AQUACEL® Ag Advantage reduces the stress of postoperative packing removal after endoscopic sinus surgery

Abstract Objective: After Endoscopic Sinus Surgery (ESS), packing plays an important role in wound healing and hemostasis. However, the effect of the packing removal procedure on physician stress has not been evaluated. The purpose of this study was to evaluate physician stress during packing removal for patients treated with AQUACEL® Ag Advantage versus KALTOSTAT®. Methods: This retrospective study included 15 patients who underwent packing with ESS for chronic rhinosinusitis performed at two centers; 9 were treated with AQUACEL® Ag Advantage and 6 were treated with KALTOSTAT®. Physician stress during packing removal was evaluated with the National Aeronautics and Space Administration-Task Load Index (NASA-TLX). The time required to remove the packing and the number of instruments used in the procedure were recorded. Postoperative bleeding (Boezaart bleeding score) and wound healing were graded. Patient symptoms on the day after surgery and pain during packing removal were assessed using a visual analog scale. Results: Computed tomography scores, asthma complications, and blood eosinophil counts were significantly higher in the AQUACEL® Ag Advantage group. Patient symptoms on the day after surgery were not significantly different between the two groups. Physician stress during the task of packing removal was significantly lower in the AQUACEL® Ag Advantage group than in the KALTOSTAT® group (35.5 vs. 81.0, p = 0.016) according to the NASA-TLX scores. The number of instruments used in the procedure was significantly lower in the AQUACEL® Ag Advantage group than in the KALTOSTAT® group (3.0 vs. 6.0, p = 0.015). There were no significant differences in procedure time for packing removal, postoperative bleeding, wound healing, or patient pain at the time of packing removal between the groups. Conclusion: Physicians feel stressed about packing removal. In addition, AQUACEL® Ag Advantage is useful for packing after ESS, requiring fewer instruments for the procedure than KALTOSTAT® and reducing physician stress about the procedure. Level of evidence: Level 3.

Síndrome pilórico en un body packer / Pyloric syndrome in a body packer

Introducción. El embalaje y transporte de estupefacientes dentro del organismo, o body packing, es una práctica frecuente en Centroamérica y el Caribe. Además del riesgo de muerte por la exposición a las sustancias tóxicas, existe el riesgo de complicaciones mecánicas con indicación de manejo quirúrgico. El Hospital de Engativá, por su cercanía al aeropuerto de Bogotá, D.C., Colombia, es el centro de referencia para el tratamiento de estos pacientes. Caso clínico. Un hombre de 65 años traído al hospital por un episodio emético con expulsión de cuatro cápsulas para el transporte de estupefacientes. Al examen físico se encontraron masas palpables en el hemiabdomen superior, sin abdomen agudo. La tomografía de abdomen informó un síndrome pilórico secundario a retención gástrica de cuerpos extraños. Fue llevado a laparotomía y gastrotomía logrando la extracción de 97 objetos cilíndricos de látex que contenían sustancias ilícitas. Discusión. En los body packer asintomáticos, la administración de soluciones laxantes es una estrategia terapéutica segura. Los casos reportados de obstrucción gastrointestinal son infrecuentes y se relacionan con la ingesta de un gran número de cápsulas, por lo que es necesario el tratamiento quirúrgico. Conclusión. El síndrome pilórico es una presentación infrecuente en un body packer. Se debe tener un alto índice de sospecha para garantizar un manejo oportuno

Introduction. Packaging and transportation of narcotic drugs inside a human body, or body packing, is a frequent practice in Central America and the Caribbean. In addition to the risk of death due to exposure to toxic substances, there is a risk of mechanical complications with an indication for surgical management. The Engativá Hospital, due to its proximity to the airport in Bogotá, D.C., Colombia, is the reference center for the treatment of these patients. Clinical case. A 65-year-old man brought to the hospital for an emetic episode with expulsion of four narcotic transport capsules. Physical examination revealed palpable masses in the upper abdomen, without an acute abdomen. Abdominal tomography revealed pyloric syndrome secondary to gastric retention of foreign bodies. He was taken to laparotomy and gastrotomy, achieving the extraction of 97 cylindrical latex objects that contained illicit substances. Discussion. In asymptomatic body packers, the administration of laxative solutions is a safe therapeutic strategy. Reported cases of gastrointestinal obstruction are infrequent and are related to the ingestion of a large number of capsules, for which surgical treatment is necessary. Conclusion. Pyloric syndrome is an uncommon presentation in body packers. A high index of suspicion is required to ensure timely management

Chiral separation methods and the applications in the study of chiral components of traditional Chinese medicines / 药学学报

Chirality is one of the fundamental properties of nature, and most of the important molecules in living organisms contain chiral structures. The efficacy and safety of drugs are often closely related to the chiral structure of compounds, however, there are relatively more studies on synthetic characterization, pharmacology, and toxicology of chiral small molecule chemical drugs, but relatively less studies on chiral compounds contained in natural drugs such as traditional Chinese medicines. Chiral separation, as the basis of chiral research, has a pivotal position in the study of chiral compounds. In this paper, we systematically describe the separation methods of chiral compounds from the classification of chiral splitting methods based on chromatographic and non-chromatographic methods, as well as chromatographic packing materials, chiral additives and chiral derivatization, and review the chiral compounds in natural drugs such as traditional Chinese medicines reported in the past ten years, in order to provide references for the splitting and evaluating the activity of chiral compounds, and the improvement of quality standards of traditional Chinese medicines.

Body Packer y Body Stuffer: Serie de Casos. Revisión / Body Packer y Body Stuffer: serie de casos. Revision

"Body packing", "Body pushing" y "Body stuffing" son distintas formas de transportar sustancias ilegales dentro del cuerpo humano. Frente al ingreso en la unidad de emergencias de un "Body Packer", conocido como "tragador de paquetes" con fines de contrabando o un "Body Stuffer" llamados "tragadores rápidos", quienes ingieren en forma compulsiva paquetes manufacturados para la venta de sustancias ante la posibilidad de ser sorprendidos por agentes de la ley; se plantean una serie de desafíos en cuanto al tratamiento que al día de hoy permanecen en debate. Generalmente se prefiere mantener una conducta conservadora facilitando la expulsión de los paquetes. En aquellos casos en los que los pacientes presenten paquetes atascados o rotos o no mejoren con el tratamiento conservador, se recomienda el tratamiento quirúrgico.El presente trabajo tiene por objetivo reportar una serie de casos internados por ingesta de paquetes potencialmente peligrosos que se sometieron a una evacuación farmacológica y/o quirúrgica en 8 pacientes y una revisión bibliográfica sobre el tema.

"Body packing", "Body pushing", and "Body stuffing" are different ways to use the interior of the human body to transport illegal substances. In the face of a "Body Packer" or a "Body Stuffer" known as "fast swallowers", which are those cases in which they compulsively swallow manufactured packages for the sale of substances before the possibility of being surprised by law enforcement officers, a series of challenges present themselves regarding the treatment, which is currently up for debate. Generally, a conservative conduct is preferred, facilitating the expulsion of the packages. In those cases, in which patients have stuck or broken packages or do not improve with conservative treatment, surgical treatment is recommended.The present paper aims to report a series of cases in which the patients were admitted due to an intake of potentially dangerous packages and put through a pharmacological evacuation and/or surgical evacuation of 8 patients, and a bibliographical revision on the subject.

Overcoming tobacco industry opposition to standardized packaging in the Americas / Superando la oposición de la industria tabacalera al empaquetado estandarizado en la Región de las Américas / Superando a oposição da indústria do tabaco às embalagens padronizadas nas Américas

ABSTRACT Countries in the Region of the Americas have been slow to adopt standardized packaging of tobacco products. The objectives of this analysis are to report on the progress made in adopting such packaging in countries in the Region, review known tobacco industry strategies for opposing these policies and discuss the resources available to academics, advocates and policy-makers who might be interested in advancing the use of standardized packaging in the Region. Of the 23 countries worldwide that have fully adopted standardized packaging laws, only 2 are in the Region (Canada and Uruguay). Six other countries (Brazil, Chile, Costa Rica, Ecuador, Mexico and Panama) have tried to introduce standardized packaging through draft bills, all of which have been delayed or withdrawn. There are indications that the tobacco industry has used its playbook of arguments to oppose the policy in those countries, including allegations that standardized packaging breaches national laws and international treaties protecting intellectual property, alongside threats of litigation. It is possible that these threats and allegations may have had a greater effect in the Region because of the lengthy (6 years) and costly (legal fees of US$ 10 million) international investment arbitration brought by Philip Morris International against Uruguay's strong tobacco packaging laws. However, all of the industry's arguments have been debunked, and national courts and international legal forums have upheld standardized packaging as a lawful policy. Governments in the Region of the Americas should follow the examples of Canada and Uruguay and reject the industry's false arguments and litigation threats. This analysis discusses some of the financial and technical resources that can assist them.

RESUMEN Los países de la Región de las Américas han tardado en adoptar el empaquetado estandarizado de los productos de tabaco. Los objetivos de este análisis son informar sobre el progreso realizado en la adopción de dicho empaquetado en los países de la Región, revisar las estrategias conocidas de la industria tabacalera para oponerse a estas políticas y abordar los recursos disponibles para la comunidad académica, los defensores de la causa y los responsables de formular las políticas que podrían estar interesados en fomentar el uso del empaquetado estandarizado en la Región. De los 23 países de todo el mundo que han adoptado plenamente leyes sobre el empaquetado estandarizado, solo dos se encuentran en la Región (Canadá y Uruguay). Otros seis países (Brasil, Chile, Costa Rica, Ecuador, México y Panamá) han tratado de introducir empaquetados estandarizados mediante proyectos de ley, los cuales han enfrentado demoras o han sido retirados. En esos países hay indicios de que la industria tabacalera ha recurrido a una cartilla de argumentos para oponerse a esta política, como acusaciones de que los empaquetados estandarizados violan las leyes nacionales y los tratados internacionales que protegen la propiedad intelectual, además de amenazas de litigios. Es posible que estas amenazas y alegatos hayan tenido un mayor efecto en la Región debido al largo (6 años) y costoso (costos legales de US$ 10 millones) arbitraje internacional en el ámbito de las inversiones presentado por Philip Morris International contra las fuertes leyes de empaquetado de tabaco de Uruguay. Sin embargo, todos los argumentos de la industria han sido desacreditados, y los tribunales nacionales y los foros jurídicos internacionales han defendido el empaquetado estandarizado como una política legal. Los gobiernos de la Región de las Américas deben seguir los ejemplos de Canadá y Uruguay y rechazar los argumentos falsos y las amenazas de litigio de la industria. En este análisis se examinan algunos de los recursos financieros y técnicos que pueden ayudarlos.

RESUMO Os países da Região das Américas têm sido lentos em adotar embalagens padronizadas para produtos de tabaco. Os objetivos desta análise são: informar acerca do progresso feito na adoção de tais embalagens nos países da região; revisar as estratégias conhecidas da indústria do tabaco para se opor a essas políticas; e discutir os recursos disponíveis para acadêmicos, defensores e formuladores de políticas que possam estar interessados em avançar no uso de embalagens padronizadas na região. Dos 23 países do mundo que adotaram leis obrigando o uso de embalagens totalmente padronizadas, apenas 2 estão na região (Canadá e Uruguai). Seis outros países (Brasil, Chile, Costa Rica, Equador, México e Panamá) tentaram introduzir embalagens padronizadas por meio de projetos de lei, os quais foram todos adiados ou retirados. Há indícios de que a indústria do tabaco usou seus argumentos habituais - incluindo alegações de que embalagens padronizadas violam leis nacionais e tratados internacionais de proteção à propriedade intelectual, além de ameaças de litígio - para se opor às políticas nesses países. É possível que essas ameaças e alegações tenham tido um efeito maior na região devido ao longo (6 anos) e dispendioso (US$ 10 milhões em honorários advocatícios) processo de arbitragem internacional iniciado pela Philip Morris International contra as fortes leis de embalagem de produtos de tabaco do Uruguai. Porém, todos os argumentos da indústria foram desmascarados e tanto os tribunais nacionais como fóruns jurídicos internacionais decidiram em favor da embalagem padronizada como política legal. Os governos da Região das Américas deveriam seguir os exemplos do Canadá e do Uruguai e rejeitar os argumentos falsos e as ameaças de litígio da indústria. Esta análise discute alguns recursos financeiros e técnicos que podem ajudá-los.

Moving in the right direction: tobacco packaging and labeling in the Americas / Avanzar en la dirección correcta: empaquetado y etiquetado del tabaco en la Región de las Américas / No rumo certo: embalagem e etiquetagem de produtos de tabaco nas Américas

ABSTRACT Objectives. To assess the adoption of tobacco packaging and labeling policies based on the World Health Organization (WHO) Framework Convention on Tobacco Control (FCTC)'s Article 11 guidelines, in the WHO Region of the Americas (AMRO). Methods. We reviewed tobacco control laws in AMRO from the Campaign for Tobacco-Free Kids' Tobacco Control Laws database. We analyzed four sub-policy areas for smoked and smokeless tobacco products: 1) health warning labels (HWLs), 2) constituents and emissions (C&Es), 3) misleading tobacco packaging and labeling, and 4) standardized "plain" packaging. Results. Of 35 countries in AMRO, 31 have tobacco packaging and labeling laws. Twenty-six countries require pictorial HWLs, 24 require warnings printed on at least 50% of the front and back of the packs, and 24 rotate a single or multiple (from 2 to 16) warnings within a specified period (from 5 up to 24 months). Only 21 countries require descriptive messages on toxic C&Es information. Twenty-seven countries ban brand descriptors with references to implied harm reduction (e.g., "light"), 24 ban figures, colors, and other signs, but only 13 prohibit emission yields printed on the packs. Only Canada and Uruguay have adopted standardized tobacco packaging while Uruguay also requires a single presentation (one brand variant) per brand family. Conclusion. Many countries in AMRO have made good progress in adopting multiple, rotating, large pictorial HWLs and banning misleading brand descriptors. However, there needs to be greater attention on other tobacco packaging and labeling provisions with a focus on implementing standardized tobacco packaging.

RESUMEN Objetivos. Evaluar la adopción de las políticas de empaquetado y etiquetado de los productos de tabaco basadas en las Directrices del Artículo 11 del Convenio Marco para el Control del Tabaco (CMCT) de la Organización Mundial de la Salud (OMS) en la Región de las Américas de la OMS. Métodos. Se examinaron las leyes de control del tabaco en la Región de las Américas de la base de datos de legislación para el control del tabaco de la organización Campaign for Tobacco-Free Kids. Se analizaron cuatro subáreas de políticas sobre los productos de tabaco para fumar y sin humo: 1) etiquetas de advertencia sanitaria; 2) componentes y emisiones; 3) empaquetado y etiquetado engañoso del tabaco, y 4) empaquetado "neutro" estandarizado. Resultados. De los 35 países de la Región, 31 disponen de leyes de empaquetado y etiquetado de los productos de tabaco. Veintiséis países requieren etiquetas de advertencia sanitaria con imágenes, 24 requieren advertencias impresas en al menos 50% de la parte frontal y posterior de los paquetes, y en 24 se rotan una o varias advertencias (entre 2 y 16) en un período específico (entre 5 y 24 meses). Solo 21 países requieren mensajes descriptivos sobre componentes y emisiones tóxicos. Veintisiete países prohíben los descriptores de marca con referencias a una supuesta reducción de daños (por ejemplo, "suaves"), 24 prohíben imágenes, colores y otros símbolos, aunque solo 13 prohíben que las cifras de emisiones figuren en los paquetes. Únicamente Canadá y Uruguay han adoptado un empaquetado estandarizado de los productos de tabaco, si bien en Uruguay también es obligatoria una presentación única (variante de marca) por familia de marca. Conclusión. Muchos países de la Región han logrado avances en la adopción de diferentes etiquetas rotativas de advertencia sanitaria con imágenes de gran tamaño y en la prohibición de descriptores de marca engañosos. Sin embargo, es necesario prestar mayor atención a otras disposiciones sobre el empaquetado y el etiquetado de los productos de tabaco destinadas a la aplicación de un empaquetado estandarizado de estos productos.

RESUMO Objetivos. Avaliar a adoção de políticas de embalagem e etiquetagem de produtos de tabaco com base nas diretrizes do Artigo 11 da Convenção-Quadro para o Controle do Tabaco (FCTC) da Organização Mundial da Saúde (OMS), na Região das Américas da OMS. Métodos. As leis de controle do tabaco na AMR foram examinadas com base no banco de dados das Leis de Controle do Tabaco da Campanha para Crianças Livres do Tabaco. Foram analisadas quatro subáreas de política para produtos de tabaco queimados/combustíveis e não geradores de fumaça: 1) advertências sanitárias, 2) componentes e emissões (C&E), 3) embalagem e etiquetagem enganosa de produtos de tabaco e 4) embalagem padronizada. Resultados. Dos 35 países da AMR, 31 têm leis sobre a embalagem e etiquetagem de produtos de tabaco. Vinte e seis países exigem imagens de advertência, 24 exigem advertências impressas que ocupem pelo menos 50% da frente (face anterior) e do verso (face posterior) das embalagens e 24 realizam rodízio de uma ou várias (de 2 a 16) advertências dentro de um período especificado (de 5 a 24 meses). Apenas 21 países exigem mensagens descritivas sobre C&E tóxicos. Vinte e sete países proíbem os descritores que levem a uma falsa impressão de redução de danos (por exemplo, "light") e 24 proíbem o uso de figuras, cores e outros indicadores, mas apenas 13 proíbem a impressão do teor de emissões nas embalagens. Somente o Canadá e o Uruguai adotaram embalagens padronizadas para produtos de tabaco, e o Uruguai também exige uma única apresentação (uma variante de marca) por família de produto. Conclusão. Muitos países na AMR têm avançado na adoção de advertências sanitárias pictóricas, múltiplas, grandes e com rotatividade, bem como na proibição de termos enganosos nas embalagens. Porém, é preciso dar mais atenção a outras disposições sobre a embalagem e a etiquetagem dos produtos de tabaco, com foco na implementação de embalagens padronizadas.

Laws and regulations governing rotation of health warning labels on cigarette packs in the Region of the Americas / Leyes y regulaciones que rigen la rotación de las etiquetas con advertencias sanitarias en los paquetes de cigarrillos en la Región de las Américas / Leis e regulamentações que regem a rotatividade das advertências sanitárias em embalagens de cigarro na Região das Américas

ABSTRACT Objectives. To provide detailed information about how countries in the Region of the Americas are fulfilling the requirements set out in the guidelines for the implementation of Article 11 of the WHO Framework Convention on Tobacco Control in relation to the rotation of health warning labels and to identify possible challenges in the implementation of the laws or regulations governing the rotation. Methods. We first searched for and identified all the relevant laws or regulations pertaining to health warning labels on cigarette packs in 24 countries and territories in the Region of the Americas. We then analyzed these documents to see whether the requirements in the guidelines of the WHO Convention were being met, identifying similarities and differences across countries. Results. We found that the majority of countries (18/24) rotate the warning labels within the 12-36 month period recommended by the WHO Convention, and about half (13/24) have sets of 8 to 12 warning labels, thus complying with the additional regional guidance, which adds other stipulations. Across the Region, there is variability regarding transition periods between sets, which range from 1 to 6 months. In the majority of countries, the leading authority in charge of warnings is the Ministry of Health. Conclusions. Our analysis shows that even when countries' laws meet the requirements of the WHO Convention, there are still challenges. Most countries' laws require future legislation or regulations to be adopted before new iterations of warnings can come into effect. If legal instruments are not adopted in a timely fashion - which is occurring in many countries - new warning labels are not implemented on time, and message fatigue becomes a risk.

RESUMEN Objetivos. Proporcionar información detallada sobre cómo los países de la Región de las Américas están cumpliendo con los requisitos establecidos en las directrices para la aplicación del artículo 11 del Convenio Marco de la OMS para el Control del Tabaco en lo relativo a la rotación de las etiquetas con advertencias sanitarias, e determinar cuáles son los posibles retos en la aplicación de las leyes o regulaciones que rigen esta rotación. Métodos. En primer lugar, se buscaron las leyes o regulaciones pertinentes relacionadas con las etiquetas de advertencia sanitaria en los paquetes de cigarrillos en 24 países y territorios de la Región de las Américas y se indicó cuáles eran. A continuación, se analizaron estos documentos para comprobar si se cumplían los requisitos de las directrices del Convenio Marco de la OMS, y se señalaron las similitudes y las diferencias entre los países. Resultados. Se determinó que la mayoría de los países (18/24) rotan las etiquetas de advertencia en el período de 12 a 36 meses que se recomienda en el Convenio Marco de la OMS, y aproximadamente la mitad (13/24) disponen de conjuntos de 8 a 12 etiquetas de advertencia, de modo que también cumplen con la orientación regional, que añade otras estipulaciones. En los distintos países de la Región existe variabilidad con respecto al período de transición entre los conjuntos de etiquetas, y este oscila entre 1 y 6 meses. En la mayoría de los países, la principal autoridad encargada de las advertencias es el Ministerio de Salud. Conclusiones. Este análisis muestra que incluso cuando las leyes de los países cumplen con los requisitos del Convenio Marco de la OMS, persisten los retos. Las leyes de la mayoría de los países requieren que en el futuro se adopten leyes o regulaciones antes de que puedan entrar en vigor nuevas iteraciones de advertencias. Si no se adoptan de manera oportuna los instrumentos jurídicos, como está ocurriendo en muchos países, las nuevas etiquetas de advertencia no se aplican a tiempo y se corre el riesgo de que el mensaje cause una sensación de hartazgo.

RESUMO Objetivos. Fornecer informações detalhadas sobre o cumprimento, pelos países da Região das Américas, dos requisitos estabelecidos nas diretrizes para a implementação do Artigo 11 da Convenção-Quadro da OMS para o Controle do Tabaco em relação à rotatividade das advertências sanitárias, bem como identificar possíveis desafios na implementação das leis ou regulamentações que regem a rotatividade. Métodos. Inicialmente, pesquisamos e identificamos todas as leis ou regulamentações relativas a advertências sanitárias em embalagens de cigarro em 24 países e territórios da Região das Américas. Em seguida, analisamos esses documentos para verificar se os requisitos das diretrizes da Convenção-Quadro da OMS estavam sendo cumpridos, identificando semelhanças e diferenças entre os países. Resultados. Constatamos que a maioria dos países (18/24) aplica a rotatividade das advertências no período de 12 a 36 meses, conforme recomendado pela Convenção-Quadro da OMS, e cerca de metade (13/24) dispõe de conjuntos de 8 a 12 advertências, cumprindo assim a orientação regional complementar, que acrescenta outras estipulações. Na Região, o período de transição entre os conjuntos varia de 1 a 6 meses. Na maioria dos países, a principal autoridade responsável pelas advertências é o Ministério da Saúde. Conclusões. Nossa análise mostra que, mesmo quando as leis nacionais satisfazem os requisitos da Convenção-Quadro da OMS, ainda há desafios. A legislação da maioria dos países exige que as novas leis ou regulamentações entrem em vigor antes do início de novos ciclos de advertências. Caso os instrumentos legais não sejam adotados em tempo hábil — o que vem ocorrendo em muitos países — as novas etiquetas de advertência não são implementadas a tempo, com o consequente risco de fadiga da mensagem.

Estudio estructural y supramolecular del ácido 2-E-((4-hidroxifenil) diazenil) benzoico / Structural and supramolecular study of 2- E -((4-hy-droxyphenyl) diazenyl) benzoic acid / Estudo estrutural e supramolecular do composto ácido 2- E -((4-hidroxifenil) diazenil) benzoico

Resumen La estructura cristalina del compuesto ácido 2-E-((4-hidroxifenil) diazenil) benzoico se resolvió por medio del método de fase intrínseca usando datos de difracción de rayos X de monocristal, encontrando que la molécula cristaliza en el sistema cristalino ortorrómbico con grupo espacial Pbca. Dentro de su celda unidad hay cuatro moléculas por unidad asimétrica que son confórmeros moleculares. Estos confórmeros forman hélices beta a lo largo de la dirección [010]. A partir de los datos estructurales se realizó el cálculo de superficies de Hirshfeld determinando, a partir de ellas, sus correspondientes diagramas de huellas dactilares bidimensionales, lo que permitió estudiar las interacciones intermoleculares que más contribuyen al empaquetamiento cristalino. Así, se pudo determinar que la principal contribución a la superficie general está dada por los contactos H•••H (34,8%), seguida de interacciones O•••H/ H•••O (27%) y C•••H/H•••C (18,6%). También fueron calculadas las redes energéticas de interacción con un nivel de teoría DFT/B3LYP/6-31G(d,p), permitiendo cuantificar los valores de cada componente que aportan a la energía total, siendo las interacciones de dispersión (-57,5 kJ/mol) las que más contribuyen en la formación del empaquetamiento cristalino para este compuesto.

Abstract The crystalline structure of 2-E-((4-hydroxyphenyl) diazenil) benzoic acid compound was solved by intrinsic phase method using single-crystal X-ray diffraction data. The molecule crystallizes in the orthorhombic Pbca space group. in the unit cell four molecular conformers of the compound per asymmetric unit are observed, which are forming beta helix arrangement along [010] direction. Hirshfeld surface calculation was performed to determine the intermolecular interactions that contribute to the crystal packing. it was possible to observe that the main contribution to the general surface is given by the contacts H ••• H (34.8%), followed by interactions O ••• H/H ••• O (27%) and C ••• H/H ••• C (18.6%). The energy interaction networks were calculated at a DFT/B3LYP/6-31G(d,p) level, allowing to quantify the high participation of dispersion interactions (-57.5 kJ/mol) in the formation of crystal packing.

Resumo A estrutura cristalina do composto ácido 2-E-((4-hidroxifenil) diazenil) benzóico foi resolvida pelo método da fase intrínseca usando dados de difração de raios X de cristal único, constatando que a molécula cristaliza no sistema cristalino ortorrômbico com grupo espacial Pbca. Dentro de sua cela unitária, existem quatro moléculas por unidade assimétrica, que são isômeros moleculares. Esses isômeros formam hélices beta na direção [010]. A partir dos dados estruturais, foi realizado o cálculo das superfícies de Hirshfeld determinando a partir delas seus respetivos diagramas bidimensionais das impressões digitais, o que permitiu estudar as interações intermoleculares que mais contribuem para o empacotamento cristalino. Assim, foi determinado que a principal contribuição para a superfície geral é dada pelos contatos H ••• H (34,8%), seguidos pelas interações O ••• H / H••• O (27%) e C ••• H / H ••• C (18,6%). Também foram calculadas as redes de energia de interação com um nível de teoria DFT/B3LYP/6-31G(d,p), permitindo quantificar a alta participação de interações de dispersão (-57,5 kJ / mol) na formação do empacotamento cristalino para este composto.

Body packing: tráfico de drogas y cirugía. Reporte de un caso / Body packing: drug traffic and surgery. Case report

Resumen Objetivo: Exponer el caso de un paciente con intoxicación aguda por cocaína en contexto de un body packing syndrome, considerando sus aspectos médico-quirúrgicos y legales. Materiales y Método: Se obtuvo la ficha clínica, con resguardo de anonimato, de un paciente que acude al servicio de urgencia (SU) y que es intervenido y evolucionando posteriormente en el Hospital el Pino de San Bernardo, Chile. Resultados: Paciente fue sometido a una gastrotomía, una enterotomía y una colotomía después de haber sido estabilizado por paro cardiorrespiratorio presentado en SU. Es trasladado a unidad de cuidados intensivos (UCI) donde evoluciona desfavorablemente. Discusión: El body packing syndrome es una entidad clínica infrecuente que, en la minoría de los casos, puede presentar complicaciones severas que requieren de un tratamiento médico-quirúrgico inmediato. Conclusión: Considerando que tanto el consumo como el tráfico de drogas se mantienen como un importante problema de salud pública y que sus consecuencias pueden ser devastadoras, es importante tener conocimiento sobre el tema.

Aim: To present the case of a patient with acute cocaine intoxication in the context of body packing syndrome, taking into consideration its medical-surgical and legal aspects. Materials and Method: A clinical record with anonymity protection was obtained, from a patient who was admitted to the emergency room and who was subsequently operated on and managed at Hospital El Pino in San Bernardo, Chile. Results: Patient underwent a gastrotomy, an enterotomy and a colotomy after being stabilized from a cardiorespiratory arrest in the emergency room. He was transferred to the Intensive Care Unit (ICU) where he evolved unfavorably. Discussion: Body packing is an infrequent clinical entity that, in a few cases, may develop severe complications that require immediate medical-surgical treatment, in addition to notification to authorities. Conclusion: Considering that both drug use and traffick remain as an important public health concern and that as its consequences may be devastating, it is important to have a knowledge on the subject.

Abdominal and thoracic wall closure: damage control surgery's cinderella / El cierre de la pared abdominal y torácica: La cenicienta en la cirugía control de daños

Abstract Damage control surgery principles allow delayed management of traumatic lesions and early metabolic resuscitation by performing abbreviated procedures and prompt resuscitation maneuvers in severely injured trauma patients. However, the initial physiological response to trauma and surgery, along with the hemostatic resuscitation efforts, causes important side effects on intracavitary organs such as tissue edema, increased cavity pressure, and hemodynamic collapse. Consequently, different techniques have been developed over the years for a delayed cavity closure. Nonetheless, the optimal management of abdominal and thoracic surgical closure remains controversial. This article aims to describe the indications and surgical techniques for delayed abdominal or thoracic closure following damage control surgery in severely injured trauma patients, based on the experience obtained by the Trauma and Emergency Surgery Group (CTE) of Cali, Colombia. We recommend negative pressure dressing as the gold standard technique for delayed cavity closure, associated with higher wall closure success rates and lower complication and mortality rates.

Uso de profilaxis antibiótica en el taponamiento nasal, una revisión actualizada

Resumen El uso de profilaxis antibiótica en el taponamiento nasal es una práctica ampliamente usada por el eventual riesgo de síndrome de shock tóxico o complicaciones infecciosas locales. En los últimos años, se ha cuestionado su real impacto tomando en cuenta los riesgos asociados al uso de antibióticos y la baja o casi nula incidencia de las complicaciones infecciosas. Se realizó una revisión exhaustiva de la literatura sobre el uso de profilaxis antibiótica en taponamiento nasal. Se observó que no existían diferencias estadísticamente significativas en la incidencia de complicaciones infecciosas y no hubo reportes de síndrome de shock tóxico en ninguno de los grupos con y sin profilaxis antibiótica. No hubo diferencias significativas en los cultivos de los pacientes con o sin antibióticos en taponamiento nasal por epistaxis. El uso de profilaxis antibiótica en taponamiento nasal es una práctica cuestionable y se requieren más estudios al respecto.

Abstract Antibiotic prophylaxis in nasal packing is a widely used practice due to the possible risk of toxic shock syndrome and infectious complications. Lately, its real impact has been questioned due to the associated risks with antibiotic use and low incidence of infectious complications. A comprehensive review of the literature on the use of antibiotic prophylaxis in nasal packing was performed. No statistically significant differences in the incidence of infectious complications and no reports of toxic shock syndrome were reported in any of the groups with and without antibiotic prophylaxis. There were no significant differences in the antibiotic cultures of patients with or without prophylactic antibiotics in nasal packing due to epistaxis. The use of antibiotic prophylaxis in nasal packing is a questionable practice and further studies are required.

Migration of eleven DSD-FWAs from packaging paper to food / 预防医学

Objective@#To observe the migration of 4,4＇-diaminostilbene-2,2＇-disulfonc acid-based fluorescent whitening agents ( DSD-FWAs ) in food packaging paper, so as to provide evidence for quality and safety supervision for paper packaging materials.@*Methods@#Forty-one paper samples with DSD-FWAs positive were made into 6 cm2 pieces and were soaked in four food simulants ( distilled water, 3% acetic acid, 10% ethanol and 95% ethanol, 10 mL each ). The experiment was carried out at the specified soaking temperature and time. The migration amounts of eleven DSD-FWAs were detected by high performance liquid chromatography-fluorescence detection. @*Results@#C.I.220, C.I.24, C.I.210, C.I.85, C.I.113, C.I.264, C.I.353 and C.I.357 were found in all the four food simulants. At the same time and temperature, the migration amount was highest in 10% ethanol, followed by distilled water, 3% acetic acid and 95% ethanol. C.I.220 was dissolved in all four food simulants, in the range of 20-90 ℃, the migration amount increased with soaking temperature; at 20 ℃, 40 ℃ and 60 ℃, the migration amount increased first and then stabilized over time.@*Conclusion@#The higher the storage temperature and the longer the storage time of paper packaging, the easier the DSD-FWAs in packaging paper migrate to food.

Effect of different absorbable anastomotic stoma packing materials on endonasal endoscopic dacryocystorhinostomy / 国际眼科杂志(Guoji Yanke Zazhi)

@#AIM:To compare the effect of self-crosslinking sodium hyaluronic gel, Nasopore, and gelatin sponge in endonasal endoscopic dacryocystorhinostomy(En-DCR).<p>METHODS:Totally 72 patients(90 eyes)of chronic dacryocystitis admitted to our hospital from June 2019 to June 2020, and randomly divide them into three groups. Self-crosslinking sodium hyaluronic gel(group A), Nasopore(group B), and gelfoam(group C)were used during the En-DCR. Comfort level, bleeding, complication and epiphora, lacrimal situation were observed 2wk, 1, 2, 3, 6mo after surgery. Comparison of cure rate and effective rate.<p>RESULTS: The patients were followed up for 6mo after operation. The cure rate of lacrimal system reconstruction was 97% in group A, 89% in group B and 94% in group C. There was no meaningful statistical difference among the three groups(<i>P</i>>0.05). The effective rate of lacrimal system reconstruction was 91% in group A, 56% in group B and 87% in group C(<i>P</i><0.05). There was significant statistical difference between groups A and B or between groups B and C(<i>P</i><0.0167), however, there was no meaningful statistical difference between groups A and C(<i>P</i>>0.0167). Postoperative comfort level was better and bleeding was more severe in the group of A than in group B(<i>P</i><0.0167). In terms of complications, there was less scar proliferation in group A than in group B(<i>P</i><0.0167), the rate of synechiae in groups A and B was higher than in group C(<i>P</i><0.0167).<p>CONCLUSION:Intraoperative application of self-crosslinking sodium hyaluronic gel to packing the anastomotic stoma makes the procedure simple and can effectively inhibit scar proliferation and conducive to the epithelialization of the anastomotic stoma, improve the cure rate of En-DCR. In addition, with more comfort. It is a simple, safe, comfortable and efficient absorbable anastomotic stoma packing material.

The effect of preperitoneal pelvic packing for hemodynamically unstable patients with pelvic fractures / 中华创伤杂志(英文版)

PURPOSE@#Hemodynamically unstable patients with pelvic fractures still represent a challenge to trauma surgeons and have a very high mortality. This study was designed to explore the effect of the interventions of direct preperitoneal pelvic packing for the hemodynamically unstable pelvic fractures.@*METHODS@#This retrospective study enrolled 67 cases of severe pelvic fractures with unstable hemodynamics from October 2011 to December 2019. All patients presented in our emergency center and received preperitoneal pelvic packing were included in this study. The indication was persistent systolic blood pressure ≤90 mmHg during initial resuscitation and after transfusion of two units of red blood cells. Patients with hemodynamic stability who need no preperitoneal pelvic packing to control bleeding were excluded. Their demographic characteristics, clinical features, laboratory results, therapeutic interventions, adverse events, and prognostic outcomes were collected from digital information system of electronic medical records. Statistics were described as mean ± standard deviation or medium and analyzed using pair sample t-test or Mann-Whitney U-test.@*RESULTS@#The patients' average age was 41.6 years, ranging from 10 to 88 years. Among them, 45 cases were male (67.2%) and 22 cases were female (32.8%). Significant difference was found regarding the systolic blood pressure (mmHg) in the emergency department (78.4 ± 13.9) and after preperitoneal pelvic packing in the surgery intensive care unit (100.1 ± 17.6) (p < 0.05). Simultaneously, the arterial base deficit (mmol/L) were significantly lower in the surgery intensive care unit (median -6, interquartile range -8 to -2) than in the emergency department (median -10, interquartile range -14 to -8) (p < 0.05). After preperitoneal pelvic packing, 15 patients (22.4%) underwent pelvic angiography for persistent hypotension or suspected ongoing haemorrhage. The overall mortality rate was 29.5% (20 of 67).@*CONCLUSIONS@#Preperitoneal pelvic packing, as a useful surgical technique, is less invasive and can be very efficient in early intra-pelvic bleed control.

Impact of Particle Size on Density of Binary Powder Mixture of Chinese Medicine / 中国实验方剂学杂志

Objective:To investigate the influence of particle size on density of binary powder mixture of traditional Chinese medicine （TCM）， and to provide reference for formulation design of TCM preparations. Method:Three groups of binary powder mixtures with different particle size ratio （<italic>α</italic>） were constructed， namely Oroxyli Semen-microcrystalline cellulose PH102 （MCC PH102） （<italic>α</italic>=0.071 7）， Stellariae Radix-MCC PH200 （<italic>α</italic>=0.158 7） and Angelicae Sinensis Radix-MCC KG802 （<italic>α</italic>=0.840 6）. Binary powder mixtures with nine mass ratios （90∶10， 80∶20， 70∶30， 60∶40， 50∶50， 40∶60， 30∶70， 20∶80 and 10∶90） were prepared for each group， and 27 binary powder mixtures containing TCM were obtained. The particle size distribution， density and other parameters of six single materials and 27 binary powder mixtures were characterized. Based on the packing theory and multivariate analysis， the effects of particle size related parameters on the filling structure and density of the binary powder mixtures were elucidated. Result:The <italic>α</italic> of Angelicae Sinensis Radix-MCC KG802 binary mixture system was larger than the replacement rate （<italic>α</italic>_r=0.741 0）， and its density had a good linear relationship with the mass ratio， which conformed to the replacement mechanism. The <italic>α</italic> of Oroxyli Semen-MCC PH102 binary mixture system was smaller than the critical ratio （<italic>α</italic>_c=0.154 0）， and its density was nonlinear with the mass ratio of components， which conformed to the filling mechanism. The <italic>α</italic> of Stellariae Radix-MCC PH200 binary mixture system was between <italic>α</italic>_c and <italic>α</italic>_r， its density was affected by both of replacement mechanism and filling mechanism. Based on the partial least squares （PLS） model， the variable importance in the projection （VIP） analysis further proved that the mixing mass ratio （VIP value=1.62）， <italic>α</italic> （VIP value=1.13） and <italic>D</italic>₁₀ （the corresponding particle size when the particle size distribution accumulated to 10%， VIP value=1.06） were the key factors affecting the density of binary powder mixtures of TCM. Conclusion:In the binary powder mixtures of TCM， the linearity relationship between density and mass ratio is largely depended on particle size difference of components.

Evaluación de carga física en los procesos de empacado de fruta en empresas de la provincia de río negro en la patagonia, argentina

Introducción. Este estudio observacional de corte transversal describió el análisis realizado con una población de ocho operarios, para valorar la exposición a carga física de los trabajadores de la actividad de empaque de fruta en la provincia de Río Negro, Argentina. Métodos. El análisis que se efectuó con los métodos manuales RULA y Check List OCRA, favoreció la evaluación de la exposición a factores de riesgo que pueden ocasionar trastornos en miembros superiores. Resultados. La carga física en las actividades de selección y empaque de fruta alcanzan niveles críticos en movimientos y esfuerzos, están relacionados con más de 15 enfermedades de acuerdo con la OIT y la legislación argentina. Para disminuir el nivel de riesgo, se recomendaron tiempos de descanso, rotación de personal, apoyos corporales adecuados, entre otros. Conclusión. Se recomienda evaluar el proceso de manera sistémica para proponer una intervención integral que mejore el bienestar de los operarios.

Introduction. This cross-sectional observational study described the analysis carried out with a population of eight operators to assess the exposure of fruit packing workers to a physical load in the Rio Negro province, Argentina. Materials and methods. The analysis carried out with the RULA and OCRA Checklist manual methods favored assessing exposure to risk factors that can cause upper limb disorders. Results. According to the ILO and Argentine legislation, the physical load in the fruit selection and packing activities reaches critical levels in movements and efforts; they are related to more than 15 diseases. Breaks, staff rotation, adequate body support, among others, are recommended to reduce the level of risk. Conclusion. It is advisable to assess the process systemically to propose a comprehensive intervention that improves the operators' well-being.

A Novel Method to Decrease Shoulder Tip Pain during Cesarean Section

Objective:To investigate the efficacy of the placement of two towels around uterus before delivery of fetes upon the incidence of intraoperative shoulder tip pain (STP) during cesarean section.Methods:Two hundred and sixty parturient were scheduled to undergo elective cesarean section under spinal anesthesia were randomized to do packing around the uterus before uterine incision or placebo (control group). The primary outcome was the incidence of intraoperative shoulder pain. Secondary outcomes were operative time, amount of intraoperative blood loss, incidence of hypotension, and the Need of post-opertive morphine.Results:Shoulder tip pain was recorded only in 7 cases (5.4%) in towel placement group compared to 25 cases (19.2%) in placebo group (P value, 0.001). The need of post-operative morphine was statistically significant lower in Towel placement group (33.8%) compared to (47.7%) in control group (P value, 0.023).Conclusion:Packing around the uterus just before uterine incision decreases the incidence and severity of intraoperative shoulder pain in patients undergoing cesarean section

Abdominal perineal resection surgery: case report

Colorectal cancer in known to be the most diagnosed cancer in the world, the set gold standard for the treatment of colorectal cancer is excision of the tumor via surgery. There is different type of surgeries that tend to be performed depending on the location, size and extent of the mass in order to avoid recurrence. The main aim of this paper is to discuss the abdominal perineal resection surgery together with the complications faced and criteria in managing these complications intraoperatively.

Effect of infiltrating nasal packing with local anesthetics in postoperative pain and anxiety following sinonasal surgeries: a systemic review and meta-analysis / Efeito do tamponamento nasal infiltrado com anestésicos locais na dor e ansiedade pós-operatórias após cirurgias nasosinusais: revisão sistêmica e metanálise

Abstract Introduction: Packing of the nasal cavity has traditionally been used for postoperative bleeding control and decreasing synechia formation in patients undergoing nasal surgeries. Although absorbable nasal packing has been gaining popularity in the recent years, nonabsorbable nasal packing is still often used in nasal surgeries in various parts of the world. It is known to be associated with pain and discomfort especially upon and during removal, and previous reviews have only evaluated the effects of local anesthetic infiltration of nasal packing in septal surgeries. Objective: To evaluate the effect of infiltrating nasal packing with local anesthetics in postoperative pain and anxiety following sinonasal surgeries Materials and methods: We searched the PubMed and Embase databases from their earliest record to April 27, 2019, randomized controlled trials and prospective controlled trials for review, and included only randomized controlled trials for data analysis. We included studies using topical anesthetics-infiltrated nasal packing following sinonasal surgeries and evaluated the effectiveness compared to placebo packing in pain reduction during postoperative follow up, as well as the effectiveness in anxiety reduction. Results: Among 15 studies included for review, 9 studies involving 765 participants contributed to the meta-analysis. In terms of pain reduction, our analysis showed significant standard mean differences regarding effectiveness at postoperative 1, 12, 24 h interval for all surgical groups combined, in the sinus surgery group, as well as during nasal packing removal. There was no consistent evidence to support the effectiveness in anxiety reduction. Conclusions: Our study supports anesthetics infiltration of nasal packing as an effective method in managing pain in patients with nasal packing after sinonasal surgeries. However, the level of evidence is low. More high-quality randomized controlled trials are needed to establish its effectiveness in reducing anxiety. We believe this review is of great clinical significance due to the vast patient population undergoing sinonasal surgeries. Postoperative local hemorrhage remains the greatest concern for ear nose and throat surgeons due to the rich vasculature of the nose and sinuses. Sinonasal packing provides structural support and serves as an important measure for hemostasis and synechia formation. Although absorbable packing has been gaining popularity in the recent years, nonabsorable packing materials are still used in many countries due to lower cost. Infiltration of nasal packing with local anesthetic provides a solution to the discomfort, nasal pressure and nasal pain experienced commonly by the patients as evidenced by our analysis.

Resumo Introdução: O tamponamento da cavidade nasal tem sido usado tradicionalmente para controle do sangramento pós-operatório e diminuição da formação de sinéquia em pacientes submetidos a cirurgias nasais. Embora o tamponamento nasal absorvível tenha ganhado popularidade nos últimos anos, o tampão nasal não absorvível ainda é frequentemente usado em várias partes do mundo. Sabe-se que o tamponamento está associado a dor e desconforto, especialmente na sua remoção, e revisões anteriores avaliaram apenas os efeitos do tampão com anestésico local em cirurgias do septo nasal. Objetivo: Avaliar o efeito do tamponamento nasal infiltrado com anestésicos locais na dor e ansiedade pós-operatórias após cirurgias nasosinusais. Material e métodos: Para a revisão, pesquisamos nos bancos de dados PubMed e Embase desde o registro mais antigo até 27 de abril de 2019, incluímos ensaios clínicos controlados e randomizados, a ensaios clínicos prospectivos controlados e apenas ensaios clínicos controlados e randomizados para análise de dados. Incluímos estudos que usaram tamponamento nasal infiltrado com anestésicos tópicos após cirurgias nasosinusais e avaliamos a eficácia em comparação com o tamponamento com placebo na redução da dor durante o acompanhamento pós-operatório, bem como os efeitos na redução da ansiedade. Resultados: Entre os 15 estudos incluídos, 9, que envolveram 765 participantes, contribuíram para a metanálise. Em termos de redução da dor, nossa análise mostrou diferenças médias padrão significantes em relação à eficácia no pós-operatório nos intervalos de 1, 12, 24 horas para todos os grupos cirúrgicos combinados, no grupo da cirurgia sinusal e durante a remoção do tamponamento nasal. Não houve evidências consistentes para apoiar a eficácia na redução da ansiedade. Conclusões: Nosso estudo apoia o uso de tamponamentos nasais infiltrados com anestésicos locais como um método eficaz no tratamento da dor em pacientes após cirurgias nasosinusais. No entanto, o nível de evidência é baixo. São necessários mais ensaios clínicos randomizados de alta qualidade para estabelecer sua eficácia na redução da ansiedade. Acreditamos que esta revisão seja de grande significado clínico devido à vasta população submetida a cirurgias nasosinusais. A hemorragia local pós-operatória continua a ser a maior preocupação para os cirurgiões otorrinolaringológicos devido à rica vasculatura do nariz e seios nasais. O tamponamento nasosinusal fornece suporte estrutural e serve como uma medida importante para a hemostasia e formação de sinéquias. Embora o tamponamento absorvível tenha ganhado popularidade nos últimos anos, os materiais de tamponamento não absorvíveis ainda são usados em muitos países devido ao menor custo. A infiltração do tamponamento nasal com anestésicos locais fornece uma solução para desconforto, pressão e dor nasal comumente referida pelos pacientes, como evidenciado por nossa análise.

Complication rates in managing hepatic trauma: a cross-sectional study stratifying their outcomes

Background: Liver trauma is the most commonly observed injured organ in abdominal trauma. The objectives of this study was to determine and evaluate the rates of complication in the management of liver traumaMethods: This cross-sectional observational study using non-probability convenient sampling technique was done at surgical unit of Liaquat University of Medical and Health Sciences, Jamshoro, for 06 months. After ethical approval from Institute’s Institutional Review Board (IRB), patients presenting to surgical emergency of the hospital between ages 16 to 60 years having blunt or penetrating liver trauma within 04 hours of incident, either road traffic accident, sustaining a fall, sporting injury, knife or stab wound were include while patients of liver trauma conservatively managed or had severe co-morbid, not fit for anesthesia, with multiple organs lesions (polytrauma) and all hepatic injury patients that were hemo-dynamically stable were excluded. SPSS version 23 was used for data analysis keeping p-value <0.05 as significant.Results: Among 136 patients with mean age 32.33±11.23 years, 120(88.2%) were males. 122(89.7%) of the patients were admitted due to liver trauma of blunt variety while 14(10%) with penetrating liver injury. Overall mean duration of hospital stay was 13.1±4.58 days. 41(30%) patients reported intra-abdominal sepsis, followed by recurrent hemorrhage in 33(24%) of patients while in 22(16%) of patients, biliary leakage was observed. An insignificant difference persisted in either surgical intervention in terms of the complication rates.Conclusions: Higher complication rates were observed in patients with peri-hepatic packing, however outcome of both surgical techniques in terms of complication rates were found to be insignificant. Further studies are needed to shed light upon the findings or this study.