Yttrium-90 radiosynovectomy in knees and ankles (25 joints in 22 hemophilic patients). Short-term results

ABSTRACT Introduction: The radiosynovectomy (RS) is one treatment option for recurrent hemarthrosis in patients with hemophilia (PWH). A prospective cohort study was designed to evaluate the effects of the RS on the synovial membrane volume in the ankles and knees of PWH and patient characteristics related to the RS outcome. Methods: In a one-year follow-up, 25 joints of 22 PWH who presented 3 bleeds or more in the same joint over the last 6 months (target joints) were subjected to the RS. Two groups were compared: those who retained target joints following the RS and those who did not (less than 3 bleeds/6 months after the RS). The groups were analyzed according to age, hemophilia type/severity, joint, body mass index (BMI), inhibitor and Hemophilia Joint Health Score 2.1 (HJHS). The magnetic resonance images (MRI) of six ankles and six knees were acquired prior to, and 6 months after, the RS. The synovial membrane volume and arthropathy MRI scale were accessed and volumes were compared and correlated with the Yttrium-90 dose injected. Results: Patients with a mean age of 12 years and a mean HJHS of 6.7 (p < 0.05) retained target joints after the RS. The inhibitor, joint, type/severity of disease and BMI showed no significant differences between groups. The synovial membrane volume had a significant reduction after the RS (p = 0.03), but no correlation with the Yttrium-90 dose. In proportion to the synovial membrane volume, doses injected to the ankles were larger than those injected to the knees. Conclusion: The synovial membrane volume is reduced after the RS, regardless of the effective 90Y dose.

Yttrium-90 radiosynovectomy in knees and ankles (25 joints in 22 hemophilic patients). Short-term results.

INTRODUCTION: The radiosynovectomy (RS) is one treatment option for recurrent hemarthrosis in patients with hemophilia (PWH). A prospective cohort study was designed to evaluate the effects of the RS on the synovial membrane volume in the ankles and knees of PWH and patient characteristics related to the RS outcome. METHODS: In a one-year follow-up, 25 joints of 22 PWH who presented 3 bleeds or more in the same joint over the last 6 months (target joints) were subjected to the RS. Two groups were compared: those who retained target joints following the RS and those who did not (less than 3 bleeds/6 months after the RS). The groups were analyzed according to age, hemophilia type/severity, joint, body mass index (BMI), inhibitor and Hemophilia Joint Health Score 2.1 (HJHS). The magnetic resonance images (MRI) of six ankles and six knees were acquired prior to, and 6 months after, the RS. The synovial membrane volume and arthropathy MRI scale were accessed and volumes were compared and correlated with the Yttrium-90 dose injected. RESULTS: Patients with a mean age of 12 years and a mean HJHS of 6.7 (p < 0.05) retained target joints after the RS. The inhibitor, joint, type/severity of disease and BMI showed no significant differences between groups. The synovial membrane volume had a significant reduction after the RS (p = 0.03), but no correlation with the Yttrium-90 dose. In proportion to the synovial membrane volume, doses injected to the ankles were larger than those injected to the knees. CONCLUSION: The synovial membrane volume is reduced after the RS, regardless of the effective 90Y dose.

Prevalência de acidentes de trânsito auto-referidos em Rio Branco, Acre / Prevalence of self-reported traffic accidents in Rio Branco, Northern Brazil / Prevalencia de accidentes de tránsito auto-referidos en Rio Branco, Norte de Brasil

OBJETIVO: Estimar a prevalência de acidentes de trânsito auto-referidos e identificar fatores associados. MÉTODOS: Estudo transversal de base populacional realizado de setembro de 2007 a agosto de 2008, nas zonas urbana e rural de Rio Branco, AC. Foram analisados dados referentes aos adultos (18 a 96 anos, n = 1.516) do inquérito Saúde e Nutrição de Adultos e Crianças de Rio Branco, obtidos em entrevistas domiciliares. As relações entre acidente de trânsito auto-referido e variáveis socioeconômicas e comportamentais foram analisadas por meio de razões de prevalência e intervalos de 95 por cento de confiança; foi efetuada análise de regressão múltipla de Poisson. RESULTADOS: A prevalência de acidente de trânsito auto-referido foi de 36 por cento. Na análise de Poisson, os indivíduos do sexo masculino (RP=1,45 e IC95 por cento: 1,12;1,87), que relatavam consumo de bebida alcoólica (RP=1,25 e IC95 por cento: 0,97;1,62), com renda acima de cinco salários mínimos (RP=1,88 e IC95 por cento: 1,25;2,83), idade entre 18 e 25 anos (RP=1,45 e IC95 por cento: 1,02;2,05) apresentaram maior probabilidade de referir envolvimento em acidente de trânsito. As variáveis idade e escolaridade mostraram associação inversa com o desfecho, enquanto renda apresentou associação positiva, todas elas com tendência significativa. CONCLUSÕES: A prevalência dos acidentes de trânsito auto-referidos aponta risco mais elevado para homens, com renda mais elevada, menor escolaridade e que ingerem bebida alcoólica, os quais devem ser alvo das campanhas preventivas.

OBJECTIVE: To estimate the prevalence of self-reported traffic accidents and identify associated factors. METHODS: Cross-sectional, population-based study carried out from September 2007 to August 2008, in the urban and rural zones of Rio Branco (Northern Brazil). Data referring to adults (aged 18 to 96 years, n = 1,516) of the inquiry Health and Nutrition of Adults and Children of Rio Branco, obtained in home interviews, were analyzed. The relations between self-reported traffic accident and socioeconomic and behavior variables were analyzed by means of prevalence ratios and 95 percent confidence intervals; Poisson regression analysis was performed. RESULTS: The prevalence of self-reported traffic accident was 36 percent. In the Poisson analysis, male individuals (PR= 1.45 and 95 percent CI: 1.12;1.87) who reported alcohol consumption (PR= 1.25 and 95 percentCI: 0.97;1.62), with income above five minimum wages (PR= 1.88 and 95 percentCI: 1.25;2.83), aged between 18 and 25 years (PR= 1.45 and 95 percentCI: 1.02;2.05), presented higher probability of reporting involvement in traffic accidents. The variables age and level of schooling had inverse association with the outcome, while income had a positive association, all of them with significant tendency. CONCLUSIONS: The prevalence of self-reported traffic accidents shows higher risk for men with higher income, lower level of schooling and who ingest alcoholic beverages. They should be the target of prevention campaigns.

OBJETIVO: Estimar la prevalencia de accidentes de tránsito auto-referidos e identificar factores asociados. MÉTODOS: Estudio transversal de base poblacional realizado de septiembre de 2007 a agosto de 2008, en las zonas urbana y rural de Rio Branco, Norte de Brasil. Se analizaron datos referentes a los adultos (18 a 96 años, n=1.516) de la Pesquisa Salud y Nutrición de Adultos y Niños de Rio Branco, obtenidos en entrevistas domiciliares. Las relaciones entre accidente de tránsito auto-referido y variables socioeconómicas y conductuales fueron analizadas por medio de tasas de prevalencia e intervalos de 95 por ciento de confianza. El análisis multivariado fue efectuado por medio de la regresión de Poisson. RESULTADOS: La prevalencia de accidente de tránsito auto-referido fue de 36 por ciento. En el análisis multivariado, los individuos del sexo masculino (RP 1,45 e IC95 por ciento: 1,12;1,87), que relataban consumo de bebida alcohólica (RP 1,25 e IC95 por ciento: 0,97;1,62), con renta superior a cinco salarios mínimos (RP 1,88 e IC95 por ciento: 1,25;2,83), edad entre 18 y 25 años (RP 1,45 e IC95 por ciento: 1,02;2,05) presentaron mayor probabilidad de referir envolvimiento en accidente de tránsito. Las variables edad y escolaridad mostraron asociación inversa con el resultado, mientras que renta presentó asociación positiva, todas ellas con tendencia significativa. CONCLUSIONES: La prevalencia de los accidentes de tránsito auto-referidos, señalan riesgo más elevado para hombres, con renta más elevada, menor escolaridad y que ingieren bebida alcohólica, siendo ellos el blanco de las campañas preventivas.

Prevalence of self-reported traffic accidents in Rio Branco, Northern Brazil.

OBJECTIVE: To estimate the prevalence of self-reported traffic accidents and identify associated factors. METHODS: Cross-sectional, population-based study carried out from September 2007 to August 2008, in the urban and rural zones of Rio Branco (Northern Brazil). Data referring to adults (aged 18 to 96 years, n = 1,516) of the inquiry Health and Nutrition of Adults and Children of Rio Branco, obtained in home interviews, were analyzed. The relations between self-reported traffic accident and socioeconomic and behavior variables were analyzed by means of prevalence ratios and 95% confidence intervals; Poisson regression analysis was performed. RESULTS: The prevalence of self-reported traffic accident was 36%. In the Poisson analysis, male individuals (PR= 1.45 and 95% CI: 1.12;1.87) who reported alcohol consumption (PR= 1.25 and 95%CI: 0.97;1.62), with income above five minimum wages (PR= 1.88 and 95%CI: 1.25;2.83), aged between 18 and 25 years (PR= 1.45 and 95%CI: 1.02;2.05), presented higher probability of reporting involvement in traffic accidents. The variables age and level of schooling had inverse association with the outcome, while income had a positive association, all of them with significant tendency. CONCLUSIONS: The prevalence of self-reported traffic accidents shows higher risk for men with higher income, lower level of schooling and who ingest alcoholic beverages. They should be the target of prevention campaigns.