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Search Results: 1 - 10 of 601377 matches for " César A; Vega "
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Mortalidad por dengue hemorrágico en ni os en Colombia: más allá del choque Dengue hemorrhagic fever mortality in children: beyond shock
Doris Martha Salgado,César A Panqueba,Martha Rocío Vega,Marisol Garzón
Infectio , 2008,
Abstract: En el dengue hemorrágico las manifestaciones inusuales como hepatitis, encefalitis y miocarditis están asociadas a las formas graves y muerte. Objetivo. Describir las causas de mortalidad por dengue hemorrágico en ni os menores de 13 a os en el Hospital Universitario de Neiva. Dise o. Estudio descriptivo, con recolección retrospectiva de la información. Lugar. Neiva, Huila Población: ni os menores de 13 a os Mediciones. Se registraron todos los pacientes fallecidos con diagnóstico de dengue hemorrágico entre los a os 2000 y 2006, para un análisis de variables, clínicas y de laboratorio, por grupos de edad, mediante pruebas no paramétricas. Resultados. De 1.448 ni os con dengue hemorrágico, 338 ingresaron a la unidad de cuidados intensivos pediátrica y hubo 15 casos fatales (letalidad 1,03%); el 40% ingresó en estadio III y 60% en estadio IV. Los síntomas gastrointestinales y signos de fuga vascular estuvieron presentes en el 100% de los casos. Hubo una mayor tendencia a la hipotensión, menor número de plaquetas y mayor elevación de transaminasas, en el grupo de ni os de 1 a 5 a os; no hubo diferencias significativas en las variables analizadas entre los grupos. Nueve pacientes fallecieron de miocarditis aguda (60%) con alteraciones del ritmo, de los cuales, dos presentaron elevación de transaminasas; tres ni os fallecieron por hepatitis aguda (20%) y tres fallecieron con coagulación intravascular diseminada (20%). Conclusión. La mortalidad por dengue hemorrágico no sólo tiene como causa el choque hipovolémico y, en la actualidad, debe considerarse el compromiso de órganos como el hígado y el miocardio, que contribuye a la evolución fatal. Unusual clinical manifestations such as hepatitis, encephalitis, myocarditis and even death might be associated to the severe forms of dengue hemorrhagic fever. Aim: To describe mortality cases in children younger than 13 years of age at the Hospital Universitario in Neiva, Colombia. Design: Descriptive study with retrospective collection of data. Place: Neiva, Huila, Colombia. Population: Children younger than 13 years of age. Measurements: All death patients with diagnosis of dengue hemorrhagic fever from 2000 to 2006 were registered; clinical variables and laboratory data were analyzed by age groups by using non parametric tests. Results: Out of 1,448 patients with dengue hemorrhagic fever, 338 were admitted to the Pediatric Intensive Care Unit with 15 deaths (lethality 1.03%); 40% of admissions were in state III whereas 60% in state IV. Gastrointestinal symptoms and vascular leakage signs were present in 100% of ca
Epidemiological investigation of an acute case of Chagas disease in an area of active transmission in Peruvian Amazon region
Cabrera, Rufino;Vega, Silvia;Cáceres, Abraham G.;Ramal A., César;álvarez, Carlos;Ladera, Pedro;Pinedo, Raul;Chuquipiondo, Gladys;
Revista do Instituto de Medicina Tropical de S?o Paulo , 2010, DOI: 10.1590/S0036-46652010000500009
Abstract: the study objective was to investigate an acute case of chagas disease in the san pedro de shishita community, pebas district, in the peruvian amazon basin, a non-endemic area. both parents of the index case (acute case) were thoroughly interviewed, a seroepidemiological survey was carried out in the community, parasitological exams were carried out only in relatives of the index case, and triatomine bugs were searched for inside houses, peridomiciliary, and in wild environments. seroprevalence for igg anti-t. cruzi antibodies was 1/104 (0.96%), using an elisa test and an indirect immunofluorescence assay. panstrongylus geniculatus and rhodnius pictipes adults were found. the index case is autochthonous from san pedro de shishita, but the source of transmission is unknown.
Mortalidad por dengue hemorrágico en ni?os en Colombia: más allá del choque
Salgado,Doris Martha; Panqueba,César A; Vega,Martha Rocío; Garzón,Marisol; Castro,Dolly; Rodríguez,Jairo Antonio;
Infectio , 2008,
Abstract: unusual clinical manifestations such as hepatitis, encephalitis, myocarditis and even death might be associated to the severe forms of dengue hemorrhagic fever. aim: to describe mortality cases in children younger than 13 years of age at the hospital universitario in neiva, colombia. design: descriptive study with retrospective collection of data. place: neiva, huila, colombia. population: children younger than 13 years of age. measurements: all death patients with diagnosis of dengue hemorrhagic fever from 2000 to 2006 were registered; clinical variables and laboratory data were analyzed by age groups by using non parametric tests. results: out of 1,448 patients with dengue hemorrhagic fever, 338 were admitted to the pediatric intensive care unit with 15 deaths (lethality 1.03%); 40% of admissions were in state iii whereas 60% in state iv. gastrointestinal symptoms and vascular leakage signs were present in 100% of cases. there was a higher tendency to hypotension, fewer platelet counts and higher serum transaminases in children between 1 to 5 years; there were no statistical differences between variables in none of the groups. nine patients died as a consequence of acute myocarditis (60%) with heart rhythm alterations, from which two had elevated serum transaminases; three died because of acute hepatitis (20%) and three died with disseminated vascular coagulation (20%). conclusion: mortality associated to dengue hemorrhagic fever is not only due to hypovolemic shock and currently, other organs such as liver and myocardium might be target of the disease.
Distribución de Taxus globosa (Taxaceae) en México: Modelos ecológicos de nicho, efectos del cambio del uso de suelo y conservación
CONTRERAS-MEDINA,RAúL; LUNA-VEGA,ISOLDA; RíOS-MU?OZ,CéSAR A;
Revista chilena de historia natural , 2010, DOI: 10.4067/S0716-078X2010000300009
Abstract: taxus globosa is a gymnosperm inhabiting mexican and northern central american temperate forests, and it has been considered as threatened by mexican and international conservancy agencies. in méxico, habitat loss is one of the main threats for most of the cloud forest species including this taxon, being human-induced land use change a key issue. we obtained the potential distribution of this species through maxent algorithm based on 73 herbarium records. also the modification of vegetation cover for three time periods (1976, 1996 y 2000) was analyzed upon the potential distribution of this species. the known and potential geographical distribution was evaluated in relation to the current mexican national system of natural protected areas at federal level (anps) and mexican priority regions for conservation (rtps), in order to determine the role of these areas in its conservation and management. potential distribution models show an important reduction (until 84 %) of the distribution area related with land use change. this species is scarcely represented in the anps, because less than 10 % of its potential distribution occurs within these areas of federal protection. this approach represents an important tool in biogeography and conservation, as well as in other areas of biology, due to its predictive ability. our results highlight the urgency to preserve the remaining mexican temperate forest patches, mainly cloud forest ones, to guarantee the existence of this species.
Distribución de Taxus globosa (Taxaceae) en México: Modelos ecológicos de nicho, efectos del cambio del uso de suelo y conservación Distribution of Taxus globosa (Taxaceae) in Mexico: Ecological niche modeling, effects of land use change and conservation
RAúL CONTRERAS-MEDINA,ISOLDA LUNA-VEGA,CéSAR A RíOS-MU?OZ
Revista chilena de historia natural , 2010,
Abstract: Taxus globosa es una gimnosperma que habita principalmente en los bosques templados de México y el norte de América Central, y que está considerada como amenazada por las agencias de conservación tanto mexicanas como internacionales. En México, una de las mayores amenazas para la mayoría de las especies de los bosques nublados es la pérdida de hábitat, la cual se propicia por la modificación de la cobertura vegetal por factores antropogénicos. Con base en 73 registros de herbario se obtuvo la distribución potencial de la especie mediante el algoritmo Maxent. Asimismo, a partir del modelo obtenido se analizó la modificación de la cobertura vegetal durante tres períodos (1976, 1996 y 2000) y su influencia en la distribución potencial de esta especie. Su distribución potencial fue evaluada en relación con el actual Sistema Nacional de áreas Naturales Protegidas a nivel federal (ANPs) de México y las Regiones Terrestres Prioritarias para la Conservación (RTPs), con el fin de determinar el papel de estas áreas en su conservación y manejo. Los modelos de distribución potencial muestran que existe una reducción importante del área de distribución (hasta el 84 %) al existir un cambio de uso de suelo. La especie está mal representada en las ANPs, pues menos del 10 % de su área potencial se encuentra dentro de estas áreas de protección federal. Este tipo de análisis representa una herramienta importante en biogeografía y conservación, así como en otras áreas del quehacer biológico, debido a su habilidad predictiva. Nuestros resultados muestran la urgencia que existe de conservar algunos parches de bosques templados mexicanos (principalmente los bosques nublados) para garantizar la existencia de esta especie. Taxus globosa is a gymnosperm inhabiting Mexican and northern Central American temperate forests, and it has been considered as threatened by Mexican and international conservancy agencies. In México, habitat loss is one of the main threats for most of the cloud forest species including this taxon, being human-induced land use change a key issue. We obtained the potential distribution of this species through Maxent algorithm based on 73 herbarium records. Also the modification of vegetation cover for three time periods (1976, 1996 y 2000) was analyzed upon the potential distribution of this species. The known and potential geographical distribution was evaluated in relation to the current Mexican National System of Natural Protected Areas at federal level (ANPs) and Mexican Priority Regions for Conservation (RTPs), in order to determine the role of these area
Lesiones preinvasivas del cuello uterino Pre-invasive lesions in the cervix
Dalgis Lau Serrano,María Margarita Millán Vega,Yarine Fajardo Tornés,César Sánchez Alarcón
Revista Cubana de Obstetricia y Ginecolog?-a , 2012,
Abstract: Introducción: el cáncer de cuello uterino es la segunda causa de muerte en la mujer a nivel mundialy la principal por enfermedades malignas. Estudios cubanos han reportado que más del 12 % de mujeres atendidas en el programa presentaron esta enfermedad, a pesar del programa nacional de detección precoz vigente. Su incidencia pone en evidencia que el control de la enfermedad, aunque constituye un propósito deseado, todavía no ha logrado los objetivos propuestos. Objetivos: hallar la correlación citohistológica, categorizar los grados de lesión y caracterizar el grupo de pacientes. Métodos: estudio de evaluación retrospectivo a pacientes atendidas en la Clínica de Especialidades Médicas de Bayamo con lesiones preinvasivas del cuello uterino desde enero del 2010 a junio del 2011. El universo fueron 246 citologías anormales y la muestra 89 resultados histológicos con cualquiera de los tres grados de neoplasia intraepitelial cervical obtenidos, se calculó la sensibilidad y especificidad para determinar la efectividad del diagnóstico histológico. Resultados: predominaron las neoplasias intraepiteliales cervicales grado I en los resultados citológicos e histológicos. La mayoría de las pacientes estaban en el grupo de 25 a 39 a os. La sexarquia precoz y la evidencia del virus del papiloma humano (VPH) fueron muy frecuentes. La correlación de la citología y la histología en el diagnóstico hallada fue del 64,1 %, con una sensibilidad del 90,3 % y una especificidad del 79,3 %. Conclusión: la correlación diagnóstica entre la citología y la histología fue efectiva. Introduction: cervical cancer is the second leading cause of death in women worldwide and the main due to malignant diseases. Cuban studies have reported that over 12 % of women attending the program had this disease, despite a national screening program in place for early detection. Its incidence shows that the control of this disease, although a desired purpose, has not yet achieved the proposed objectives. Objectives: to find the histological correlation quote, to categorize the grade injury, and to characterize the patient group. Methods: it was conducted a retrospective study evaluating patients treated at Bayamo medical specialty clinic from January 2010 to June 2011. These patients had preinvasive lesions of the cervix. The universe was 246 abnormal cytologies and we had a sample of 89 histologic results with any of the three grades of cervical intraepithelial neoplasia obtained. We calculated the sensitivity and specificity to determine the effectiveness of the histological diagnosis. Results: the
Artritis reumatoidea en población mapuche.: Una experiencia de 16 a?os en la IX región de Chile
Kaliski K,Sonia; Bustos M,Luis; Artigas A,Carmen; Alarcón V,César; Vega V,Miguel Angel; Cárdenas R,Cristián;
Revista médica de Chile , 2001, DOI: 10.4067/S0034-98872001000300003
Abstract: background: mapuche, chilean natives, represent approximately 9.8% of chilean population and in the ix region of the country, they account for 18.4% of population over 15 years old. they preserve some socio-cultural characteristics that make them different to the rest of the population. aim: to describe the epidemiological characteristics rheumatoid arthritis among mapuche natives. subjects and methods: retrospective review of patients of mapuche origin with rheumatoid arthritis, seen at temuco hospital between 1980 and 1996. results: among 308 cases gathered, only 106 (93 women, aged 55 ± 10 years old) complied with 1987 american college of rheumatology (acr) criteria for rheumatoid arthritis. the disease began between 29 and 52 years old in 73% of patients and the mean delay in diagnosis was 4.4 years. at diagnosis, 99% had symmetric poliarthritis, 28.3% had either fatigue, fever or weight loss, and 46.9% were in class iii or in class iv of acr-1991. fifty three percent of patients developed sicca syndrome, 36% developed nodules, 23% developed raynaud phenomenon, 11% developed pulmonary involvement, 7% developed vasculitis, 5% developed neurological manifestations and 19% developed ophthalmologic involvement. rheumatoid factor was positive in 78% and 73% had erosions. hla dr4 was (+) in 60% of 30 patients. thirty percent required 3 or more disease modifying drugs and prednisone over 10 mg/day. there was no correlation between functional capacity and several other features of the disease. conclusions: mapuche rheumatoid arthritis patients are detected late and have a poor functional capacity at the time of diagnosis. they also have a higher proportion of extraarticular manifestations, more erosions and require more aggressive treatments. (rev méd chile 2001; 129: 253-8).
Mola hidatiforme parcial con feto vivo en el tercer trimestre del embarazo
Sánchez Alarcón,César Emilio; Millán Vega,María Margarita; Fajardo Tornés,Yarine; Proenza Macías,Joaquín;
Revista Cubana de Obstetricia y Ginecolog?-a , 2010,
Abstract: this is the case of a partial hydatid mole with a live fetus at thirty two weeks pregnancy diagnosed and treated in obstetrics service of "carlos manuel de céspedes" bayamo, cuba and a review on this subject in the national and international literature. coxistence of this type of above mentioned mole is a uncommon entity, usually has been associated with a high risk of spontaneous abortion, intrauterine death, preterm labor, pre-eclampsia , hyperthyroidism and malignancy. its characterization is the result of a diandric triploidy and the presence of progressive and slow hydatiform changes associated with an identifiable abnormal fetus or embryo (live or death), membranes or fetal erythrocytes. the poor prognosis of pregnancy and the mother risks lead to a dilemma on he immediate or not termination of pregnancy. in present case at diagnosis a cesarean section was carried out with a good maternal and perinatal results.
Mortalidad materna en Granma
Millán Vega,María Margarita; Sánchez Alarcón,César; Rodríguez Reytor,Rafael; Rodríguez Ca?ete,Ana Rosa; Fajardo Tornes,Yarine;
Revista Cubana de Obstetricia y Ginecolog?-a , 2012,
Abstract: mother mortality is a sensible health indicator and is associated with the social development. its rate remains high at world level, the developing countries are the more affected by this problem. objective: to show the behavior of mother mortality in granma province from 1995 to 2010, to describe the course of deceases according to the general and direct rate of mother death by year, month, place of occurrence, municipality and cause. methods: a retrospective and descriptive study was conducted on the mother mortality from 1995 to 2020 in the granma province. results are showed in single tables, figures, percentages and rates. results: the higher general and direct mortality rate (84.4 and 67.4 x 100 000 life births, respectively) was reported in 1995, whereas the lowest one was reported in 2020 (9.5) without mother death of direct cause. deceases were more frequent in january, august and december. most patients died in the "carlos manuel de céspedes" hospital of bayamo and in the "celia sánchez manduley" hospital of manzanillo. the municipalities with more deceases were bayamo and manzanillo municipalities. there was predominance of hemorrhage as the major cause of death, followed the amniotic fluid embolism. conclusions: the general and direct mother death cause by months and years from 1995 to 2010 in granma province has obviously decreased although its decrease has not been uniform thus it is necessary to improve the strategies to solve the complex health problem.
Mortalidad materna en Granma Mother mortality in Granma province
María Margarita Millán Vega,César Sánchez Alarcón,Rafael Rodríguez Reytor,Ana Rosa Rodríguez Ca?ete
Revista Cubana de Obstetricia y Ginecolog?-a , 2012,
Abstract: Introducción: la mortalidad materna es un indicador sensible sobre salud y está asociado al desarrollo social. Su tasa se mantiene elevada a nivel mundial los países en desarrollo son los más afectados por esta problemática. Objetivos: mostrar el comportamiento de la mortalidad materna en Granma en el periodo del 1995 al 2010, describir el comportamiento de las defunciones según tasa general y directa de muerte materna por a o, mes, sitio de ocurrencia, municipio y causa. Métodos: estudio descriptivo retrospectivo sobre mortalidad materna en el periodo desde 1995 hasta el 2010 en la provincia Granma, Cuba. Los resultados se expusieron en tablas simples en números, porcentajes y tasas. Resultados: la tasa de mortalidad general y directa mas elevada (84,4 y 67,4 x 100 000 nacidos vivos, respectivamente) se reportó en el a o 1995, mientras que la más baja fue en el 2010 (9,5), en el que no hubo muertes maternas de causa directa. Las defunciones fueron más frecuentes en el mes de enero, agosto y diciembre. Las pacientes fallecieron mayoritariamente en el hospital "Carlos M. de Céspedes" de Bayamo y en el "Celia Sánchez Manduley" de Manzanillo. Los municipios que más fallecidas tuvieron fueron Manzanillo y Bayamo. Predominó la hemorragia como principal causa de muerte, seguida por el embolismo de líquido amniótico. Conclusiones: la tasa de muerte materna general y directa por meses y a os en el periodo desde 1995 hasta el 2010 en la provincia Granma en Cuba ha disminuido de forma evidente, aunque su descenso no ha sido uniforme por lo que se impone perfeccionar las estrategias para resolver esta compleja problemática de salud. Mother mortality is a sensible health indicator and is associated with the social development. Its rate remains high at world level, the developing countries are the more affected by this problem. Objective: To show the behavior of mother mortality in Granma province from 1995 to 2010, to describe the course of deceases according to the general and direct rate of mother death by year, month, place of occurrence, municipality and cause. Methods: a retrospective and descriptive study was conducted on the mother mortality from 1995 to 2020 in the Granma province. Results are showed in single tables, figures, percentages and rates. Results: the higher general and direct mortality rate (84.4 and 67.4 x 100 000 life births, respectively) was reported in 1995, whereas the lowest one was reported in 2020 (9.5) without mother death of direct cause. Deceases were more frequent in January, August and December. Most patients died in the "Carlos Ma
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