difference was found in relation to maternal age in the immune group (mean = 32.8 years) when compared with the nonimmune group (mean = 28.7 years) (p=0.03), but gestational age at delivery was similar in both groups (mean = 33.6 weeks in the immune group and 33.1 weeks in the nonimmune group) (p=0.66). Amniocentesis and blood transfusion in utero were carried out more frequently in the immune group (p

Com o objetivo de medir a prevalência de anticorpos IgG contra o parvovírus B19 em gestantes com até 24 semanas de idade gestacional e detectar a ocorrência de casos de hidropisia fetal não-imune atribuídos a esse vírus, coletamos 249 amostras de soro em uma maternidade de referência na cidade do Rio de Janeiro, entre junho de 2003 e março de 2005. As gestantes foram acompanhadas até o termo da gestação, sendo detectados 17 casos de hidropisia fetal. Quatro casos foram atribuídos ao parvovírus B19 e dois destes ocorreram em gestantes residentes na zona oeste da cidade, em fevereiro de 2005. Resultados positivos para anticorpos IgG antiparvovírus B19 foram encontrados em 172 (71,6%) gestantes (IC 95% 65,5-77,7%), sendo esta prevalência de anticorpos comparável à encontrada em outras cidades brasileiras. A única variável associada com aquisição prévia de anticorpos IgG foi número de gestações anteriores maior que um(p= 0,02, IC 95% 0,36-0,94).With the aim of measuring the prevalence of anti-parvovirus B19 IgG antibodies during pregnancy up to 24 weeks of gestation and detecting cases of nonimmune hydrops fetalis, 249 sera from pregnant women attending a reference hospital in Rio de Janeiro city, from June 2003 to November 2004 were collected. They were followed-up until the end of pregnancy, with 17 cases of fetal hydrops detected. Four cases were caused by parvovirus B19 and two of them occurred in pregnant women living in the western zone of the city, during February 2005. Anti-parvovirus B19 IgG antibodies were found in 172 (71.6%) pregnant women (CI 95% 65.5%-77.7%); this antibody prevalence is similar to results found for others Brazilian cities. The only variable associated with previous acquisition of IgG antibodies to parvovirus B19 was number of pregnancies greater than one (p= 0.02, CI 95% 0.36-0.94).