ABSTRACT
Resumen Introducción: la diabetes mellitus (DM) es una epidemia mundial. La retinopatía diabética proliferativa (RDP), el edema macular diabético (EMD) y las complicaciones de la diabetes mellitus son las principales causas de discapacidad visual y ceguera en los adultos en la edad productiva. Aproximadamente, 1 de cada 3 personas con DM tiene retinopatía diabética (RD) y 1 de cada 10 tiene RDP o EMD. En el presente estudio se hace énfasis en esta última, siendo el primero con estas características en Colombia. Métodos: estudio transversal descriptivo donde se incluyeron 1.203 pacientes con diagnóstico de DM atendidos en la jornada "No más ciegos por Diabetes" del Hospital San Vicente Fundación de Medellín, en el 2017 y 2018. Se evaluó la presencia de RD y EMD clínico y sus características epidemiológicas en un análisis bivariado. Resultados: del total de pacientes con DM tamizados (1.203), el 5,4 % (65) tenían EMD; dentro de estos, el 7,7 % tenía DM tipo 1 y el 89,2% DM tipo 2. El 10,8 % tenía RDP, 73,8% tenía RD no proliferativo (RDNP). En un 93,8 % se hizo diagnósticos de novo de RD. La mediana del tiempo de la diabetes fue de 14 años, con un rango intercuartílico (RIQ) entre 7 y 19,5. La mediana de la hemoglobina glicosilada (HbA1C) fue de 8,3 % (RIQ: 7,1-11). De 65 pacientes con EMD, 28 (56 ojos de los 130 con EMD) fueron estudiados con tomografía de coherencia óptica (OCT) y al 85,7 % se le confirmó EMD. La mediana del grosor macular central fue de 249 micras (RIQ: 231-341) en los pacientes con EMD por OCT (n = 48 ojos). Conclusión: las complicaciones de la diabetes son más prevalentes en los pacientes con RD. La media del tiempo de aparición de EMD fue similar al tiempo de inicio de las complicaciones microvasculares de la diabetes reportada en la literatura, pero debe ser considerada en el contexto del control metabólico de los pacientes.
Summary Introduction: Diabetes Mellitus (DM) is a worldwide epidemic disease, with significant microvascular compromise. Proliferative diabetic retinopathy (PDR) as well as diabetic macular edema (DME) are currently two of the leading causes of visual impairment and blindness in adults of productive age. Approximately one in three people with DM have diabetic retinopathy (DR), and 1 in 10 have PDR or DME. This study emphasizes in the last one, being the first one with these characteristics in Colombia. Methods: This descriptive cross-sectional study includes 1203 patients diagnosed with DM evaluated in the "No more blindness due to diabetes" diabetic retinopathy-screening program of the San Vicente Foundation Hospital in Medellín between 2017 and 2018. The presence of DR and clinical macular edema with the epidemiologic variables were evaluated in a bivariate analysis. Results: From the total number of patients with DM screened (1203), 5,4% (65) had DME, 7,7% had DM type 1 and 89,2% had DM type 2, 10,8% had PDR and 73.8% had nonproliferative diabetic retinopathy NPDR. Most of the patients (93,8%) were diagnosed de novo with DR. The median illness time was 14 years with interquartile range (IQR) between 7 and 19,5. The median glycosylated hemoglobin (HbA1C) was 8.3% (IQR:7,1-11). Optical coherence tomography (OCT) study was done in 28 out of 65 patients with DME (56 out of 130 eyes with DME), in which 85.7% of patients were confirmed to have DME and the mean central macular thickness was 249 microns (IQR:231-341) (n=48 eyes). Conclusion: DM complications were more frequent in patients suffering from DR. The median onset time of DME symptoms was found to be similar to the time of microvascular complications appear; however, it should be considered along with the patient's metabolic control.
ABSTRACT
INTRODUCCIÓN: La depresión y ansiedad son dos patologías de alto impacto personal, social y económico; su evolución se da en muchos casos desde edades tempranas. La violencia generada dentro del hogar puede provocar la separación de muchos NNA de su núcleo familiar; siendo enviados, la mayoría de las veces, a casas de acogida. Aquellos niños y adolescentes que se encuentran en casas de acogida, tienden a desarrollaron ansiedad, depresión y estrés y estos trastornos desencadenan en dificultades emocionales y mentales a lo largo de su vida. En este contexto, el principal objetivo de este trabajo fue dar a conocer la frecuencia de ansiedad y depresión en niñas y adolescentes de la casa de acogida "Miguel León" del cantón Cuenca, en el 2016, generando estadísticas que permitan sentar las bases para proyectos de protección y estudios futuros. MATERIALES Y MÉTODOS: Estudio de tipo descriptivo, transversal cuantitativo. Con una población de estudio de 35 niñas y adolescentes, en edades de 5 a 18 años, de una casa de acogida. Para la recolección de datos se usaron, la Escala de Ansiedad Infantil de SPENCE y el Inventario CDI. El procesamiento se realizó mediante el programa Microsoft Excel 2010 y el software SPSS 15.0. Los datos se presentan en tablas y gráficos mediante frecuencias y porcentajes. RESULTADOS: La frecuencia de ansiedad fue de 22.86% y la frecuencia de depresión del 17.14%. El rango de edad más prevalente para ambas patologías fue de 10 a 14 años con 62.5% y 50% respectivamente. Tanto en el grupo de NNA con ansiedad como en el grupo con depresión el tiempo de estancia en la casa de acogida fue de 0 a 6 meses para la mayoría (50 y 66.67% respectivamente). CONCLUSIÓN: La frecuencia de depresión en niñas de 5 a 18 años de edad en la casa de acogida fue de 17.14%. La frecuencia de ansiedad en niñas de 5 a 18 años de edad en la casa de acogida fue del 22.86%, valores inferiores a los encontrados en otros estudios. El rango de edad en el que estas enfermedades fueron más prevalentes fue de 10-14 años. Ambos trastornos fueron más prevalentes cuanto menor fue el tiempo de estadía en la casa de acogida.
BACKGROUND: Depression and anxiety are two pathologies of great personal, social and economic impact; in many cases both have an early onset. Domestic violence can separate children and adolescents from their families; being sent, most of the times, to foster homes. Children and adolescents in foster homes tend to develop anxiety, depression and stress triggering lifelong emotional and mental difficulties. In this context, the aim of this study was to determine the frequency of anxiety and depression in girls and female adolescents from "Miguel León" Shelter, Cuenca, during 2016, creating statistical data that will allow setting protection projects and future studies. METHODS: Descriptive, quantitative cross-sectional study. The study population was stablished with 35 girls and adolescents, aged 5 to 18 years, from a foster home. For data collection, the SPENCE Child Anxiety Scale and the CDI Inventory were applied. Data was processed with Microsoft Excel 2010 and SPSS 15.0. Data is presented in charts and graphics using frequencies and percentages. RESULTS: The frequency of anxiety was 22.86% and the frequent of depression was 17.14%. The most prevalent age range for both pathologies was 10 to 14 years old with 62.5% and 50% respectively. In both groups, diagnosed with anxiety and diagnosed with depression, the length of stay in the foster home was 0 to 6 months for the majority of the population ( 50 and 66.67% respectively). CONCLUSIÓN: The frequency of depression in girls aged 5 to 18 years, was 17.14%. The frequency of anxiety in girls aged from 5 to 18 years in the foster home was 22.86%, values lower than those found in other studies. The age range in which both diseases were most prevalent was, 10-14 years old. Both disorders were more prevalent the shorter the time spent in the foster home.
Subject(s)
Humans , Male , Female , Child , Adolescent , Anxiety , Violence , Depression , Family , Nuclear Family , Domestic ViolenceABSTRACT
Background: Industrial wastewaters with a high content of nitrogen are a relevant environmental problem. Currently, treatments to remove nitrogen are not efficient, so is necessary to develop alternative methods. The objective of this study is to investigate a consortium of microalgae - nitrifying, that due to the symbiosis between them could be an interesting alternative. Results: In this study, it was possible to obtain a consortium of nitrifying bacteria (NB) and microalgae (MA) capable of operating with low requirements of dissolved oxygen, using aerobic sludge from wastewater treatment plants. During the operation, this consortium presents removal percentages above 98% of ammonia, even at concentrations of DO of 0.5 mg O2 L-1. It is estimated that the removal was caused both by the action of nitrifying bacteria and microalgae. It was determined that approximately 60% of the ammonia feed was oxidized to nitrate by nitrifying bacteria, while the algae assimilated 40% of the nitrogen feed at steady state. A methodology for measuring the specific activities of nitrifying bacteria and microalgae by comparing the rates in the variation inorganic nitrogen compounds was established with satisfactory results. An average specific activity of 0.05 and 0.02 g NH4 + gVSS-1 d-1 for nitrifying bacteria and microalgae was determined, respectively. Conclusions: The consortium it can be obtained in a single continuous operation, and has a high capacity for nitrogen removal with low oxygen content. The consortium could prove to be a more economical method compared to traditional.
Subject(s)
Oxygen , Microalgae , Microbial Consortia , Nitrification , Ammonium Compounds , Symbiosis , Wastewater , AmmoniaABSTRACT
A start-up strategy was presented and evaluated to obtain a well-established biofilm in a gas lift-reactor capable both for the removal of organic matter and sulphate. Pumice stone was used as material support. The influence of shear forces, given by the biogas recirculation, the effect of the COD/SO4-2 ratio and the OLRs increase were evaluated on the reactor performance. From the first stages, cell colonization was observed along with the presence of extracellular polymeric substances. The COD and sulphate removal was over 70 percent, for all conditions. The increase of gas flow did not have an adverse effect on biofilm development even though there was some detachment. Specific methanogenic activity of the biofilm increased along the experiments. Operational parameters as alkalinity and alkalinity ratio were within the recommended values for the operation with sulphate-rich wastewater. For gas-lift reactors operation it becomes fundamental to have a suitable start-up strategy that takes into account the initial biofilm development from a non-acclimatized biomass.
Subject(s)
Biofilms , Bioreactors , Organic Matter , Sulfates/metabolism , GasesABSTRACT
In this work, an anaerobic sequencing batch reactor (ASBR) was operated for 8 months to treat low strength sewage with high suspended organic matter content. Three phases of operation with increasing organic loading rates (OLR) were performed: 0.4 kg COD/m³ x d (phase I), 0 .8 kg COD/m³ x d (phase II) and 1.2 kg COD/m³ x d (phase III). Adequate stability parameters (pH, total alkalinity) were obtained through all three experimental phases. During phases I and II, the removal efficiencies of organic matter (expressed as total chemical oxygen demand (COD) and total suspended solids ranged between 50-60 percent. However, these values decreased to 15-25 percent in phase III. In addition, a non-complex model, including hydrolysis, acidogenesis and methanogenesis, was applied to predict the reactor behavior.