RESUMO
ABSTRACT Chronic kidney disease (CKD) represents one of today's main public health problems. Serum creatinine measurement and estimation of the glomerular filtration rate (GFR) are the main tools for evaluating renal function. There are several equations to estimate GFR, and CKD-EPI equation (Chronic Kidney Disease - Epidemiology) is the most recommended one. There are still some controversies regarding serum creatinine measurement and GFR estimation, since several factors can interfere in this process. An important recent change was the removal of the correction for race from the equations for estimating GFR, which overestimated kidney function, and consequently delayed the implementation of treatments such as dialysis and kidney transplantation. In this consensus document from the Brazilian Societies of Nephrology and Clinical Pathology and Laboratory Medicine, the main concepts related to the assessment of renal function are reviewed, as well as possible existing controversies and recommendations for estimating GFR in clinical practice.
RESUMO A doença renal crônica (DRC) representa um dos principais problemas de saúde pública da atualidade. A dosagem da creatinina sérica e a estimativa da taxa de filtração glomerular (TFG) são as principais ferramentas para avaliação da função renal. Para a estimativa da TFG, existem diversas equações, sendo a mais recomendada a CKD-EPI (Chronic Kidney Disease - Epidemiology). Existem ainda algumas controvérsias com relação à dosagem da creatinina sérica e da estimativa da TFG, uma vez que vários fatores podem interferir nesse processo. Uma importante mudança recente foi a retirada da correção por raça das equações para estimativa da TFG, que superestimavam a função renal, e consequentemente retardavam a implementação de tratamentos como diálise e transplante renal. Neste documento de consenso da Sociedade Brasileira de Nefrologia e Sociedade Brasileira de Patologia Clínica e Medicina Laboratorial são revisados os principais conceitos relacionados à avaliação da função renal, possíveis controvérsias existentes e recomendações para a estimativa da TFG na prática clínica.
RESUMO
INTRODUCTION: The spectrum of clinical presentation of Fabry disease (FD) in women is broad and challenging. The aim is to evaluate the effectiveness of an alternative screening method for FD in women. METHODS: A collaborative multicenter cross-sectional study to evaluate the sensitivity and specificity of the combination of two tests (α-GAL enzyme activity assay and lyso-GL3 assay) for the diagnosis of FD in women. We included women with chronic kidney disease (CKD) stages 3 to 5, receiving conservative treatment or on dialysis programs, from different nephrology services in Brazil. RESULTS: We evaluated 1874 patients that underwent blood collection for α-GAL and lyso-GL3 assays. Isolated decreased α-GAL enzyme activity was found in 64 patients (3.5%), while isolated increased lyso-GL3 levels were found in 67 patients (3.6%), with one patient presenting alterations in both tests. All cases with low α-GAL enzyme activity and/or increased lyso-GL3 levels underwent genetic analysis for FD variants (132 performed GLA genetic test). Low α-GAL enzyme activity had higher sensitivity and specificity to detect FD compared to the other measures (elevated lyso-GL3 alone or both altered). The negative predictive value (NPV) of α-GAL activity was 99%, and the positive predictive value (PPV) was 9.2%. For lyso-GL3 assay, the specificity was 99.7% and the PPV was 2.9%, therefore considered inferior to α-GAL assay. Both assays altered, had higher PPV (100%) and higher NPV (99.7%) considered the best method. We found 7 cases of GLA gene variants found, resulting in an initial prevalence of 0.37% for FD in this sample female population. CONCLUSION: This study contributes to the diagnostic value of the biomarkers α-GAL and lyso-GL3 in the context of FD in women with CKD. The combination of these biomarkers was an effective approach for the diagnosis of the disease, with high PPV and NPV.
Assuntos
Doença de Fabry , Glicolipídeos , Insuficiência Renal Crônica , Esfingolipídeos , alfa-Galactosidase , Humanos , Doença de Fabry/diagnóstico , Doença de Fabry/genética , Doença de Fabry/enzimologia , Feminino , Insuficiência Renal Crônica/diagnóstico , Insuficiência Renal Crônica/sangue , alfa-Galactosidase/genética , Pessoa de Meia-Idade , Estudos Transversais , Adulto , Glicolipídeos/sangue , Glicolipídeos/metabolismo , Esfingolipídeos/sangue , Brasil , Sensibilidade e Especificidade , Idoso , Programas de Rastreamento/métodosRESUMO
Chronic kidney disease (CKD) represents one of today's main public health problems. Serum creatinine measurement and estimation of the glomerular filtration rate (GFR) are the main tools for evaluating renal function. There are several equations to estimate GFR, and CKD-EPI equation (Chronic Kidney Disease - Epidemiology) is the most recommended one. There are still some controversies regarding serum creatinine measurement and GFR estimation, since several factors can interfere in this process. An important recent change was the removal of the correction for race from the equations for estimating GFR, which overestimated kidney function, and consequently delayed the implementation of treatments such as dialysis and kidney transplantation. In this consensus document from the Brazilian Societies of Nephrology and Clinical Pathology and Laboratory Medicine, the main concepts related to the assessment of renal function are reviewed, as well as possible existing controversies and recommendations for estimating GFR in clinical practice.
Assuntos
Nefrologia , Patologia Clínica , Insuficiência Renal Crônica , Humanos , Taxa de Filtração Glomerular , Creatinina , Brasil , Consenso , Diálise Renal , Insuficiência Renal Crônica/diagnóstico , Insuficiência Renal Crônica/terapiaRESUMO
OBJETIVO: estudar o uso de medicamentos por gestantes atendidas durante o pré-natal em unidades básicas do Sistema Único de Saúde (SUS) na cidade de Natal, rio Grande do Norte, Brasil. MÉTODOS: foram entrevistadas 610 grávidas, entre o primeiro e o terceiro trimestre de gestação, que compareceram para consulta pré-natal em unidades de saúde localizadas nos quatro distritos sanitários de Natal, entre maio e julho de 2006. Os dados foram coletados com entrevistas estruturadas, baseando-se em perguntas uso-orientadas e medicamento-orientadas. Os fármacos foram classificados de acordo com o Anatomical Therapeutic Chemical Classification System (ATC) e segundo critérios de risco para a gestação da Food and Drug Administration (FDA). Utilizou-se teste do chi2 para análise dos dados. RESULTADOS: eram utilizados 1.505 medicamentos, obtendo-se uma média de 2,4 drogas por mulher. O uso de pelo menos um fármaco na gravidez foi relatado por 86,6 por cento das gestantes. As classes mais utilizadas foram os antianêmicos (35,6 por cento dos medicamentos), analgésicos (24,9 por cento), drogas para distúrbios gastrintestinais (9,1 por cento) e vitaminas (7 por cento). De acordo com a classificação do FDA, dos medicamentos empregados 42,7 por cento pertencem a categoria A de risco; 27,1 por cento à categoria B, 29,3 por cento à categoria C; 0,3 à categoria D e nenhum à categoria X. Foram usados, no primeiro trimestre da gestação, 43,6 por cento dos fármacos. Observou-se maior uso de medicamentos quanto maior a escolaridade e a renda familiar da mulher. A automedicação ocorreu em 12,2 por cento dos medicamentos; esse índice foi maior no primeiro trimestre de gravidez e em gestantes de baixa escolaridade e multigestas. CONCLUSÕES: as gestantes de Natal estão sendo expostas a uma variedade de medicamentos, cuja segurança na gravidez ainda é incerta, o que exige prescrição criteriosa para evitar possíveis danos ao feto.
PURPOSE: to study the use of medicines by pregnant women during prenatal care in clinics of the national public health system in the city of Natal, Brazil. METHODS: a total of 610 pregnant women between the first and the third trimesters of pregnancy were interviewed in the public clinics of the four sanitary districts of Natal, from May to July 2006. The data were collected by a structured questionnaire, based in use-oriented and medicine-oriented questions. The drugs were classified according to the Anatomical Therapeutic Chemical Classification System (ATC), in agreement with the gestation risk criteria from the Food and Drugs Administration (FDA). The statistical analysis was made by the chi2 test. RESULTS: a total of 1,505 drugs were used, with an average of 2.4 medications per woman. The use of at least one drug was found in 86.6 percent of the women. The most frequently used drugs were anti-anemics (35.6 percent), analgesics (24.9 percent), drugs for gastrointestinal disorders (9.1 percent) and vitamins (7 percent). According to the FDA classification, 42.7 percent belonged to category A risk, 27.1 percent to category B, 29.3 percent to category C, 0.3 percent to category D and none to category X. The use of medicines during the first trimester of pregnancy amounted to 43.6 percent. The rate of drug use increased with higher schooling level and family income. Self-medication was found in 12.2 percent of the drug intake and this rate was higher in the first trimester of gestation and with women with low education level and previous gestations. CONCLUSIONS: pregnant women from Natal are being exposed to a variety of medicines with uncertain safety in pregnancy. Therefore, more careful prescription is needed, to avoid possible fetal damage.
Assuntos
Humanos , Feminino , Gravidez , Adulto , Uso de Medicamentos , Gravidez , Serviços de Saúde Materno-Infantil , Assistência Perinatal , Inquéritos e QuestionáriosRESUMO
PURPOSE: to study the use of medicines by pregnant women during prenatal care in clinics of the national public health system in the city of Natal, Brazil. METHODS: a total of 610 pregnant women between the first and the third trimesters of pregnancy were interviewed in the public clinics of the four sanitary districts of Natal, from May to July 2006. The data were collected by a structured questionnaire, based in use-oriented and medicine-oriented questions. The drugs were classified according to the Anatomical Therapeutic Chemical Classification System (ATC), in agreement with the gestation risk criteria from the Food and Drugs Administration (FDA). The statistical analysis was made by the chi2 test. RESULTS: a total of 1,505 drugs were used, with an average of 2.4 medications per woman. The use of at least one drug was found in 86.6% of the women. The most frequently used drugs were anti-anemics (35.6%), analgesics (24.9%), drugs for gastrointestinal disorders (9.1%) and vitamins (7%). According to the FDA classification, 42.7% belonged to category A risk, 27.1% to category B, 29.3% to category C, 0.3% to category D and none to category X. The use of medicines during the first trimester of pregnancy amounted to 43.6%. The rate of drug use increased with higher schooling level and family income. Self-medication was found in 12.2% of the drug intake and this rate was higher in the first trimester of gestation and with women with low education level and previous gestations. CONCLUSIONS: pregnant women from Natal are being exposed to a variety of medicines with uncertain safety in pregnancy. Therefore, more careful prescription is needed, to avoid possible fetal damage.