RESUMO
OBJECTIVE: To determine the prevalence of hypomagnesemia in diabetic children during diabetic ketoacidosis and following restitution of acid-base balance. METHODS: Eight consecutive diabetic children, ranging in age from 8 to 16 years, hospitalized in the pediatric intensive care unit with diabetic ketoacidosis from October 1st. through December 31st, 1995. A control group of 33 metabolically stable diabetic children, and a control group of 30 healthy children. Both control groups were similar in composition regarding age and sex to the study group. None of the patients in the study group and none of the controls had Magnesium supplementation given to them during the study period. MEASUREMENTS: Total serum Magnesium concentrations were measured from peripheral venous blood in all 71 patients. For the study group serum Magnesium was determined in a serial fashion: 1. upon admission in diabetic ketoacidosis 2. 24 hours after admission 3. 72 hours after admission RESULTS: The prevalence of hypomagnesemia was 62.4 in patients with diabetic ketoacidosis, (Group 1), 25 in patients after partial correction of ketoacidosis, (Group 2), and none in patients after resolution of ketoacidosis, (Group 3). The prevalence of hypomagnesemia was 6 for the chronic, metabolically stable diabetic control group, (Group 4), but 0 for the non-diabetic control group, (Group 5). Average serum Magnesium levels were significantly lower (p less than 0.05), in patients admitted in diabetic ketoacidosis compared to those of both the diabetic and the non-diabetic control groups. Also average serum Magnesium levels were significantly lower (p less than 0.05), in patients with corrected diabetic ketoacidosis than those of the healthy control group. But there were no significant differences (p = 0.59263) in average serum Magnesium levels between the diabetic control group and the diabetic patients after resolution of ketoacidosis. CONCLUSIONS: In this study the prevalence of hypomagnesemia was documented to be higher than the average described elsewhere for pediatric, adult, and coronary intensive care units. As hypomagnesemia is an indication of Magnesium depletion, we speculate that the transient hypomagnesemia detected in our study group is an expression of a state of Magnesium depletion that is masked by correction of acidosis and the Magnesium shifts associated with it. Consequently serum Magnesium values ought to be considered most reliable during and not after correction of
Assuntos
Humanos , Masculino , Feminino , Criança , Adolescente , Adulto , Cetoacidose Diabética/sangue , Magnésio/sangue , Fatores Etários , Análise de Variância , Bicarbonatos/sangue , Estudos Transversais , Dióxido de Carbono/sangue , Glicemia/análise , Concentração de Íons de Hidrogênio , Hemoglobinas Glicadas/análise , Unidades de Terapia Intensiva Pediátrica , Fatores de TempoRESUMO
OBJECTIVE: To determine the prevalence of hypomagnesemia in diabetic children during diabetic ketoacidosis and following restitution of acid-base balance. METHODS: Eight consecutive diabetic children, ranging in age from 8 to 16 years, hospitalized in the pediatric intensive care unit with diabetic ketoacidosis from October 1st. through December 31st, 1995. A control group of 33 metabolically stable diabetic children, and a control group of 30 healthy children. Both control groups were similar in composition regarding age and sex to the study group. None of the patients in the study group and none of the controls had Magnesium supplementation given to them during the study period. MEASUREMENTS: Total serum Magnesium concentrations were measured from peripheral venous blood in all 71 patients. For the study group serum Magnesium was determined in a serial fashion: 1. upon admission in diabetic ketoacidosis 2. 24 hours after admission 3. 72 hours after admission RESULTS: The prevalence of hypomagnesemia was 62.4% in patients with diabetic ketoacidosis, (Group 1), 25% in patients after partial correction of ketoacidosis, (Group 2), and none in patients after resolution of ketoacidosis, (Group 3). The prevalence of hypomagnesemia was 6% for the chronic, metabolically stable diabetic control group, (Group 4), but 0% for the non-diabetic control group, (Group 5). Average serum Magnesium levels were significantly lower (p less than 0.05), in patients admitted in diabetic ketoacidosis compared to those of both the diabetic and the non-diabetic control groups. Also average serum Magnesium levels were significantly lower (p less than 0.05), in patients with corrected diabetic ketoacidosis than those of the healthy control group. But there were no significant differences (p = 0.59263) in average serum Magnesium levels between the diabetic control group and the diabetic patients after resolution of ketoacidosis. CONCLUSIONS: In this study the prevalence of hypomagnesemia was documented to be higher than the average described elsewhere for pediatric, adult, and coronary intensive care units. As hypomagnesemia is an indication of Magnesium depletion, we speculate that the transient hypomagnesemia detected in our study group is an expression of a state of Magnesium depletion that is masked by correction of acidosis and the Magnesium shifts associated with it. Consequently serum Magnesium values ought to be considered most reliable during and not after correction of diabetic ketoacidosis. Since Magnesium was not supplemented to any of our patients, the normalization of their serum values must be the result of: a. decreased glycosuria-related urinary losses b. cessation of acidosis-related urinary losses c. Magnesium shifts from intra to extracellular space The high prevalence of hypomagnesemia and the significant lower average serum Magnesium levels in children with diabetic ketoacidosis reveals the magnitude of the problem and the potential for Magnesium depletion that occurs in diabetic children.
Assuntos
Cetoacidose Diabética/sangue , Magnésio/sangue , Adolescente , Adulto , Fatores Etários , Análise de Variância , Bicarbonatos/sangue , Glicemia/análise , Dióxido de Carbono/sangue , Criança , Estudos Transversais , Feminino , Hemoglobinas Glicadas/análise , Humanos , Concentração de Íons de Hidrogênio , Unidades de Terapia Intensiva Pediátrica , Masculino , Fatores de TempoAssuntos
Economia , Alimentos , Fenômenos Fisiológicos da Nutrição , Necessidades Nutricionais , Brasil , HumanosAssuntos
Dentição , Variação Genética , Genética Médica , Análise de Variância , Chile , Feminino , Humanos , Masculino , Anormalidades Dentárias/genéticaRESUMO
Hura crepitans es una especie arbórea, de porte grande hasta gigante, que forma parte de los estratos dominantes en gran parte de los bosques neotropicales y que se conoce localmente como ochoó e internacionalmente con los nombres (en inglés) de "Sandbox", "Possumwood" y "Sapwood"
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Recursos NaturaisRESUMO
El presente trabajo está enfocado, particularmente, en una especie: el yesquero blanco (cariniana ianeirensis), sobre la que se ha recopilada información de la bibliografía disponible, además de datos de estudios y experiencias propias de los autores, sobre la taxonomía, descripción morfológica, ecología, distribución geográfica, importancia ecológica, potencial forestal, recomendaciones para el manejo sostenible y algunas connotaciones económicas
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Recursos NaturaisRESUMO
El objetivo del presente trabajo es resumir los conocimientos que existen sobre la biología de los bibosis con sistema propio de sustento, los cuales podran usarse como ayuda para el manejo forestal sostenible de la especie. Se incluye información obtenida en la bibliografía existente sobre el tema, ademas de datos recolectados en varios sitios boscosos que cuentan con poblaciones de bibosis
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Recursos NaturaisRESUMO
El curupaú -Anadenanthera colubrina (Vell. Conc.) Benth - es un árbol de características conocidas desde tiempos coloniales por sus usos y aplicaciones en diversas actividades. Entre los más importantes están la extracción de taninos para la curtiembre de cueros, su uso como combustible (leña), la elaboración de carbón vegetal y lejía (jabón natural), además de su utilización como material de construcción para viviendas rústicas
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Recursos NaturaisRESUMO
La cuta es un árbol muy común en los bosques secos de Bolivia, tales como los situados en la zona de las tierras bajas del este de Santa Cruz. La especie es característica y forma parte de la fisonomía natural del mencionado tipo de bosque. Debido a las actividades agrícolas desarrolladas en esta zona, que implican el desbosque parcial (cortinas rompevientos) o total, se ha reducido una gran parte de la población. No sucede lo mismo en el sur del departamento de Santa Cruz, donde se pueden encontrar grandes poblaciones de esta especie en estado natural