Past, Present, and Future of Copper Mine Tailings Governance in Chile (1905-2022): A Review in One of the Leading Mining Countries in the World.

How mine tailings storage facilities (TSF) are managed reflects the history, regulatory framework, and environment of a country and locale of the mine. Despite many attempts to find an environmentally friendly strategy for tailings management and governance that balances the needs of society and the ecosystem, there is no worldwide agreement regarding the best practices for tailings management and governance. This article reviews the evolution of copper tailings management and governance in Chile, current practices, and changes that could be or may need to be made to improve practices in response to local environmental conditions and local tolerance for risk. The progress to date in developing a holistic tailings management strategy is summarized. This article also describes recent proposals for the best available technologies (BATs), case histories of Chilean TSF using conventional technology, thickened tailings, paste tailings, filtered tailings, water use reduction, tailings reprocessing to obtain rare earth elements (REEs), circular economy, submarine deep-sea tailings disposal, and ways to avoid failure in a seismic region. Finally, the Chilean tailings industry's pending issues and future challenges in reducing the socioenvironmental impacts of tailings are presented, including advances made and lessons learned in developing more environmentally friendly solutions.

Aproximaciones psicoterapéuticas para el manejo del tinnitus crónico no pulsátil / Psychotherapy approaches for the management of non-pulsatile chronic tinnitus

Resumen La fisiopatología del tinnitus crónico no pulsátil es poco clara, pero se reconoce un componente psicológico relevante, por tanto, existen distintas aproximaciones psicoterapéuticas que han sido estudiadas. La terapia cognitivo conductual es la que cuenta con mayor evidencia. Ella contempla la reestructuración de las cogniciones disfuncionales que favorecen la presencia del tinnitus. Se ha verificado su eficacia en los niveles de distrés, calidad de vida, severidad, sintomatología depresiva e insomnio asociados. La desensibilización y reprocesamiento por movimientos oculares recoge algunos presupuestos de la terapia cognitivo conductual, pero considera técnicas como la estimulación bilateral. Sus resultados en patologías crónicas somáticas han sugerido la aplicación en tinnitus, corroborando su eficacia en calidad de vida, distrés y sintomatología depresiva. Dos psicoterapias basadas en mindfulness aplicadas en tinnitus son la reducción del estrés basado en el mindfulness y la terapia cognitiva basada en mindfulness. La primera ha demostrado eficacia en la calidad de vida y en la disminución y el refuerzo de cogniciones negativas y positivas, respectivamente. La segunda, es eficaz en la severidad, intensidad, distrés, ansiedad, depresión y discapacidad asociadas a tinnitus. Finalmente, la terapia de aceptación y compromiso promueve la aceptación como componente central del tratamiento de condiciones crónicas, considerando el control que ejerce el contexto sobre la vivencia de estas condiciones y el compromiso terapéutico. Esta terapia es eficaz en calidad de vida. Se promueve la investigación en aproximaciones psicoterapéuticas para el tinnitus, lo que posibilitará la aplicación de terapias más específicas y la clarificación de su fisiopatología.

Abstract The pathophysiology of non-pulsatile chronic tinnitus is unclear, but it is recognized a relevant psychological component. In this sense, different psychotherapeutic approaches have been studied. Cognitive behavioral therapy is the psychotherapy with the most evidence. It considers the restructuring of dysfunctional cognitions that favor the presence of tinnitus. Its efficacy has been verified on distress, quality of life, severity, associated depressive symptoms and insomnia. Eye movement desensitization and reprocessing includes some conceptions of cognitive behavioral therapy and considers techniques such as bilateral stimulation. Its results in chronic somatic pathologies have suggested its application in tinnitus, corroborating its efficacy in quality of life, distress, and depressive symptoms. Two mindfulness-based psychotherapies applied in tinnitus are mindfulness-based stress reduction and mindfulness-based cognitive therapy. The first has shown efficacy on quality of life and reduction and reinforcement of negative and positive cognitions, respectively. The second is effective on severity, loudness, distress, anxiety, depression and disability associated with tinnitus. Finally, acceptance and commitment therapy promote acceptance as a central component of the treatment of chronic conditions, considering the control exerted by the context over the experience of these conditions and the therapeutic commitment. This therapy is effective on quality of life. We foster the research on psychotherapeutic approaches to tinnitus, which will make it possible the application of more specific interventions and, at the same time, elucidate its pathophysiology.

Leaching of rare earth elements from phosphogypsum.

High amounts of phosphogypsum (PG) are generated in the production of phosphoric acid. Previous literature demonstrates that obtaining rare earth elements (REE) from PG is a promising alternative to managing this waste. However, the reported leaching efficiencies are low in most cases, or drastic leaching conditions are required. Therefore, this work aimed to study the leaching conditions of REE from PG to obtain high leaching efficiency values. Initially, a 24 factorial experimental design investigated the factors that affect the conventional acid leaching of REE from PG (leaching acid (citric and sulfuric acid), solid/liquid ratio, acid concentration, and temperature). Better leaching efficiency values of the sum of all REE (62.0% and 89.7% for citric and sulfuric acid, respectively) were obtained using an acid concentration of 3 mol L-1, solid/liquid ratio of 1/20 g mL-1, and temperature of 80 °C. Subsequently, the experiments optimization, performed through a central composite rotational design, indicated that the maximum leaching efficiency was achieved using a sulfuric acid concentration of 2.9 mol L-1, solid/liquid ratio of 1.7/20 g mL-1, and 55 °C. Under these conditions, the leaching efficiency of the sum of all REE was 90.0%. Leaching kinetics results showed that the equilibrium was reached in about 20 min for most REE. The mechanism investigation suggested that surface chemical reaction and diffusion through the boundary layer controlled the leaching.

Desensibilización y reprocesamiento por movimientos oculares (EMDR) para trastornos ansiosos y depresivos en niños y adolescentes: revisión de la evidencia disponible / Eye movement desensitization and reprocessing (EMDR) for anxiety and depressive disorders in children and adolescents: a review of the available literature

Resumen Introducción: la desensibilización y reprocesamiento por movimientos oculares (EMDR) tiene abundante evidencia de eficacia en desórdenes del espectro traumático. Su eficacia en trastornos ansiosos (TA) y depresivos (TD) en niños, niñas y adolescentes ha sido escasamente estudiada. Método: se realizó una revisión narrativa para describir la evidencia disponible sobre eficacia de EMDR en TA y TD en población infantojuvenil. Se buscaron artículos disponibles en PubMed/Medline, SciELO, PsycINFO y Cochrane Library. Se incluyeron todos los artículos primarios y secundarios que evaluaron el efecto de EMDR en TA y TD en población infantojuvenil. Se revisaron sus referencias como segundo método de inclusión. Resultados: se identificaron nueve estudios (cinco en TA y cuatro en TD); tres fueron observacionales y seis experimentales. Todos tuvieron tamaños muestrales reducidos. En TA, los estudios corroboraron la eficacia de EMDR sobre el temor fóbico en fobia a las arañas, pero no sobre la conducta evitativa, donde sería superior la exposición in vivo. Dos series de casos expusieron la utilidad de EMDR en fagogobia y en TA asociados a epilepsia. En TD, EMDR fue eficaz en la reducción de sintomatología depresiva en el contexto del trastorno depresivo mayor, trastorno de estrés agudo y trastornos conductuales. EMDR fue comparable a terapia cognitivo-conductual. Conclusiones: la evidencia corrobora la eficacia de EMDR en TA y TD en niños, niñas y adolescentes. Sin embargo, es muy escasa y cuenta con limitaciones metodológicas. Es necesario realizar estudios experimentales con protocolos estandarizados y especializados de EMDR para TA y TD en población infantojuvenil.

Introduction: Eye movement desensitization and reprocessing (EMDR) has abundant evidence of efficacy in traumatic spectrum disorders. Its efficacy in anxiety disorders (AD) and depressive disorders (DD) in children and adolescents has been scarcely studied. Methods: We conducted a narrative review to describe the available evidence on the efficacy of EMDR in AD and DD in children and adolescents. We searched for articles available in PubMed/Medline, SciELO, PsycInfo and the Cochrane Library. All primary and secondary studies evaluating the effect of EMDR on AD and DD in children and adolescents were included. Their references were reviewed as a second method of inclusion. Results: nine studies were identified (five in AD and four in DD); three were observational and six experimental. All had small sample sizes. In AD, studies corroborated the efficacy of EMDR on phobic fear in spider phobia, but not on avoidance behavior, where in vivo exposure would be superior. Two case series reported the efficacy of EMDR in choking phobia and AD associated with epilepsy. In DD, EMDR was effective in reducing depressive symptomatology in the context of major depressive disorder, acute stress disorder, and conduct disorders. EMDR was comparable to cognitive behavioral therapy. Conclusions: The evidence corroborates the efficacy of EMDR in AD and DD in children and adolescents. However, it is very scarce and has methodological limitations. It is necessary to carry out experimental studies with standardized and specialized EMDR protocols for AD and DD in the child and adolescent population.

Comparación de los desenlaces clínicos con cuatro técnicas de apendicetomía laparoscópica tras la implementación de políticas de reúso de dispositivos médicos / Comparison of clinical outcomes with four laparoscopic appendectomy techniques after implementation of medical devices reuse policy

Resumen Objetivo: En este estudio se comparan los desenlaces clínicos de cuatro técnicas de apendicectomía laparoscópica utilizadas en una institución colombiana para el manejo de la apendicitis aguda tras la adopción de políticas de reúso y reprocesamiento de dispositivos médicos para la Región de las Américas (2014). Materiales y Método: Mediante el análisis de varianza de una vía (ANOVA) y la prueba de Kruskal Wallis, se compararon las tasas de infección de sitio operatorio (ISO), reoperación no planeada, readmisión y mortalidad (en los primeros 30 días del postoperatorio) de las siguientes técnicas: Técnica 1: Ligadura del muñón apendicular con endonudo y disección del mesenterio apendicular con electrocoagulación bipolar convencional; Técnica 2: Clipaje del muñón con endoclip de polímero y disección del mesenterio con electrocoagulación bipolar convencional; Técnica 3: Clipaje del muñón con endoclip de polímero y disección del mesenterio con electrocoagulación monopolar; Técnica 4: Clipaje del muñón y disección roma y ligadura del mesenterio con endoclip de polímero. Resultados: Se incluyeron 551 pacientes. No se encontraron diferencias en los ANOVAs en cuanto a las características demográficas de los pacientes por cada técnica. Los desenlaces globales fueron: ISO (5,44%), reoperación no planeada (3,08%), readmisión (15,97%) y mortalidad (0,18%). Se encontraron diferencias significativas (p < 0,05) en estos desenlaces explicados por mayores tasas de ISO y reoperación con la Técnica-1. Conclusiones: Los desenlaces globales de la apendicectomía laparoscópica tras la adopción de políticas de reúso de dispositivos médicos se encuentran dentro de los aceptados globalmente cuando se utilizan las Técnicas 2-3-4 en poblaciones equivalentes de pacientes con apendicitis aguda. En este contexto, nuestros resultados invitan a utilizar con precaución la Técnica-1.

Aim: The present study sought to compare the clinical outcomes between four operative techniques for laparoscopic appendectomy in a Colombian institution, following the adoption of reuse and reprocessing policies for medical devices in the Region of Americas (2014). Materials and Methods: One-way analysis of variance (ANOVA) and Kruskal Wallis tests were used to compare the rates of Surgical Site Infection (SSI), unplanned reoperation, readmission and mortality (confined to 30 days after surgery) of these operative techniques: Technique 1: Ligature of appendiceal stump with endo stitch plus mesenteric dissection with conventional bipolar electrocoagulation; Technique 2: Clipping of stump with polymer endoclip plus mesenteric dissection with conventional bipolar electrocoagulation; Technique 3: Clipping of stump with polymer endoclip plus mesenteric dissection with monopolar electrocoagulation; Technique 4: Clipping of stump plus mesenteric dissection with polymer endoclip. Results: A total of 551 patients were included. No differences were found in the demographic characteristics of the patients between techniques during ANOVAs. The global outcomes were SSI (5.44%), unplanned reoperation (3.08%), readmission (15.97%) and mortality (0.18%). Significant differences were found (p < 0.05) in these outcomes explained by higher rates of SSI and unplanned reoperation with Technique 1. Conclusions: The overall outcomes of laparoscopic appendectomy, after the adoption of policies for the reuse and reprocessing of medical devices, are similar to those accepted globally when using operative techniques 2-3-4 in equivalent populations of patients with acute appendicitis. In this context, our results invite to use with caution technique-1.

Catheter Reprocessing for Coronary Angiography: It is Not Safe.

BACKGROUND: Coronary angiography and percutaneous coronary intervention are frequently and increasingly performed worldwide. Although catheters for coronary angiography are considered as single-use devices, some people still question this decision. This study evaluated the structural characteristics and thermal stability of new and reprocessed catheters. METHODS: Five catheters (Judkins left) of the same brand and manufacturer were selected for each analysis. We evaluated: new catheters, catheters reprocessed once (first), twice (second), thrice (third), and seven times (seventh). The optical analyses of the proximal, middle and distal parts of the catheters were performed by magnifying glass. Besides, thermogravimetric analyses were done. RESULTS: After reprocessing, the crushing, color changes, folds, dents, deformations, and lumen narrowing were observed; the stainless-steel framework, the external tortuosity, the interlaced mesh of stainless-steel wires and loss of polymeric material were visualized. Thermogravimetric analysis showed lost of mass of the catheters. CONCLUSIONS: This study demonstrated that the structural integrity and mass of catheters are lost with reprocessing. These findings may be caused by several steps of reprocessing; however, regardless of which step or steps were responsible, the presence of structural integrity loss leads to the recommendation of not reusing this type of device.

Conception and validation of a protocol for reuse of non-irrigated electrophysiology catheters in a Brazilian teaching hospital.

PURPOSE: Since the Brazilian current legislation permits the reuse of single-use devices under a validated processing protocol, the main purpose of our study was to develop and validate a method for reusing non-irrigated electrophysiology catheter (EC). METHODS: Manual and mechanical processing by ultrasonic washer was associated with the use of enzymatic solution and hydrogen peroxide with a final rinse with filtered water. Validation of the cleaning process, as well as catheter integrity, was done by observing the ECs in stereoscopic microscope at ×60 magnification, followed by HemoCheck-S® (HCS) test to monitor the presence of residual blood on their surfaces. Ethylene oxide (EO) was used for sterilization, and the final validations of the processing were performed by assays of sterility, pyrogenicity, and EO residuals. Lastly, a cost-minimization study was performed. RESULTS: Cleaning process demonstrated absence of organic material detectable by HCS at the surfaces of the ECs. Assays for sterility were negative, and assays of EO residuals and endotoxins showed levels under established standards. The number of reuses was settled to a maximum of seven uses for the ECs with handle and ten uses for ECS without handle. The cost-minimization study showed an 84% savings, when considering seven reuses. CONCLUSIONS: Processing of ECs was validated at all stages. Therefore, reuse of ECs under the conditions that we designed was considered safe for patients and cost-effective for our institution.

Reutilização do detergente enzimático: avaliação do impacto da contaminação microbiana da solução na efetividade da limpeza de aparelhos endoscópicos gastrointestinais / Enzymatic detergent reuse: evaluation of the impact of the solution's microbial contamination on the cleaning effectiveness of gastrointestinal endoscopes

No Brasil, é recomendado que durante a limpeza dos Produtos para Saúde (PPS) o detergente utilizado possua ação enzimática. Embora a Resolução da Diretoria Colegiada nº 55 de 14 de novembro de 2012 da Agência Nacional de Vigilância Sanitária desaconselhe a reutilização desta solução de limpeza, sabe-se que na prática clínica elas são reaproveitadas por diversas vezes para imersão de PPS, como os aparelhos endoscópicos, o que pode comprometer a efetividade da ação do detergente enzimático e com isso a segurança no processamento do PPS. Esta pesquisa objetivou avaliar a carga microbiana presente na solução de detergente enzimático durante sua reutilização na limpeza manual de aparelhos endoscópicos gastrointestinais. Tratou-se de um estudo transversal realizado em um serviço de endoscopia digestiva de um hospital universitário de Belo Horizonte e no Laboratório de Microbiologia Oral e Anaeróbios do ICB/UFMG. A amostra foi composta por 57 aparelhos endoscópicos e 76 alíquotas de solução de detergente enzimáticos coletadas de diversos reusos de 19 diferentes soluções. O material coletado foi agitado em vórtex, acrescido a Caldo Letheem Modificado e submetido a filtração em membrana Millipore® 0,45µm. A membrana foi depositada em Tryptic Soy Ágar para crescimento microbiano. A identificação presuntiva dos micro-organismos foi realizada manualmente considerando-se aspectos morfotintoriais e reações bioquímico/fisiológicas. As variáveis foram descritas utilizando frequências, porcentagens e medidas de tendência central. O projeto foi aprovado pelo Comitê de Ética e Pesquisa da Universidade Federal de Minas Gerais (CAAE ­ 67493417.1.0000.5149). As médias das cargas microbianas na solução de detergente enzimático variaram de 19,9 UFC/mL após primeiro uso, 51,1 UFC/mL após terceiro uso e 67,1UFC/mL após o quinto reuso. Nos canais de ar/água e biópsia houve aumento de micro-organismos Gram negativos ao longo das reutilizações do detergente. Foram recuperados, Enterobacter spp., Escherichia coli, Klebsiella spp., Pseudomonas spp., Staphyloccocus aureus, Staphyloccocus coagulase negativa. Pseudomonas spp. foi o micro-organismo mais identificado em todas as alíquotas coletadas. Verificou-se a importância da escovação do canal de biópsia para correta remoção de micro-organismos. Conclui-se que a reutilização das soluções de detergente enzimático contribuiu para contaminação dos aparelhos endoscópicos com micro-organismos potencialmente patogênicos. Faz-se necessário a reavaliação de protocolos institucionais, no sentido de que seja cumprida a orientação da Anvisa por meio da RDC nº 55 de 14 de novembro de 2012 de que os detergentes enzimáticos não devem ser reutilizados sob perda da eficiência do produto. As características físico químicas dos detergentes enzimáticos devem ser respeitadas pelos serviços de saúde conforme parâmetros estabelecidos pelos fabricantes.(AU)

In Brazil, it is recommended that during the cleaning of Health Products the detergent used has enzymatic action. Although Collegiate Board Resolution No. 55 of November 14, 2012 of the National Agency of Sanitary Surveillance advises against the reuse of this cleaning solution, it is known that in clinical practice they are reused several times for immersion of health products, such a gastrointestinal endoscope, which may compromise the effectiveness of the enzymatic detergent action and thus the safety in the processing. This research aimed to evaluate the microbial load present in the enzymatic detergent solution during its reuse in the manual cleaning of endoscopic gastrointestinal devices. This was a cross-sectional study performed at a gastrointestinal endoscopy service at a university hospital in Belo Horizonte and at the Oral Microbiology and Anaerobic Laboratory of ICB/UFMG. The sample consisted of 57 endoscopes and 76 aliquots of enzymatic detergent solution collected from several replicates of 19 different solutions. The collected material was vortexed, added to Modified Letheem Broth and subjected to Millipore® 0.45 µm membrane filtration. The membrane was deposited in Tryptic Soy Ágar for microbial growth. The identification of the microorganisms was performed manually considering morphotintorial aspects and biochemical/physiological reactions. The variables were described using frequencies, percentages and measures of central tendency. The project was approved by the Ethics and Research Committee of the Federal University of Minas Gerais (CAAE - 67493417.1.0000.5149). The mean values of the microbial loads in the enzymatic detergent solution varied from 19.9 UFC/mL after first use, 51.1 UFC/mL after third use and 67.1 UFC/mL after the fifth reuse. In the air/water and biopsy channels there was an increase of Gram negative microorganisms along the reuse of the detergent. Enterobacter spp., Escherichia coli, Klebsiella spp., Pseudomonas spp., Staphylococcus aureus, Coagulase-negative Staphyloccocus were recovered. Pseudomonas spp. was the most identified microorganism in all aliquots collected. It was verified the importance of brushing the biopsy channel for correct removal of microorganisms. It was concluded that the reuse of enzyme detergent solutions contributed to the contamination of the endoscopes with potentially pathogenic microorganisms. It is necessary to re-evaluate institutional protocols, in order to comply with Anvisa's guidance through RDC nº. 55 of November 14, 2012 that enzymatic detergents should not be reused under loss of product efficiency. The physical characteristics of the enzymatic detergents must be observed by the health services according to the parameters established by the manufacturers.(AU)

Preparación del paciente y ambiente quirúrgico / Patient preparation and surgical environment

El presente artículo, analiza los diferentes aspectos relacionadoscon las medidas de prevención, aplicables a la preparación delpaciente y al ambiente quirúrgico, con la finalidad de disminuir laincidencia de infecciones operatorias. Se describen todos los facto-res ambientales y funcionales, que nos ayudarán a blindar las áreasquirúrgicas y las centrales de esterilización, para ofrecer una atención quirúrgica de calidad, siguiendo las normas y procedimientosrecomendados por organismos internacionales como la OMS(AU)

This article analyses the different aspects related to preventionmeasures, applicable to patient preparedness and surgical environ-ment, in order to reduce the incidence of operating infections. Allenvironmental and functional factors are described, which will helpus to shield surgical areas and sterilization plants, to offer qualitysurgical care, following standards and procedures recommendedby international organizations such as WHO(AU)

Encuesta sobre prácticas de prevención de infecciones asociadas a la broncoscopía en la República Argentina 2014 / Survey about Practices to Prevent Bronchoscopy-Associated Infections in the Republic of Argentina in 2014

Introducción y objetivo: Encuestas nacionales sobre la práctica broncoscópica se han repetido desde hace tres décadas en el mundo. En Argentina la broncoscopía tiene una larga historia, sin embargo, hay poca información disponible sobre esta práctica. El objetivo del estudio es obtener información sobre las características específicas de las prácticas de prevención de infecciones en los procedimientos broncoscópicos. Métodos: En 2014, distribuimos una encuesta para broncoscopistas y asistentes en la reunión anual de neumólogos. Resultados: Se completaron un total de 41 cuestionarios. No recibió capacitación específica en prevención de infecciones el 68%. Es neumonólogo el 85%. Infecciones, pseudoinfeciones o pseudoepidemias asociadas a broncoscopía fueron registradas por el 7%. No refiere haber sufrido un accidente laboral relacionado con la broncoscopía el 87%. Conoce la conducta a adoptar ante un accidente el 80%. Utiliza detergente enzimático para el proceso de limpieza 97%. Reutiliza este detergente 40%. Ortofitalaldehído, glutaraldehído o ambos es empleado como agente de desinfección de alto nivel (DAN) por el 95%. Realiza DAN sobre el broncoscopio siempre el 75%, lo hace a veces 9% y no lo hace el 14%. Realiza DAN o esterilización sobre material reutilizable el 87%. Los accesorios reutilizables (pinzas o cepillos) son esterilizados, reprocesados con DAN o ambas cosas por el 77%; y sometidos sólo a limpieza de nivel medio por el 12%. Emplea “Single Use Device” 78%, de ellos reprocesa este material 84%. Posee procesador automático el 5%. Conclusiones: Se identificaron características específicas locales de prácticas de prevención de infecciones en los procedimientos broncoscópicos.

Background and objective: Nationwide surveys about bronchoscopic practice have been carried out for three decades over the world. In Argentina, bronchoscopy has a long history; however, little information is available about this practice. The aim of this study is to obtain information regarding specific characteristics of practices to prevent in the bronchoscopy-associated infections. Methods: In 2014, we carried out a survey addressed to bronchoscopists and bronchoscopy assistants at the annual meeting of lung specialists. Results: 41 persons were surveyed. 68% did not receive any specific training in infection prevention practices. 85% were pulmonologists. 7% recorded infections, pseudoepidemics or pseudoinfections. 80% knew how to manage bronchoscopy-related accidents. 97% used enzymatic detergents in the cleaning process. 40% knew when to reuse the detergent. 95% used orthophthaldehyde, glutaraldehyde, or both of them as a high level disinfection agent (HLD). 75% used always HLD to clean the bronchoscope while 9% did it sometimes, and 14% never did it. 87% used HLD or sterilization for reusable materials. 77% sterilized reusable accessories (biopsy forceps or brushes), 77% reprocessed them with HLD, and 12% exposed them to mid level cleaning. 78% used a single device. 84% reprocessed the materials. 5% had an automatic processor. Conclusions: Local specific characteristics on the practice to prevent infections in the bronchoscopic procedures were identified.

Reprocessamento de endoscópios em Hospitais de Salvador - BA / Reprocessing of endoscopes in Hospitals in Salvador - BA

Contexto: os equipamentos endoscópicos são essenciais para o diagnóstico e tratamento de várias doenças e contribuem de forma decisiva para a prevenção e tratamento de diversas patologias. Entretanto, a utilização desses dispositivos trouxe, para além dos benefícios, risco de transmissão de infecção do que qualquer outro produto para saúde. Objetivo: este estudo objetivou analisar o reprocessamento de endoscópios em Serviços de Endoscopia na cidade de Salvador- BA. Método: trata-se de um estudo ecológico, do tipo de agregados institucionais, em que se estudou três importantes serviços de endoscopia em funcionamento dentro de hospitais da cidade de Salvador. As variáveis estudadas foram a estrutura organofuncional desses serviços e as condições técnicas do reprocessamento. Os dados foram obtidos por meio da observação direta in loco e da entrevista semiestruturada com profissionais responsáveis. Resultados: os resultados apontaram que, à luz das variáveis estudadas, apenas um serviço possuiu condições técnicas de reprocessamento de endoscópios adequadas, e os outros dois necessitam de adequações. Conclusão: esses resultados ratificam a problemática que envolve o reprocessamento dos equipamentos endoscópicos e apontam lacunas nas condições organofuncionais dos serviços estudados, de forma a potencializar os riscos para os pacientes, profissionais de saúde e desafios para os órgãos fiscalizadores.

Context: endoscopic devices are essential for diagnosis and treatment of several diseases, and contribute decisively for the prevention and treatment of various pathological conditions. Along with the many benefits they provide, endoscopes also represent higher risk of infectious contamination than any other medical equipment. Objectives: this study offers an analysis of reprocessing practices in endoscopy services in the city of Salvador, BA. Method: it is an ecological study, based on institutional aggregates, covering endoscopic services currently available in three large hospitals in Salvador. The variables considered were the organization of the service in its functional structure and the technical conditions for reprocessing. Results: the results show that only one of the observed services presents adequate technical conditions for reprocessing of endoscopes, while the remaining two services need adjustment. Conclusion: as for the functional organization of the services, the study identifies flaws that enhance risks to patients and health professionals and, therefore, require closer scrutiny and control.

Analysis of microbial load on surgical instruments after clinical use and following manual and automated cleaning.

BACKGROUND: We aimed to monitor the microbial load and identify the microorganisms recovered from surgical instruments after clinical use and following manual and automated cleaning. METHODS: This experimental study was carried out in the Laboratory of Oral Microbiology and Anaerobes at the Federal University of Minas Gerais in Brazil. Microbial samples were taken from 125 surgical instruments used in 25 types of gastrointestinal surgeries. RESULTS: The average microbial load was 93.1 CFU/100 mL after clinical use and 41 CFU/100 mL and 8.24 CFU/100 mL on instruments following 2 sequential steps of manual cleaning, respectively, and 75 CFU/100 mL and 16.1 CFU/100 mL on instruments after automated cleaning. Surgical wound classification significantly affected the microbial load recovered on instruments. Coagulase-negative Staphylococcus, Escherichia coli, Pseudomonas spp, Stenotrophomonas maltophilia, and Acinetobacter baumannii complex were recovered. CONCLUSIONS: The average microbial load observed after the cleaning steps decreased, and the decrease in microbial load was more pronounced using the manual method compared with that observed using the automated method.

TOPOGRAPHICAL AND STRUCTURAL EVALUATION OF DIATHERMY PENCILS EMPLOYED ON AESTHETIC SURGERY SUBJECTED TO FOUR REPROCESSING CYCLES USING THE EIA/CES "QUALY" APPROACH / EVALUACIÓN TOPOGRÁFICA Y ESTRUCTURAL DE LÁPICES DE DIATERMIA EMPLEADAS EN CIRUGÍA ESTÉTICA, SOMETIDOS A CUATRO CICLOS DE REPROCESADO UTILIZANDO EL ENFOQUE DE EIA/CES "QUALY" / AVALIAÇÃO TOPOGRÁFICA E ESTRUTURAL DE LÁPIS DE DIATERMIA USADOS EM CIRURGIA COSMÉTICA SOFRIDO QUATRO CICLOS DE REPROCESSAMENTO USANDO A ABORDAGEM DE EIA/CES "QUALY"

Diathermy pencils are one of the most employed medical devices around the world, this condition increases its probability to be reprocessing in patients; diathermy pencil has different parts (cord, tip, handgrip, current cables), which are composed of different kind of materials. In order to identify the medical device behavior is necessary to characterize all of those materials in the instrument. An exploration to determinate topographic surface defects and structural movements in each material was performed, with the intention of evaluated the reuse cycles effects on the medical device. The experiment was performing using the EIA/CES "QUALY" approach [1]. The study concludes that four reprocessing cycles induce some changes that are not statistically representative. Surface defects were detected in the cord; also an aggressive superficial waste after four reprocessing cycles in the tip was observed. We do not observe structural changes in the polymeric chain of the cord.

Los lápices diatermia son uno de los dispositivos médicos más empleados en todo el mundo, condición que aumenta su probabilidad de ser reprocesados con pacientes. El lápiz diatermia tiene diferentes partes (cable, punta, empuñadura, cables de corriente), que están compuestas de diferentes tipos de materiales. Con el fin de identificar el comportamiento de dispositivos médicos es necesario caracterizar todos esos materiales en el instrumento. Se efectuó una exploración de los defectos en la superficie topográfica y determinados movimientos estructurales en cada material, con el propósito de evaluar los efectos de los ciclos de reutilización sobre el dispositivo médico. El experimento se realizó mediante el enfoque "QUALY" EIA/CES [1]. El estudio concluye que cuatro ciclos de reprocesado implican algunos cambios que no son estadísticamente representativos. Se detectaron defectos en la superficie del cable; igualmente, se observó un residuo superficial agresivo después de cuatro ciclos de reprocesamiento en la punta. No se observaron cambios estructurales en la cadena polimérica de la cuerda.

Os lápis de diatermia são um dos dispositivos mais utilizados em todo o mundo médico, uma condição que aumenta a sua chance de ser reprocessados com os pacientes. O lápis de diatermia tem diferentes partes (cabo, ponta, aderência, linhas de energia), que são compostas de materiais diferentes. A fim de identificar o comportamento de dispositivos médicos é necessário caracterizar todos tais materiais no instrumento. Uma varredura de defeitos foi realizado na superfície topográfica e certos movimentos estruturais em cada material, com o objetivo de avaliar os efeitos dos ciclos de reutilização no dispositivo médico. O experimento foi realizado utilizando o EIA/CES [1] abordagem "QUALY". O estudo conclui que quatro ciclos de reprocessamento envolvem algumas mudanças que não são estatisticamente representativa. Os defeitos foram detectados na superfície do cabo; do mesmo modo, um resíduo de superfície agressivo foi observada após quatro ciclos na ponta reprocessamento. Não foram observadas alterações estruturais na cadeia do polímero da corda.

Effectiveness of ozonated water in the reprocessing of blood dialyzers

INTRODUCTION: Ozone is a potent antibacterial agent. Because ozone oxidizes organic material, it directly attacks microorganisms resulting in safe, fast and economical sterilization at low temperatures. This study evaluated the efficacy of ozonated water in the reprocessing of dialyzers obtained from a hemodialysis service in São José do Rio Preto. METHODS: A total of 23 blood dialyzers were collected at the conclusion of the morning hemodialysis shift. The equipment was collected after the maximum number of reuses, with the last disinfection performed with purified water (obtained by reverse osmosis and subsequent reverse ultrafiltration). The number and species of microorganisms in the dialyzers were evaluated before and after treatment with ozonated water. The ozonation of sterile deionized water was achieved by direct contact between the water and the ozone generating equipment. RESULTS:The mean number of microorganisms before sterilization was 1,47.10(9) colony forming units per ml (CFU/ml). After treatment with ozonated water, the number of microorganisms was 4,80.10¹ CFU/ml. CONCLUSION: Ozonated water is an effective decontaminant for most blood dialyzers.

Dessensibilização e reprocessamento por movimentos oculares (EMDR) para transtorno de estresse pós- traumático: uma revisão sistemática / Eye movement desensitization and reprocessing (EMDR) for posttraumatic stress disorder: a systematic review

A Dessensibilização e Reprocessamento Através de Movimentos Oculares (Eye Movement Desensitization and Reprocessing - EMDR) é um meio de tratamento para o Transtorno de Estresse Pós-Traumático (TEPT). Esta técnica se baseia em uma ativação das memórias traumáticas com a ajuda dos estímulos bilaterais proporcionando um processamento adequado dessas memórias. Apesar de existirem estudos de meta-análise sobre a técnica, algumas lacunas ainda são apontadas na literatura. Este estudo consiste em uma revisão sistemática que objetiva atender a tais lacunas, além de prover um breve resumo sobre o protocolo de aplicação do EMDR, tendo em vista a escassez de material publicado sobre o assunto no Brasil. O presente estudo conclui que pesquisas clínicas controladas e de follow up (seguimento) reforçam a evidência de eficácia do EMDR em comparação com outras técnicas e de que os seus efeitos se mantêm por pelo menos tanto tempo quanto em outras formas de terapia.

Eye Movement Desensitization and Reprocessing (EMDR) is a treatment technique for Posttraumatic Stress Disorder (PTSD). This technique is based on an activation of traumatic memories with the help of bilateral stimuli providing a proper processing of these memories. Although meta-analysis of the technique are available, some gaps are still reported in literature. This study consists of a systematic review that aims at addressing these gaps and, in addition, providing a brief summary as to the application of the EMDR protocol since there is little published material on the subject. This study concluded that randomized clinical trials and follow up studies support the evidence that EMDR is efficient compared with other techniques and that the effects of EMDR remain for at least as long as other forms of therapy.

Dessensibilização e reprocessamento por movimentos oculares (EMDR) para transtorno de estresse pós- traumático: uma revisão sistemática / Eye movement desensitization and reprocessing (EMDR) for posttraumatic stress disorder: a systematic review

A Dessensibilização e Reprocessamento Através de Movimentos Oculares (Eye Movement Desensitization and Reprocessing - EMDR) é um meio de tratamento para o Transtorno de Estresse Pós-Traumático (TEPT). Esta técnica se baseia em uma ativação das memórias traumáticas com a ajuda dos estímulos bilaterais proporcionando um processamento adequado dessas memórias. Apesar de existirem estudos de meta-análise sobre a técnica, algumas lacunas ainda são apontadas na literatura. Este estudo consiste em uma revisão sistemática que objetiva atender a tais lacunas, além de prover um breve resumo sobre o protocolo de aplicação do EMDR, tendo em vista a escassez de material publicado sobre o assunto no Brasil. O presente estudo conclui que pesquisas clínicas controladas e de follow up (seguimento) reforçam a evidência de eficácia do EMDR em comparação com outras técnicas e de que os seus efeitos se mantêm por pelo menos tanto tempo quanto em outras formas de terapia(AU)

Eye Movement Desensitization and Reprocessing (EMDR) is a treatment technique for Posttraumatic Stress Disorder (PTSD). This technique is based on an activation of traumatic memories with the help of bilateral stimuli providing a proper processing of these memories. Although meta-analysis of the technique are available, some gaps are still reported in literature. This study consists of a systematic review that aims at addressing these gaps and, in addition, providing a brief summary as to the application of the EMDR protocol since there is little published material on the subject. This study concluded that randomized clinical trials and follow up studies support the evidence that EMDR is efficient compared with other techniques and that the effects of EMDR remain for at least as long as other forms of therapy(AU)

Reprocessamento de pinças de alta resolução para corte e coagulação / High-resolution tweezers for cutting and coagulation reprocessing

INTRODUÇÃO: Diversos estudos demonstraram as vantagens clínicas da utilização dos instrumentos de alta resolução em cirurgia, com a redução do tempo operatório, fácil manuseio e efetividade nas incisões, assim como menor geração de fumaça e danos térmicos teciduais. OBJETIVO: Demonstrar a viabilidade técnica de reutilização das pinças de alta resolução para corte e coagulação teoricamente recomendadas para uso único. MÉTODO: Foi avaliada a eficácia da limpeza, garantia do processo de esterilização e qualidade funcional do material. O processo foi aplicado em quatro pinças da marca Ligasure- Valleylab. Cada uma foi identificada com fitas autoclaváveis de cores diferentes para rastreamento. Duas foram submetidas diretamente à limpeza após a primeira utilização e nas outras duas foi coletado, antes desta limpeza, material para a primeira cultura. Todas as pinças passaram por processo de limpeza antes da esterilização. Em seguida foram esterilizadas em peróxido de hidrogênio. Após o processo de esterilização foi colhida, de cada pinça, cultura em meio de solução fisiológica. Após esta coleta todas as pinças foram testadas por um cirurgião quanto à sua atuação em uma amostra de carne bovina. Randomicamente, a cada teste o pesquisador contaminava uma pinça com cepas de Pseudomonas aeroginosa, Staphylococcus aureus e Candida albicans. Este processo foi repetido por quatro vezes. O material foi encaminhado ao laboratório e semeado em meio de cultura passível de identificação microbiológica. Para controle de qualidade todos os testes biológicos, químicos e certificados de qualidade dos produtos utilizados no processo foram anexados. RESULTADOS: Os resultados de todas as culturas foram negativos e a funcionabilidade preservada nas quatro reutilizações. CONCLUSÃO: Quanto à funcionabilidade, as pinças podem ser utilizadas por no mínimo até quatro vezes, que foi o número de vezes testado neste experimento. Portanto, ela pode ser utilizada por cinco vezes, sendo a primeira vinda de fábrica e mais quatro após reprocessamento.

INTRODUCTION: Several studies have demonstrated the clinical benefits of the use of high resolution instruments in surgery, with reduction in the operative time, easy handling and effectiveness in the incisions, as well as lower smoke generation and thermal tissue damage. AIM: To demonstrate the technical feasibility of reusing devices of high resolution for cutting and coagulation, theoretically recommended for single use. METHOD: Was evaluated the efficacy of cleaning, sterilization process and functional quality of the material. The process was applied in four tweezers brand Ligasure - Valleylab. Each was identified with ribbons of different colors autoclavable for tracking. Two were submitted directly to the cleaning after the first use and from the other two were collected samples of this cleaning for the first culture. All tweezers passed through the cleaning process prior to sterilization. Then were sterilized in hydrogen peroxide. After the sterilization process, was taken material from the devices and put it on saline solution for culture. After, the tweezers were tested by a surgeon to analyze its performance in a sample of beef. Randomly at each test the researcher contaminated tweezers with strains of Pseudomonas aeruginosa, Staphylococcus aureus and Candida albicans. This process was repeated four times. The material was sent to the laboratory and seeded in culture medium capable of microbiological identification. For quality control tests all biological, chemical and quality certification of products used in the process were attached. RESULTS: The results of all cultures were negative, and functionality was preserved in the four reuses. CONCLUSION: As to the functionality, the tweezers may be used at least four times, the number of times tested in this experiment. Therefore, it can be used for five times, the first coming from the factory and four more after reprocessing.

Reprocessamento de produtos médicos: da política regulatória à prática operacional / The reprocessing of medical products: from regulatory polices to operational practices

É crescente o arsenal tecnológico utilizado nas intervenções do cuidado à saúde, ampliado continuamente com a introdução de novos produtos e artigos. Os problemas relacionados à reutilização de produtos médicos, tanto os considerados como reusáveis quanto os de uso único, abrangem aspectos de natureza técnico-operacional, econômica, ambiental, jurídica, política e ética. Este estudo tem o objetivo de contextualizar os sistemas de regulação dos produtos médicos, e analisar as implicações operacionais para a prática hospitalar brasileira. Trata-se de um artigo de revisão bibliográfica, realizada sem restrição de tempo e idioma, utilizando as bases de dados da Web of Science, Bireme, Scielo e Lilacs, com descritores específicos. A contextualização dos esquemas regulatórios de produtos médicos no mundo e no Brasil e as regras básicas das normatizações existentes sobre o reprocessamento desses produtos são as fontes de subsídio que este estudo utiliza para analisar as implicações operacionais sobre essas práticas em hospitais brasileiros.

The number of technological resources used in health care interventions is growing and continually expanding with the introduction of new products and articles. Problems associated with the reutilization of medical products, both reusable and of single use, affect policies and related technical-operational, economic, political, ethical, legal, and environmental matters. This study aims to contextualize the regulatory systems of medical products, and analyze the subsequent operational implications for Brazilian hospital practices. The article consists of a bibliographic review, carried out without time and language restriction, utilizing the Web of Science, Bireme, Scielo and Lilacs databases, with the support of specific descriptors. This study uses the contextualization of regulatory plans for medical products across the world and in Brazil and the existing condition of standardization of the reprocessing of these products as the assessment sources with which to analyze the operational implications for these practices in Brazilian hospitals.

Evaluation of the use and re-use of cotton fabrics as medical and hospital wraps

The objective of this study was to verify the efficacy of cotton fabric, made of serge bonding 2 x 1, as microbial barrier, when new and after multiple laundering and steam sterilization procedures. The power of the microbial barrier was correlated with physical characteristics of the fabric, using standard test methods for evaluation of weight, traction, stretching tearing resistance and microbiological characteristics. The microbiological results evidenced that the microbial barrier was effective when the wrapping material was new or went through a maximum of new 65 reprocessing procedures. As for the alterations in the physical characteristics of the reprocessed material, the decrease in weight seemed to be the event responsible for microbial barrier breaking. The timing of detected alterations in bursting, traction and stretching in the wrap and the reprocessed fabrics did not coincide with the moment of bacterial barrier breaking. The present investigation corroborates that the use double cotton fabric, for wrapping medical and hospital items for steam sterilization, is safe. Re-use number must be controlled, not exceeding 65 times.

O objetivo deste estudo foi verificar a efetividade do tecido de ligamento sarja 2 x 1, usado na confecção de campos duplos de algodão para a embalagem de artigos médico-hospitalares como barreira microbiana eficaz, enquanto novos e após múltiplas lavagens e autoclavações e correlacionar a quebra do poder de barreira microbiana com as alterações das características físicas do tecido. Foram utilizados métodos de testes padronizados tanto para a avaliação das características físicas para a determinação da gramatura, resistência a ruptura, resistência a tração e alongamento quanto para as microbiológicas. Os resultados microbiológicos demonstraram a efetividade da barreira microbiana da embalagem em estudo enquanto novos e, na determinação do número máximo de reprocessamentos, indicaram o número limite de 65. Quanto às alterações das características físicas do tecido reprocessado, a diminuição da gramatura foi o acontecimento que sustentou a quebra da barreira microbiana. O momento da alteração constatada nas medidas físicas de estouro, tração e alongamento no urdume e na trama dos tecidos reprocessados não coincidiu com o da quebra de barreira microbiana. A presente investigação sustenta a segurança do uso do tecido de algodão como embalagem de artigos médico hospitalares na esterilização por calor úmido. O número de reusos deverá ser controlado, não excedendo o de 65 vezes.

Reprocessamento e reutilização de cateteres de hemodinâmica: a busca da qualidade nesta prática / Haemodynamic catheters reprocessing: search of quality in that practice

Este estudo teve como objetivos identificar e analisar os aspectos que implicam na decisão em reprocessar e reutilizar cateteres de hemodinâmica originalmente para um único uso as condições gerais do seu reprocessamento. Os dados foram coletados em 13 instituições hospitalares do município de São Paulo que aceitaram participar da pesquisa e que realizavam procedimentos hemodinâmicos, por meio de entrevista com enfermeiros do setor de hemodinâmica e da Comissão de Controle de Infecção Hospitalar (CCIH). O instrumento utilizado para a coleta de dados foi de múltipla escolha abrangendo as diversas etapas do reprocessamento. Constatamos que a causa principal para decidir pela reutilização dos cateteres é o aspecto econômico, mas nem todos os enfermeiros concordavam com a reutilização. A responsabilidade na decisão pelo reprocessamento e reutilização desses cateteres não era conhecida ou estava diluída entre um único profissional (médico ou enfermeiro), exceto a CCIH em duas instituições. As etapas de execução dessa prática não ocorriam em um só setor, distribuindo-se principalmente entre o serviço de hemodinâmica e serviço terceirizado de esterilização. O enfermeiro da Central de Materiais e Esterilização não estava envolvido e esse setor participava de algumas das etapas do processo na minoria das instituições. Apesar de constatarmos que as mesmas utilizavam mecanismos de controle, a principal problemática foi identificada na diversidade das ações, com bases empíricas na maioria das vezes não correspondendo às recomendações encontradas em literatura científica. Tendo em vista que a prática de reprocessamento reutilização de artigos originalmente de uso único é uma realidade nacional e internacional, concluímos pela necessidade de mais pesquisas que forneçam subsídios cientificamente comprovados para sua qualificação, assim como um maior comprometimento das instituições, associações profissionais e órgãos governamentais

The main objective of this study was to identify and analyze which aspects would imply in taking the decision of reprocessing and reusing haemodynamic catheters originally designed for single use and general reprocessing conditions. The data were collected in 13 hospital entities in São Paulo district, which accepted to take part in the research, and used to realize haemodynamic procedures through interviews with Haemodynamic Section Nurses and Hospital Infection Control Committee (HICC). The instrument used for collecting data was multiple choices comprising the different steps of the reprocessing. We stated that the main reason for deciding for reusing the catheters is the savings aspect, although not all the nurses agreed with the reusing. The responsibility in deciding for reprocessing and reusng those catheters was unknown or had been dissolved in a single professional (doctor or a nurse), except the HICC in two entities. The steps in the accomplishment of that practice did not happen in a single section, being mainly shared between the haemodynamic service and thirth-party sterilization service. The Central Supply nurse was not involved, and that section used to take part in some of the steps of the process only in few entities. Although we stated that they used control mechanisms, the main difficulty was identified in the diversity of the actions, most of the times with empiric basis, and not corresponding to the recommendations retrieved in scientific literature. Having in mind that the reprocessing and reuse of devices originally designed for single use is a national and international reality, we came to the conclusion that more researches are necessary to provide scientifically certified endowments for its qualification, as well as a major commitment of the entities, professional associations and governamental organs