Safety of voluntary interruption of pregnancy (VIP) in two healthcare institutions in Medellín, Colombia, in 2019. Historical cohort / Seguridad de la Interrupción Voluntaria del Embarazo (IVE) en dos Instituciones Prestadoras de Salud en Medellín, Colombia, en 2019. Cohorte histórica.

Objectives: To characterize a cohort of women with voluntary interruption of pregnancy (VIP) and to describe intraoperative complications according to the technique used. Materials and Methods: Descriptive study in a historical cohort of women undergoing VIP in two healthcare institutions in Medellín, Colombia, in 2019. Women with pelvic infection and STIs were excluded. Consecutive sampling was used. Sociodemographic, sexual and reproductive health, clinical characteristics of the pregnancy, legal cause of the VIP, characteristics of the care process and complications of the VIP techniques up to post-procedural day 7 were the measured variables. A descriptive analysis was carried out. Results: Overall, 1,520 women were identified as eligible during the study period. Of them, 46 were intervened in other institutions, leaving 1,474 candidates to enter the study. Of them, 30 were excluded because of pelvic or sexually transmitted infections. Ultimately, 1,444 pregnant women were included in the analysis. Risk to the mother's health was the most frequent legal cause in 94.3% of cases. Ninety-nine percent of women received pre-procedural counseling, and 78.4% agreed to use some form of contraception after VIP. Manual vacuum aspiration (MVA) was used in 95.6% of women and dilation and curettage (D&C) in 4.4%. Complications up to postoperative day 7 occurred in 17.56%, and there were no complications in the MVA group; 80% of women attended the follow-up visit on post-VIP day 7. Conclusions: MVA is a safe procedure which was not associated with complications within the first seven post-VIP days in the studied patients. Prospective studies to assess the safety and cost of the different VIP options are required.

Objetivos: caracterizar una cohorte de mujeres con interrupción voluntaria del embarazo (IVE) y describir las complicaciones intraoperatorias según la técnica aplicada. Materiales y métodos: estudio descriptivo, de cohorte histórica en mujeres intervenidas a IVE en dos Instituciones Prestadoras de Salud-IPS en Medellín, Colombia, en el 2019. Se excluyeron aquellas mujeres con infección pélvica, e ITS. Se realizó un muestreo consecutivo, se evaluaron variables sociodemográficas, de salud sexual y reproductiva, características clínicas del embarazo, causa legal de la IVE, características de la atención y las complicaciones hasta los 7 días posteriores al procedimiento de las técnicas de IVE. Finalmente, se hace análisis descriptivo. Resultados: durante el periodo de estudio hubo 1.520 mujeres elegibles de las cuales 46 fueron intervenidas en otras instituciones por lo que quedaron 1.474 candidatas a ingresar al estudio, de estas se excluyeron 30 por presentar infecciones pélvicas o de transmisión sexual, por lo que, finalmente, se analizaron 1.444 mujeres gestantes. Los riesgos para la salud de la mujer fueron la causa legal más frecuente con un 94,3%. El 99% de las mujeres tenían asesoría previa, y el 78,4% aceptó algún método anticonceptivo post-IVE. El 95,6% de las mujeres fueron intervenidas por la técnica de aspiración manual endouterina (AMEU) y al 4,4% se la practicó la técnica de dilatación y curetaje (D&C). En un 17,56% de las pacientes intervenidas con D&C se presentaron complicaciones hasta el séptimo día posoperatorio, no hubo complicaciones en el grupo sometido a AMEU, el 80% de las mujeres asistieron a control el séptimo día post-IVE. Conclusiones: la AMEU es un procedimiento seguro que no generó complicaciones intraoperatorias en el procedimiento hasta los primeros siete días después de la IVE, en las pacientes estudiadas. Se requieren estudios prospectivos que evalúen la seguridad y costos de las diferentes alternativas de IVE.

Seguridad de la Interrupción Voluntaria del Embarazo (IVE) en dos Instituciones Prestadoras de Salud en Medellín, Colombia, en 2019. Cohorte histórica / Safety of voluntary interruption of pregnancy (VIP) in two healthcare institutions in Medellín, Colombia, in 2019. Historical cohort

RESUMEN Objetivos: caracterizar una cohorte de mujeres con interrupción voluntaria del embarazo (IVE) y describir las complicaciones intraoperatorias según la técnica aplicada. Materiales y métodos: estudio descriptivo, de cohorte histórica en mujeres intervenidas a IVE en dos Instituciones Prestadoras de Salud-IPS en Medellín, Colombia, en el 2019. Se excluyeron aquellas mujeres con infección pélvica, e infecciones de transmisión sexual (ITS). Se realizó un muestreo consecutivo, se evaluaron variables sociodemográficas, de salud sexual y reproductiva, características clínicas del embarazo, causa legal de la IVE, características de la atención y las complicaciones hasta los 7 días posteriores al procedimiento de las técnicas de IVE. Finalmente, se hace análisis descriptivo. Resultados: durante el periodo de estudio hubo 1.520 mujeres elegibles de las cuales 46 fueron intervenidas en otras instituciones por lo que quedaron 1.474 candidatas a ingresar al estudio, de estas se excluyeron 30 por presentar infecciones pélvicas o de transmisión sexual, por lo que, finalmente, se analizaron 1.444 mujeres gestantes. Los riesgos para la salud de la mujer fueron la causa legal más frecuente con un 94,3%. El 99% de las mujeres tenían asesoría previa, y el 78,4% aceptó algún método anticonceptivo post-IVE. El 95,6% de las mujeres fueron intervenidas por la técnica de aspiración manual endouterina (AMEU) y al 4,4% se la practicó la técnica de dilatación y curetaje (D&C). En un 17,56% de las pacientes intervenidas con D&C se presentaron complicaciones hasta el séptimo día posoperatorio, no hubo complicaciones en el grupo sometido a AMEU, el 80% de las mujeres asistieron a control el séptimo día post-IVE. Conclusiones: la AMEU es un procedimiento seguro que no generó complicaciones intraoperatorias en el procedimiento, mientras la D&C se acompañó de complicaciones en una de cada seis pacientes. Se requieren estudios prospectivos que evalúen la seguridad y costos de las diferentes alternativas de IVE.

ABSTRACT Objectives: To characterize a cohort of women with voluntary interruption of pregnancy (VIP) and to describe intraoperative complications according to the technique used. Materials and methods: Descriptive study in a historical cohort of women undergoing VIP in two healthcare institutions in Medellín, Colombia, in 2019. Women with pelvic infection and Sexually Transmitted Infections (STIs) were included. Consecutive sampling was used. Sociodemographic, sexual and reproductive health, clinical characteristics of the pregnancy, legal cause of the VIP, characteristics of the care process and complications of the VIP techniques up to postprocedural day 7 were the measured variables. A descriptive analysis was carried out. Results: Overall, 1,520 women were identified as eligible during the study period. Of them, 46 were intervened in other institutions, leaving 1,474 candidates to enter the study. Of them, 30 were excluded because of pelvic or sexually transmitted infections. Ultimately, 1,444 pregnant women were included in the analysis. Risk to the mother's health was the most frequent legal cause in 94.3% of cases. Ninety-nine percent of women received pre-procedural counseling, and 78.4% agreed to use some form of contraception after VIP. Manual vacuum aspiration (MVA) was used in 95.6% of women and dilation and curettage (D&C) in 4.4%. Complications up to postoperative day 7 occurred in 17.56%, and there were no complications in the MVA group; 80% of women attended the follow-up visit on post-VIP day 7. Conclusions: MVA is a safe procedure which was not associated with intraperatory comoplications. D&C was associated to complications in one of each six patients. Prospective studies to assess the safety and cost of the different VIP options are required.

Data on a temperature-dependent thermic and electrical properties of a novel blend polymeric system based on poly(vinyl alcohol), chitosan and phosphoric acid.

In this work, data on a temperature-dependent thermic and electrical properties in a novel blend polymer electrolyte membranes based on poly(vinyl alcohol) (PVA) and chitosan (CS) doped with H3PO4 at different concentrations were prepared by solution casting method. Their phase behavior and ionic conductivity were studied by DSC, TGA and IS. These membranes exhibit good proton conductivity of the order of 10-2 Scm-1 at 200 °C and the understanding of the H3PO4 at different concentrations effect in the polymer electrolyte membranes is crucial for possible applications in fuel cells. The data have not been reported nor discussed in the research paper to be submitting.

Data on A parametric temperature dependent potential for ß-PbF2: A numerical investigation by molecular dynamics.

This article presents the data on a parametric temperature dependent potential for ß-PbF2 using molecular dynamics (MD) simulations in the rigid ion approach. The ß-PbF2 is an important ionic conductor that exhibit a super ionic behavior at 711 K. The understanding of the temperature effect in its properties is crucial for possible applications in electrode for solid state batteries, Cherenkov detectors, and rare earth host for scintillation screen. The simulations were done in the DL_POLY Classic 1.9 package employing the Buckingham pair-potential type. The data have not been reported nor discussed in the research paper to be submitting.

Data on study of hematite nanoparticles obtained from Iron(III) oxide by the Pechini method.

This article presents the data on α-Fe2O3 nanoparticles synthesized via Pechini method using iron(III) oxide precursor from steel industry. It is important to highlight the added value that is given to an industrial waste. The samples were characterized by thermal analysis (DTA, TG), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). The TG showed three mass changes, whereas DTA resulted in three anomalies. X-ray diffraction pattern of the samples disclosed rhombohedral structure characteristic of the nanocrystalline α-Fe2O3 phase. The crystallite size was estimated for each thermal treatment. Fourier transform infrared spectroscopy confirms the phase purity of prepared nanoparticles. A detailed study on the local structure of the samples was carry out in the region of 800 and 400 cm-1, where the associated bands of Fe-O bonds are presents. The data have not been reported nor discussed for now.

Estudio exploratorio II: identificación de nanopartículas en procesos industriales de soldadura y de minería / Exploratory study II: identification of nanoparticles in industrial processes welding and mining

Se realizó un estudio exploratorio sobre la exposición laboral a nanopartículas en procesos de empresas del sector minero, fundición y soldadura. Para evaluar la exposición se utilizó un método cualitativo simplificado y un método semi-cuantitativo basado en las técnicas tradicionales de higiene ocupacional y de espectroscopía y microscopía electrónica para caracterizar las nanopartículas en cuanto a composición elemental, morfología y tamaños. Se evaluó cualitativamente el riesgo de exposición a nanopartículas de sílice y hierro, encontrándose una mayor criticidad en los procesos de preparación de muestras de minerales y de vaciado de colada en moldes de fundición. El análisis de muestras personales y ambientales evidenció la exposición de trabajadores a nanopartículas de sílice, hierro, magnesio, aluminio, manganeso, entre otras. La toxicidad de estas depende de la morfología y vía de ingreso (la principal vía es por inhalación). Se identificaron morfologías esféricas e irregulares, así como nanoalambres, aglomerados, estructuras cristalinas y amorfas, con tamaños bajo 100 nm. El trabajo realizado entrega la composición elemental y morfológica de las nanopartículas a los cuales se exponen los trabajadores en los procesos evaluados, junto con el alcance de los métodos de evaluación y la necesidad futura de realizar estudios cuantitativos para determinar niveles de exposición y concentraciones.

An exploratory study on occupational exposure to nanoparticles in processes of mining companies, casting and welding was performed. To assess exposure it was used a simplified qualitative and semiquantitative method based on traditional techniques of occupational hygiene and spectroscopy and electron microscopy to characterize nanoparticles in terms of elemental composition, morphology and size. The risk of exposure to silica nanoparticles and iron was qualitatively assessed, finding a bigger criticality in the process of sample preparation and emptying mineral casting molds. Analysis of personal and environmental samples showed workers exposure to nanoparticles of silica, iron, magnesium, aluminum, manganese, among others. The toxicity of these depends on the morphology and route of entry (the main way is by inhalation). Spherical and irregular morphologies were identified, as well as nanowires, crystalline and amorphous structures with sizes below 100 nm. The work performed gives the elemental composition and morphology of nanoparticles to which workers are exposed in the processes evaluated, along with the scope of the evaluation methods and the future need for quantitative studies to determine exposure levels and concentrations.

Estudio exploratorio de higiene industrial en ambientes de trabajo donde se producen o utilizan nanopartículas / Exploratory study of industrial hygiene in work areas where nanoparticles are produced or used

Se realizó un estudio exploratorio con los objetivos de identificar empresas que produzcan o manipulen nanopartículas en Chile, evaluar los riesgos para la salud de estas actividades y entregar recomendaciones para su control. Se encontró que la nanotecnología está en una etapa incipiente, con un reducido número de aplicaciones en procesos industriales, concentrándose el desarrollo y aplicación principalmente en centros de investigación de las universidades, donde los investigadores y estudiantes son el principal grupo de potenciales expuestos. Para evaluar la exposición en las empresas e instituciones identificadas, se utilizó un método cualitativo simplificado y un método cuantitativo que se basa en las técnicas tradicionales de higiene ocupacional complementadas con la caracterización de las nanopartículas mediante microscopía electrónica. Se evalúa la exposición a nanopartículas de cobre, carbonato de calcio y partículas ultrafinas de humos de soldadura. La metodología de evaluación cualitativa, si bien requiere algún grado de acondicionamiento, demostró ser una herramienta particularmente útil para definir sistemas de protección en el caso de las nanopartículas, cuya toxicidad es incierta y de las cuales no se tienen establecidas técnicas de medición ni límites permisibles. Los métodos de medición tradicionales de la higiene industrial no entregan la información suficiente para evaluar la exposición, debiendo ser complementados con microscopía electrónica para caracterizar el tamaño y composición química, parámetros claves en la toxicidad de las nanopartículas. El trabajo realizado entrega una base de información y conocimiento a nivel exploratorio, que se estima útil para evaluar el riesgo de exposición en aplicaciones que pudieran surgir en el contexto actual del desarrollo de la nanotecnología en nuestro país.

An exploratory research was developed in order to identify companies which produce or handle nanoparticles in Chile, evaluate the risks for health from these activities and give suggestions for controlling them. It was found that nanotechnology is in an incipient stage, with a reduced numbers of applications in industrial processes, focusing the development and application mainly on research centers in Universities, where researchers and students are the main exposed potential groups. To evaluate the exposure in identified companies and institutions, it was used a qualitative simplified method and a quantitative method which is based in traditional technique of occupational hygiene complemented by the characterization of nanoparticles with electronic microscopy. It was evaluated the exposure to nanoparticles of copper, calcium carbonate and welding smoke ultrafine particles. The methodology of qualitative evaluation, although requires some degree of conditioning, showed being a especially useful tool to define protection systems in nanoparticles case, whose toxicity is uncertain and we do not have established techniques of measuring them or permissible limits. Traditional measuring methods of industrial hygiene do not bring enough information to evaluate the exposure, and they must be complemented with electronic microscopy to characterize the size and chemical composition, key parameters in nanoparticles toxicity. This work provides a base of information and knowledge in a exploratory level, which is estimated as a useful tool to evaluate the exposure risk in applications that may appear in the current nanotechnology development in our country.

Vapor-liquid-Solid synthesis of [010]-oriented Sb2Se3 nanowires.

In this article we report for the first time the synthesis of Sb2Se3 nanowires using a physical vapor-liquid-solid (VLS) process. We used microcrystals of Antimony as solid catalytic material and molten Selenium to generate the vapor source. Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) images show that as-obtained Sb2Se3 nanowires have diameters in the range between 20 nm and 2 microm and lengths up to 30 microm. Fringes in TEM imaging reveals that Sb2Se3 nanowires are oriented along the [010] crystallographic direction. This orientation is being reported for the first time.

Vapor-liquid-solid synthesis and characterization of alpha-monoclinic selenium nanowires.

Nanowires of alpha-monoclinic Selenium have been synthesized using a physical vapor-liquid-solid (VLS) process for first time. We used micron sized particles of crystalline Antimony Selenide as catalyst and molten Selenium to generate the vapor source. The synthesized nanowires have diameters in the range between 20 nm and 1 microm and lengths up to 30 microm. Nanowires with diameters of approximately 50 nm are the most predominantly produced. Transmission Electron Microscopy (TEM), Micro-Raman Spectroscopy, Absorption Spectroscopy, Energy Dispersive X-ray Analysis (EDAX), High-Resolution Transmission Electron Microscopy (HRTEM) and Selected Area Electron Diffraction (SAED) were used to characterize their morphology, composition and crystallographic structure. It is found that the nanowires grow perpendicular to the (053) plane and exhibit an energy band-gap of 2.2 eV (a 0.18 eV increase compared to bulk).