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1.
Epidemiol Serv Saude ; 31(3): e2022389, 2022.
Artigo em Inglês, Português | MEDLINE | ID: mdl-36542045

RESUMO

OBJECTIVE: to determine the rate of hospitalizations due to acute non-drug poisoning (NDP) events and to analyze mortality arising from these health conditions in Brazil from 2009 to 2018. METHODS: this was a time-series study using Prais-Winsten regression to analyze records of hospitalizations for "treatment of intoxication or poisoning due to exposure to non-drug substances" held on the Hospital Information System. RESULTS: there were 125,570 hospitalizations due to NDP. The average hospitalization rate was 6.3/100,000 inhabitants, although it was higher in males (8.0/100,000 inhab.) compared to females (4.6/100,000 inhab.). The hospitalization rate and the overall mortality rate due NDP to fell from 9.4 to 4.5/100,000 inhab. and from 2.5 to 1.6/1 million inhab., respectively. CONCLUSIONS: there was a reduction in the NDP hospitalization rate and in mortality due to NDP during the decade analyzed.


Assuntos
Sistemas de Informação Hospitalar , Hospitalização , Masculino , Feminino , Humanos , Brasil/epidemiologia
2.
J Endocr Soc ; 7(1): bvac171, 2022 Nov 17.
Artigo em Inglês | MEDLINE | ID: mdl-36518902

RESUMO

Context: There are few studies of 25-hydroxyvitamin D (25(OH)D) concentrations in healthy adults in Brazil. Objective: This work aimed to estimate the prevalence of vitamin D status and its association with lifestyle, sociodemographic, and anthropometric data in 3 regions of Brazil. Methods: A cross-sectional study was conducted among blood donors of both sexes, living in the cities of Salvador, São Paulo, and Curitiba during summer. Blood samples were collected during the procedure. Serum 25(OH)D and parathyroid hormone (PTH) were measured in the same laboratory using chemiluminescence immunoassays. Lifestyle, sociodemographic, and anthropometric data were gathered by an interview with a standardized questionnaire. Vitamin D deficiency and insufficiency was defined as 25(OH)D levels below 20 ng/mL and below 30 ng/mL, respectively. Results: A total of 1004 healthy adults were evaluated with mean levels of 25(OH)D (28.7 ± 9.27 ng/mL) and PTH (34.4 ± 15.1 pg/mL). The standardized prevalence of vitamin D deficiency and insufficiency was in the study population 15.3% and 50.9%: in Salvador 12.1% and 47.6%, in São Paulo 20.5%, and 52.4% and in Curitiba 12.7% and 52.1%, (P = .0004). PTH levels were negatively correlated with 25(OH)D levels. Greater body mass index (BMI) and higher latitude were significant predictors of vitamin D deficiency, whereas skin color (White), longer duration of sun exposure, and current use of dietary supplement were protective. Conclusion: This study confirmed the high prevalence of vitamin D deficiency and insufficiency even in the midsummer in a healthy population of Brazil. Vitamin D levels are associated with sun exposure, latitude, BMI, skin color, and use of supplements.

3.
Epidemiol. serv. saúde ; 31(3): e2022389, 2022. tab, graf
Artigo em Inglês, Português | LILACS | ID: biblio-1421403

RESUMO

Objetivo: determinar a taxa de internações por eventos agudos de intoxicação não medicamentosa (NMx) e analisar a mortalidade decorrente desses agravos no Brasil, de 2009 a 2018. Métodos: estudo de série temporal, no qual se analisaram registros de internações por "tratamento de intoxicação ou envenenamento por exposição a substâncias de uso não medicamentoso" no Sistema de Informações Hospitalares (SIH), por regressão de Prais-Winsten. Resultados: ocorreram 125.570 internações em virtude de intoxicação NMx. A taxa média de internações foi de 6,3/100 mil habitantes, sendo maior no sexo masculino (8,0/100 mil hab.) comparado ao feminino (4,6/100 mil hab.). A taxa de internações e a mortalidade geral de internações por intoxicação NMx diminuíram de 9,4 para 4,5/100 mil hab. e de 2,5 para 1,6/1 milhão de hab., respectivamente. Conclusões: houve redução da taxa de internações e da mortalidade por intoxicações NMx durante a década analisada.


Objetivo: determinar la tasa de hospitalizaciones por eventos agudos de intoxicación no medicamentosa (NMx) y analizar la mortalidad resultante en Brasil de 2009 a 2018. Métodos: estudio de serie temporal en el que se analizaron los registros de hospitalizaciones por "tratamiento de intoxicación o envenenamiento por exposición a sustancias de uso no farmacológico" del Sistema de Información Hospitalaria (SIH) por la regresión de Prais-Winsten. Resultados: hubo 125.570 hospitalizaciones por intoxicación NMx. La mortalidad promedio de hospitalizaciones fue de 6,3/100 mil hab., siendo más alta en el sexo masculino (8,0/100 mil hab.) en comparación con el femenino (4,6/100 mil hab.). La tasa de hospitalizaciones y la mortalidad global de las hospitalizaciones por NMx disminuyeron de 9,4 a 4,5 por 100 mil hab. y de 2,5 a 1,6 por 1 millón de hab., respectivamente. Conclusiones: hubo reducción en la tasa de hospitalizaciones y en la mortalidad por intoxicaciones NMx durante la década analizada.


Objective: to determine the rate of hospitalizations due to acute non-drug poisoning (NDP) events and to analyze mortality arising from these health conditions in Brazil from 2009 to 2018. Methods: this was a time-series study using Prais-Winsten regression to analyze records of hospitalizations for "treatment of intoxication or poisoning due to exposure to non-drug substances" held on the Hospital Information System. Results: there were 125,570 hospitalizations due to NDP. The average hospitalization rate was 6.3/100,000 inhabitants, although it was higher in males (8.0/100,000 inhab.) compared to females (4.6/100,000 inhab.). The hospitalization rate and the overall mortality rate due NDP to fell from 9.4 to 4.5/100,000 inhab. and from 2.5 to 1.6/1 million inhab., respectively. Conclusions: there was a reduction in the NDP hospitalization rate and in mortality due to NDP during the decade analyzed.


Assuntos
Humanos , Masculino , Feminino , Adulto , Pessoa de Meia-Idade , Idoso , Intoxicação/mortalidade , Intoxicação/epidemiologia , Hospitalização/estatística & dados numéricos , Toxicologia/estatística & dados numéricos , Brasil , Estudos de Séries Temporais
4.
Rev Saude Publica ; 55: 81, 2021.
Artigo em Inglês, Português | MEDLINE | ID: mdl-34910021

RESUMO

OBJECTIVE: To estimate the incidence of hospitalizations considering drug intoxication and the mortality of these diseases in Brazil, given trends from 2009 to 2018. METHODS: Data on hospital admissions and deaths come from DATASUS and demographic data from the Brazilian Institute of Geography and Statistics (IBGE). Hospital admissions with Autorização para Internação Hospitalar (AIH - Authorization for Hospital Admission) indicated as a procedure "treatment of intoxication or poisoning due to exposure to drugs and substances for non-drug use" were selected, with only cases of hospitalization due to drug intoxication being analyzed. The incidence of hospitalization and mortality were calculated separately for intoxications caused by medicamentos com prescrição (MRx - prescription drugs) and medicamentos isentos de prescrição (MIP - over-the-counter drugs). Rates were further stratified by sex, age group, and region of residence in Brazil. Trend analysis was performed by generalized linear regression using the Prais-Winsten method. RESULTS: MRx caused most hospitalizations (97%), with mortality approximately 50 times higher when compared to hospitalizations for MIP. The incidence trend in hospitalizations for MRx was stationary and mortality increased during the study period, whereas the trend in mortality and in the incidence of hospitalizations for MIP decreased. CONCLUSIONS: Hospitalizations for drug intoxication, especially those caused by MRx, have a great impact and importance on public health considering that prevention is possible.


Assuntos
Hospitalização , Medicamentos sem Prescrição , Brasil/epidemiologia , Humanos , Incidência , Prescrições
5.
Rev. saúde pública (Online) ; 55: 1-11, 2021. tab
Artigo em Inglês, Português | LILACS, BBO - Odontologia | ID: biblio-1352174

RESUMO

ABSTRACT OBJECTIVE: To estimate the incidence of hospitalizations considering drug intoxication and the mortality of these diseases in Brazil, given trends from 2009 to 2018. METHODS: Data on hospital admissions and deaths come from DATASUS and demographic data from the Brazilian Institute of Geography and Statistics (IBGE). Hospital admissions with Autorização para Internação Hospitalar (AIH - Authorization for Hospital Admission) indicated as a procedure "treatment of intoxication or poisoning due to exposure to drugs and substances for non-drug use" were selected, with only cases of hospitalization due to drug intoxication being analyzed. The incidence of hospitalization and mortality were calculated separately for intoxications caused by medicamentos com prescrição (MRx - prescription drugs) and medicamentos isentos de prescrição (MIP - over-the-counter drugs). Rates were further stratified by sex, age group, and region of residence in Brazil. Trend analysis was performed by generalized linear regression using the Prais-Winsten method. RESULTS: MRx caused most hospitalizations (97%), with mortality approximately 50 times higher when compared to hospitalizations for MIP. The incidence trend in hospitalizations for MRx was stationary and mortality increased during the study period, whereas the trend in mortality and in the incidence of hospitalizations for MIP decreased. CONCLUSIONS: Hospitalizations for drug intoxication, especially those caused by MRx, have a great impact and importance on public health considering that prevention is possible.


RESUMO OBJETIVO: Estimar a incidência de hospitalizações por intoxicação medicamentosa e a mortalidade desses agravos no Brasil, descrevendo as tendências de 2009 a 2018. MÉTODOS: Os dados de internações hospitalares e óbitos originam-se do DATASUS e os dados demográficos, do Instituto Brasileiro de Geografia e Estatística (IBGE). Foram selecionadas as internações hospitalares cuja Autorização para Internação Hospitalar (AIH) indicasse como procedimento "tratamento de intoxicação ou envenenamento por exposição a medicamento e substâncias de uso não medicamentoso", sendo analisados apenas os casos de hospitalização por intoxicação medicamentosa. A incidência de hospitalização e a mortalidade foram calculadas separadamente para intoxicações causadas por medicamentos com prescrição (MRx) e isentos de prescrição (MIP). As taxas foram ainda estratificadas por sexo, faixa etária e região de residência no Brasil. A análise de tendência foi realizada por regressão linear generalizada pelo método de Prais-Winsten. RESULTADOS: A maioria das internações foi causada por MRx (97%), com mortalidade aproximadamente 50 vezes maior, quando comparada às internações por MIP. A tendência da incidência das internações por MRx foi estacionária, mas a mortalidade aumentou durante o período estudado, enquanto a tendência na mortalidade e na incidência de internações por MIP foi decrescente. CONCLUSÕES: As internações por intoxicação medicamentosa, sobretudo aquelas causadas por MRx, têm grande impacto e importância na saúde pública, especialmente porque esses agravos podem ser prevenidos.


Assuntos
Humanos , Medicamentos sem Prescrição , Hospitalização , Brasil/epidemiologia , Incidência , Prescrições
6.
Sao Paulo Med J ; 138(1): 19-26, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32321101

RESUMO

BACKGROUND: Studies have shown that physical activity levels can be inversely associated with high-sensitivity C-reactive protein (hs-CRP) levels. However, the amount of physical activity required to maintain normal hs-CRP levels is still a matter for speculation. OBJECTIVE: To identify the amount of physical activity necessary to discriminate the hs-CRP levels in adults. DESIGN AND SETTING: Cross-sectional study at six teaching and research institutions. METHODS: The study sample comprised 10,231 adults aged 35 to 74 years who were participants in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil). Receiver operating characteristic (ROC) curves were constructed to compare the amount of physical activity in two domains (leisure time and commuting) with hs-CRP levels. The sensitivity and specificity were calculated to identify the best cutoff for physical activity level that would be needed to maintain normal levels of hs-CRP (< 3 mg/l). RESULTS: The area under the ROC curve was only statistically significant for discriminating normal levels of hs-CRP according to the amount of physical activity when the two study domains were added together. The accumulated physical activity level of 200 minutes/week was the best cutoff for discriminating normal levels of hs-CRP in adults of both sex. CONCLUSIONS: Physical activity in the leisure-time and commuting domains together, of duration 200 minutes/week, was associated with normal hs-CRP values.


Assuntos
Proteína C-Reativa , Exercício Físico , Adulto , Idoso , Biomarcadores , Brasil , Estudos Transversais , Humanos , Estudos Longitudinais , Pessoa de Meia-Idade
7.
São Paulo med. j ; São Paulo med. j;138(1): 19-26, Jan.-Feb. 2020. tab, graf
Artigo em Inglês | LILACS | ID: biblio-1099388

RESUMO

ABSTRACT BACKGROUND: Studies have shown that physical activity levels can be inversely associated with high-sensitivity C-reactive protein (hs-CRP) levels. However, the amount of physical activity required to maintain normal hs-CRP levels is still a matter for speculation. OBJECTIVE: To identify the amount of physical activity necessary to discriminate the hs-CRP levels in adults. DESIGN AND SETTING: Cross-sectional study at six teaching and research institutions. METHODS: The study sample comprised 10,231 adults aged 35 to 74 years who were participants in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil). Receiver operating characteristic (ROC) curves were constructed to compare the amount of physical activity in two domains (leisure time and commuting) with hs-CRP levels. The sensitivity and specificity were calculated to identify the best cutoff for physical activity level that would be needed to maintain normal levels of hs-CRP (< 3 mg/l). RESULTS: The area under the ROC curve was only statistically significant for discriminating normal levels of hs-CRP according to the amount of physical activity when the two study domains were added together. The accumulated physical activity level of 200 minutes/week was the best cutoff for discriminating normal levels of hs-CRP in adults of both sex. CONCLUSIONS: Physical activity in the leisure-time and commuting domains together, of duration 200 minutes/week, was associated with normal hs-CRP values.


Assuntos
Humanos , Adulto , Pessoa de Meia-Idade , Idoso , Proteína C-Reativa , Exercício Físico , Brasil , Biomarcadores , Estudos Transversais , Estudos Longitudinais
8.
PLoS One ; 13(11): e0206726, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30418980

RESUMO

BACKGROUND: The World Health Organization has recommended the introduction of HPV vaccines into national immunization programme (NIP), but vaccination coverage remains low worldwide. We assessed the coverage and the parental acceptance of female and male HPV vaccination in Brazil after its introduction into the NIP. METHODS: We conducted a random-digit-dial survey of parents in seven major Brazilian cities from July-2015 to October-2016. A knowledge, attitude and practices questionnaire was developed and validated by expert analysis, semantic analysis, and pre-testing. RESULTS: 826 out of 2,324 (35.5%) eligible parents completed the interview. Parental acceptance of the HPV vaccine for daughters and sons 18 years of age or less was high (92% and 86%, respectively). Parents refusing vaccination were less likely to know that: HPV is sexually transmitted and causes genital warts, HPV vaccination is more beneficial before sexual debut, and HPV vaccine reactions are minor, and they were more likely to believe HPV vaccination can cause severe adverse events. Parents accepting HPV vaccine for daughters but not forsons were more likely to ignore that the vaccine is recommended for boys. Attitudes associated with HPV vaccine acceptance included: general belief in vaccines, trust in the NIP and in the HPV vaccine efficacy. Among girls eligible for HPV vaccination through the NIP, 58.4% had received a two-dose scheme and 71.1% at least one dose. "No vaccination/missed vaccination at school" was the most common reason for missed HPV vaccination in theNIP. CONCLUSIONS: One year after introduction in the NIP, most parents surveyed in Brazil accepted HPV vaccination for their daughters and sons. Low coverage in the NIP seemed to be due to challenges in adolescent vaccine delivery and HPV vaccination barriers at health-care centers, rather than to vaccine refusal.


Assuntos
Programas de Imunização , Infecções por Papillomavirus/prevenção & controle , Vacinas contra Papillomavirus , Cobertura Vacinal , Recusa de Vacinação , Adulto , Brasil , Estudos Transversais , Atenção à Saúde , Feminino , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Masculino , Pessoa de Meia-Idade , Infecções por Papillomavirus/psicologia , Pais/psicologia , Aceitação pelo Paciente de Cuidados de Saúde/psicologia , Fatores Socioeconômicos , Recusa de Vacinação/psicologia , Adulto Jovem
9.
Sao Paulo Med J ; 135(4): 391-395, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-28767993

RESUMO

CONTEXT AND OBJECTIVE:: The Brazilian Longitudinal Study of Adult Health (ELSA-Brasil) was conducted among civil servants at six higher education institutions located in six Brazilian state capitals. The objective of this review was to identify the publications produced within the scope of ELSA-Brasil that analyzed the participants' physical activity. DESIGN AND SETTING:: Review study using baseline data from ELSA-Brasil. METHODS:: Narrative review of Brazilian studies on physical activity produced using data from ELSA-Brasil participants. RESULTS:: The prevalence of leisure-time physical activity (LTPA) among ELSA-Brasil participants was low (44.1% among men and 33.8% among women). The main factors associated were social (higher schooling and family income), environmental (living in places with conditions and opportunities for physical activity) and individual (not being obese, being retired, not smoking and positive perception of body image). The perception of facilities for walking in the neighborhood was positively associated with both LTPA and commuting-related physical activity. An active lifestyle was a protective factor against several cardiometa-bolic variables (hypertension, diabetes, lipid abnormalities and cardiovascular risk over the next 10 years). Comparison between LTPA and commuting-related physical activity showed that only LTPA had a protective effect against arterial hypertension. CONCLUSIONS:: The prevalence of physical activity among ELSA-Brasil participants was low. The main determinants were social, environmental and personal. LTPA had a greater protective efect on cardio-metabolic outcomes than did commuting-related physical activity.


Assuntos
Exercício Físico/fisiologia , Atividades de Lazer , Estilo de Vida , Brasil , Humanos , Estudos Longitudinais , Fatores Socioeconômicos
10.
São Paulo med. j ; São Paulo med. j;135(4): 391-395, July-Aug. 2017. tab
Artigo em Inglês | LILACS | ID: biblio-904092

RESUMO

ABSTRACT CONTEXT AND OBJECTIVE: The Brazilian Longitudinal Study of Adult Health (ELSA-Brasil) was conducted among civil servants at six higher education institutions located in six Brazilian state capitals. The objective of this review was to identify the publications produced within the scope of ELSA-Brasil that analyzed the participants' physical activity. DESIGN AND SETTING: Review study using baseline data from ELSA-Brasil. METHODS: Narrative review of Brazilian studies on physical activity produced using data from ELSA-Brasil participants. RESULTS: The prevalence of leisure-time physical activity (LTPA) among ELSA-Brasil participants was low (44.1% among men and 33.8% among women). The main factors associated were social (higher schooling and family income), environmental (living in places with conditions and opportunities for physical activity) and individual (not being obese, being retired, not smoking and positive perception of body image). The perception of facilities for walking in the neighborhood was positively associated with both LTPA and commuting-related physical activity. An active lifestyle was a protective factor against several cardiometa-bolic variables (hypertension, diabetes, lipid abnormalities and cardiovascular risk over the next 10 years). Comparison between LTPA and commuting-related physical activity showed that only LTPA had a protective effect against arterial hypertension. CONCLUSIONS: The prevalence of physical activity among ELSA-Brasil participants was low. The main determinants were social, environmental and personal. LTPA had a greater protective efect on cardio-metabolic outcomes than did commuting-related physical activity.


RESUMO CONTEXTO E OBJETIVO: O Estudo Longitudinal de Saúde do Adulto (ELSA-Brasil) é um estudo longitudinal com servidores públicos de seis instituições de nível superior localizadas em seis capitais brasileiras. O objetivo desta revisão foi identifcar as publicações realizadas no âmbito do ELSA-Brasil que tenham analisado a atividade física dos participantes. TIPO DE ESTUDO E LOCAL: Estudo de revisão com dados da linha de base do ELSA-Brasil. MÉTODOS: Revisão narrativa dos estudos sobre atividade física no Brasil produzidos com dados de participantes do ELSA-Brasil. RESULTADOS: A prevalência da atividade física no tempo livre (AFTL) em participantes do ELSA-Brasil foi baixa, (44,1% em homens e 33,8% em mulheres). Os principais fatores associados foram de ordem social (maior escolaridade e renda familiar), ambiental (viver em locais com condições e oportunidades para prática de atividade física) e individual (não ser obeso, ser aposentado/a, não ser tabagista, e ter percepção positiva da imagem corporal). A percepção de facilidades para caminhar na vizinhança foi positivamente associada tanto a AFTL quanto a atividade física no deslocamento (AFD). O estilo de vida ativo fsicamente foi fator de proteção para diversas variáveis cardiometabólicas (hipertensão arterial, diabetes, alterações lipídicas e risco cardiovascular nos próximos 10 anos). Após comparação entre AFTL e AFD, observou-se que apenas a AFTL apresenta efeito protetor para hipertensão arterial. CONCLUSÕES: A prevalência da atividade física em participantes do ELSA-Brasil foi baixa, os principais determinantes foram de ordem social, ambiental e pessoal. A AFTL apresentou maior efeito de proteção para desfechos cardiometabólicos do que a AFD.


Assuntos
Humanos , Exercício Físico/fisiologia , Atividades de Lazer , Estilo de Vida , Fatores Socioeconômicos , Brasil , Estudos Longitudinais
11.
J Am Heart Assoc ; 5(6)2016 06 13.
Artigo em Inglês | MEDLINE | ID: mdl-27412901

RESUMO

BACKGROUND: Although increasing effort has been devoted to the promotion of a healthy lifestyle such as leisure time physical activity for cardio-metabolic health, specific evidence supporting health policy remains sparse, particularly in those ethnically diverse populations where cardio-metabolic diseases are reaching epidemic proportion and yet are grossly understudied. METHODS AND RESULTS: We conducted a cross-sectional analysis of the baseline data from 10 585 participants aged 35 to 74 free of cardiovascular diseases in the Brazilian Longitudinal Study of Adult Health. Leisure time physical activity status was defined by the American Heart Association and the World Health Organization recommendations (≥150 min/week moderate activities or 75 min/week vigorous activities). In total, 1183 (21%) women and 1387 (29%) men were active. After accounting for covariates, the favorable effects of leisure time physical activity on cardio-metabolic parameters were evident. Specifically, the average blood pressure, heart rate, and Framingham Risk Score for cardiovascular diseases of the active were significantly lower within each sex. The ORs comparing the active versus the inactive women were 0.78 (95% CI: 0.66-0.92) for hypertension and 0.78 (95% CI: 0.65-0.93) for cardiovascular diseases in 10 years. Among men, the ORs were 0.75 (95% CI: 0.65-0.87) for hypertension and 0.73 (95% CI: 0.61-0.87) for diabetes. The 10-year risk of cardiovascular diseases was significantly lower among the active men with a 33% reduction (OR=0.67, 95% CI: 0.57-0.78). CONCLUSIONS: We observed beneficial effects of leisure time physical activity on cardio-metabolic health in this large Brazilian population that are consistent with studies in North America and Europe.


Assuntos
Doenças Cardiovasculares/epidemiologia , Exercício Físico/fisiologia , Atividades de Lazer , Doenças Metabólicas/epidemiologia , Adulto , Idoso , Pressão Sanguínea/fisiologia , Índice de Massa Corporal , Brasil/epidemiologia , Doenças Cardiovasculares/fisiopatologia , Escolaridade , Feminino , Estilo de Vida Saudável/fisiologia , Humanos , Renda , Estudos Longitudinais , Masculino , Doenças Metabólicas/fisiopatologia , Pessoa de Meia-Idade
12.
Acta amaz ; 42(3): 387-398, 2012. ilus, tab
Artigo em Português | VETINDEX | ID: biblio-1395964

RESUMO

O objetivo deste trabalho foi estudar as relações solo-relevo em uma topossequência de transição campo/floresta na região de Humaitá, AM. A área do estudo foi selecionada com base na representatividade regional e no grau de preservação do ambiente. O estudo foi realizado ao longo de um caminhamento que atravessou os diferentes pedoambientes, partindo do ambiente de campo natural até o ambiente de floresta. Esses pedoambientes foram identificados e delimitados conforme a curvatura do terreno, expressão dos padrões vegetacionais e características pedológicas. Foram abertas trincheiras nos diversos segmentos e os perfis foram caracterizados morfologicamente e coletados por horizonte. Foram realizadas análises físicas e químicas para caracterização e determinados SiO2 , Al 2 O3 e Fe2 O3 por ataque sulfúrico, óxidos de Fe "livres" com ditionito-citrato-bicarbonato e o ferro mal cristalizado com oxalato de amônio. Análises mineralógicas foram realizadas por difratometria de raios X. Os resultados sugerem que a variação dos solos na topossequência tem relação direta com a variação do relevo, que condiciona a drenagem e o nível do lençol freático.


The objective of this work was to study soil-relief relations in a grassland-forest transition, in the region of Humaitá, Amazonas State, Brazil. The study area was selected based on the criterion of regional representativity (most common landscape) and in the level of environmental preservation. The sample collection was carried out in a transect from the grassland towards the forest, and the different soil environments were identified and limited according relief position, vegetation patterns and soil characteristics. Soil profiles were morphologically characterized and samples collected from all horizons for physical and chemical analysis for normal profile characterization. including SiO2 , Al 2 O3 and Fe2 O3 extracted by H2 SO4 attack, free iron oxides by DCB extraction and poor crystalline iron oxides extracted by ammonium oxalate. Mineralogical analysis was also carried out by X-ray diffraction. The results suggest that soil variation in the landscape was directly related with the relief, which determines soil drainage and water table level.


Assuntos
Água Subterrânea , Características do Solo , Florestas , Ecossistema Amazônico , Pradaria , Fenômenos Químicos
13.
Diabetes Res Clin Pract ; 87(3): 407-14, 2010 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-20060190

RESUMO

AIMS: To determine the prevalence of inadequate glycemic control and its correlates in a large multicenter survey of Venezuelan patients with diabetes. METHODS: A cross-sectional study in a sample of adult patients with diabetes, attending health centers in Venezuela. Information about diabetes, current medications, complications, and diet were obtained by trained interviewers, using a standardized questionnaire. HbA(1c) was measured by high-performance liquid chromatography in a central laboratory. Patients with HbA(1c) >or=7% were considered to have inadequate glycemic control. RESULTS: Overall 4075 patients were surveyed, 349(8.6%) with type 1 diabetes (T1D) and 3726(91.4%) with type 2 diabetes(T2D). Subjects' mean age was 58 years, and 65% were female. The prevalence of inadequate glycemic control was 76%. Poor glycemic control was more common in T1D patients (87%) than in those with T2D(75%), p<10(-4). Satisfaction with current diabetes treatment was associated with improved glycemic control among non-insulin-treated patients with T2D, but gender, multi-professional care, and participation in a diabetes education program were not. CONCLUSIONS: Despite clinical evidence supporting tight control of diabetes, few diabetic patients in Venezuela met recommended glycemic control targets. This may contribute to increased rates of diabetic complications. Our findings support the public health message of implementation of early, aggressive management of diabetes.


Assuntos
Diabetes Mellitus Tipo 1/epidemiologia , Diabetes Mellitus Tipo 2/epidemiologia , Hemoglobinas Glicadas/metabolismo , Adulto , Fatores Etários , Distribuição de Qui-Quadrado , Cromatografia Líquida de Alta Pressão , Estudos Transversais , Diabetes Mellitus Tipo 1/tratamento farmacológico , Diabetes Mellitus Tipo 2/tratamento farmacológico , Feminino , Inquéritos Epidemiológicos , Humanos , Hipoglicemiantes/uso terapêutico , Insulina/uso terapêutico , Masculino , Pessoa de Meia-Idade , Educação de Pacientes como Assunto , Satisfação do Paciente , Prevalência , Autocuidado , Fatores Sexuais , Inquéritos e Questionários , Venezuela
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