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Objectives: Identify, through a systematic review, the main domains and methods to support health technology assessment of Medical Devices (MD) from the perspective of technological incorporation into healthcare systems. Methods: Performed structured searches in MEDLINE, Embase, BVS, Cochrane Library, and Web of Science for full studies published between 2017 and May 2023. Selection, extraction, and quality assessment were performed by two blinded reviewers, and discrepancies were resolved by a third reviewer. Results: A total of 5,790 studies were retrieved, of which 41 were included. We grouped the identified criteria into eight domains for the evaluations. Conclusion: Overall, studies discuss the need to establish specific methods for conducting HTA in MD. Due to the wide diversity of MD types, a single methodological guideline may not encompass all the specificities and intrinsic characteristics of the plurality of MD. Studies suggest using clustering criteria through technological characterization as a strategy to make the process as standardized as possible.

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Background: Metrology plays a crucial role in small healthcare service businesses to ensure the quality of products and services. While legal metrology in healthcare exists in some regions, it lacks harmonization. In other countries, there is limited presence of metrology in medical and biomedical engineering. We aimed to evaluate the implementation of metrological assurance systems for medical devices in Latin America. Methods: A systematic review was conducted following PRISMA 2020 guidelines and registered with PROSPERO (CRD42022359284). Searches were performed across 13 databases from October 30th to November 3rd, 2022. The search equation was "(((quality assurance) AND (metrology)) AND (medical devices))." A total of 7,789 documents were identified, of which only 16 met the inclusion criteria. Results: The majority of studies (75%) were conducted in Colombia, with a significant portion being undergraduate theses. The primary normative references used in the analyzed studies were ISO 10012 and ISO 17025, with the majority (68.75%) relying on national legislation for their approach. One study in Colombia referenced eight standards, and one in Brazil analyzed user involvement in medical device management. Among the included studies, 56.25% were conducted in healthcare institutions, mainly clinics. Most studies provided implementation guidelines, with ISO 10012 being prominent, alongside ISO 17025, which implicitly addresses ISO 9001 elements. Global bias was low across all studies. Conclusion: Our results underscore the importance of metrological assurance in managing medical devices in Latin America. The utilization of international standards and national legislation illustrates the diverse approaches adopted by different institutions. Future research should focus on optimizing metrological practices to enhance quality and safety in healthcare.

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Nosocomial infections or healthcare-associated infections, normally develops after the healthcare treatment in the hospital. Most of them are caused by infected medical devices. Plastics are the most common materials for manufacturing these devices because of their good processability, sterilization efficacy, ease of handling and harmlessness, however, it usually do not display antimicrobial properties. Here, in order to infer antimicrobial activity to poly(lactic acid), it was modified by maleation, followed by l-lysine grafting to its structure. The chemical modifications were confirmed by FTIR and 1H NMR analysis, indicating the success of the reactions. The antimicrobial activity was tested using Escherichia coli and Staphylococcus aureus and the results showed that the sample was capable of inhibiting about 99 % of the S. aureus growth by contact. The samples cytotoxicity was also tested using the L929 mouse cells and the results indicated no cytotoxic effect. These results indicated the sample antimicrobial potential, without affect the normal eukaryotic cells. In addition, the processability of the modified PLA (PLA-g-Lys) was improved without compromising its mechanical properties, as shown by thermal analysis and tensile tests. Thus, this novel PLA derivative can be seen as a promising material for future applications in the manufacturing of biomedical devices.

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Osteomyelitis often involves Staphylococcus spp. as the isolated genus in domestic animal cases. Implant-related infections, frequently associated with biofilm-forming microorganisms like staphylococci species, necessitate careful material selection. This study assessed biofilm formation by Staphylococcus pseudintermedius on titanium nuts used in veterinary orthopaedic surgery. Biofilm quantification employed safranin staining and spectrophotometric measurement, while bacterial counts were determined in colony-forming units (CFU). Scanning Electron Microscopy (SEM) evaluated the biofilm morphology on the surface of titanium nuts. All samples had CFU counts. Absorbance values that evidence biofilm formation were observed in seven of the eight samples tested. SEM images revealed robust bacterial colonization, and significant extracellular polymeric substance production, and the negative control displayed surface irregularities on the nut. Whole genome sequencing revealed accessory Gene Regulator (agr) type III in six samples, agr IV and agr II in two each. Genes encoding hlb, luk-S, luk-F, siet, se_int, and the icaADCB operon were identified in all sequenced samples. Other exfoliative toxins were absent. Biofilm formation by S. pseudintermedius was detected in all samples, indicating the susceptibility of orthopaedic titanium alloys to adhesion and biofilm formation by veterinary species. The biofilm formation capacity raises concerns about potential post-surgical complications and associated costs.

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Objective: to analyze the use of quality assessment indicators and their implementation to improve quality in the processing of health products. Method: a mixed-methods study with a multiple case approach using Structure, Process and Results indicators and elaboration of a plan using Appreciative Inquiry, carried out in four central sterile supply departments from hospital units. Results: the indicators for the Cleaning stage presented 47.8% compliance for Structure and 59.0% for Process: in addition 71.8% of the products were clean. In the Preparation operational stage, 50.0% of the Results indicators were in compliance for Structure and 66.7% for Process. In the Sterilization, Storage and Distribution stage, 43.5% compliance was obtained for Structure, 55.7% for Process and 78.6% for Packaging conservation. Appreciative planning proposed improvements to the physical structure, review of processes and protocols, promotion and appreciation of the work done and strengthening of teaching about processing and service management, highlighting the protagonism of the group and of the leaders. Conclusion: using indicators was positive in materializing reality; however, it was verified that the improvements proposed are related to people. The affirmative and constructive view of Appreciative Inquiry presented itself as a path to changes and quality improvements.

Objetivo: analizar el uso y la implementación de indicadores de evaluación de la calidad para mejorar la calidad del procesamiento de productos para la salud. Método: estudio mixto, con enfoque de casos múltiples que usa indicadores de estructura, proceso y resultado y la elaboración de una planificación mediante la investigación apreciativa, realizado en cuatro centros de material y esterilización de unidades hospitalarias. Resultados: los indicadores de la etapa de limpieza mostraron un 47,8% de conformidad en estructura, un 59,0% en proceso y el 71,8% de los productos estaban limpios. En la etapa operativa de la preparación, se registró conformidad en el 50,0% de los indicadores de resultados de estructura y en el 66,7% de proceso. En la etapa de esterilización, almacenamiento y distribución se obtuvo un 43,5% de conformidad en estructura, un 55,7% en proceso y un 78,6% en conservación de los envases. La planificación apreciativa propuso mejoras para la estructura física, revisión de procesos y protocolos, promoción y valoración del trabajo, fortalecimiento de la enseñanza sobre procesamiento y gestión de servicios, y destacó el protagonismo del grupo y del liderazgo. Conclusión: el uso de indicadores fue positivo para materializar la realidad, sin embargo, se observó que las mejoras propuestas tienen que ver con las personas. La visión afirmativa y constructiva de la investigación apreciativa demostró ser útil para cambiar y mejorar la calidad.

Objetivo: analisar o uso de indicadores de avaliação da qualidade e suas implementações para melhoria da qualidade do processamento de produtos para saúde. Método: estudo misto, com abordagem de casos múltiplos utilizando indicadores de estrutura, processo e resultado e a construção de um planejamento utilizando a investigação apreciativa, realizado em quatro centros de material e esterilização de unidades hospitalares. Resultados: os indicadores para a etapa da limpeza apresentaram 47,8% de conformidade para estrutura, 59,0% para processo e 71,8% de produtos estavam limpos. Na etapa operacional do preparo, 50,0% dos indicadores de resultados estiveram em conformidade para estrutura e 66,7%, para processo. Na etapa de esterilização, armazenamento e distribuição, obtiveram-se 43,5% de conformidade para estrutura, 55,7% para processo e 78,6% para conservação das embalagens. O planejamento apreciativo propôs melhorias para a estrutura física, revisão de processos e protocolos, promoção e valorização do trabalho, fortalecimento do ensino sobre processamento e a gerência do serviço, destacando o protagonismo do grupo e da liderança. Conclusão: o uso dos indicadores foi positivo na materialização da realidade, porém verificou-se que as melhorias propostas se relacionam às pessoas. A visão afirmativa e construtiva da investigação apreciativa apresentou-se como caminho para mudanças e melhorias da qualidade.

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Three-dimensional printing technologies can be implemented for the fabrication of personalized vaginal rings (VRs) as an alternative approach to traditional manufacturing. Although several studies have demonstrated the potential of additive manufacturing, there is a lack of knowledge concerning the opinions of patients and clinicians. This study aimed to investigate the perception of women and gynecologists regarding VRs with personalized shapes. The devices were printed with different designs (traditional, "Y", "M", and flat circle) by Fused Deposition Modeling for a cross-sectional survey with 155 participants. Their anticipated opinion was assessed through a questionnaire after a visual/tactile analysis of the VRs. The findings revealed that most women would feel comfortable using some of the 3D-printed VR designs and demonstrated good acceptability for the traditional and two innovative designs. However, women presented multiple preferences when the actual geometry was assessed, which directly related to their age, previous use of the vaginal route, and perception of comfort. In turn, gynecologists favored prescribing traditional and flat circle designs. Overall, although there was a difference in the perception between women and gynecologists, they had a positive opinion of the 3D-printed VRs. Finally, the personalized VRs could lead to an increase in therapeutic adherence, by meeting women's preferences.

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Cardiac medical devices (CMDs) are required when the patient's cardiac capacity or activity is compromised. To guarantee its correct functionality, the building materials in the development of CMDs must focus on several fundamental properties such as strength, stiffness, rigidity, corrosion resistance, etc. The challenge is more significant because CMDs are generally built with at least one metallic and one polymeric part. However, not only the properties of the materials need to be taken into consideration. The biocompatibility of the materials represents one of the major causes of the success of CMDs in the short and long term. Otherwise, the material will lead to several problems of hemocompatibility (e.g., protein adsorption, platelet aggregation, thrombus formation, bacterial infection, and finally, the rejection of the CMDs). To enhance the hemocompatibility of selected materials, surface modification represents a suitable solution. The surface modification involves the attachment of chemical compounds or bioactive compounds to the surface of the material. These coatings interact with the blood and avoid hemocompatibility and infection issues. This work reviews two main topics: 1) the materials employed in developing CMDs and their key characteristics, and 2) the surface modifications reported in the literature, clinical trials, and those that have reached the market. With the aim of providing to the research community, considerations regarding the choice of materials for CMDs, together with the advantages and disadvantages of the surface modifications and the limitations of the studies performed.

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Introducción: El ductus arterioso persistente (DAP) es una cardiopatía congénita de especial interés. La oclusión intervencionista es el tratamiento de elección, no obstante, el dispositivo médico "oclusor para DAP", usado en este procedimiento, puede dar lugar a la aparición de eventos adversos de rara frecuencia como hemorragia, trombocitopenia, entre otros. Reporte de caso: Se presenta un caso de una paciente pediátrica con trombocitopenia severa posterior a la intervención. Durante su hospitalización, la paciente mantuvo niveles bajos de plaquetas hasta que logra su recuperación y sale de alta sin una nueva manifestación hematológica. El caso fue reportado como sospecha de incidente adverso asociada al oclusor para DAP. Conclusión: Al realizarse el análisis causa-raíz, se concluye que el tamaño del oclusor para DAP podría ser la principal causa de la trombocitopenia. El presente caso es una muestra que los dispositivos médicos pueden causar eventos adversos severos, por lo que, es necesaria la implementación de tecnovigilancia, principalmente a los dispositivos médicos de alto riesgo.

Introduction: Patent ductus arteriosus (PDA) is a congenital heart condition of special interest. Interventional occlusion is the treatment of choice; however, a PDA occlude, used in this procedure, is a medical device that rarely could lead to adverse events such as hemorrhage, thrombocytopenia, etc. Case report: We present a case of a pediatric patient with severe thrombocytopenia after surgery. During her hospitalization, platelet levels remained lower and, finally, she was fully recovered without any hematological manifestation. The case was reported as a suspected adverse incident related to PDA occlude. Conclusion: After performing a cause-root analysis, we concluded that the size of the PDA occlude may be the main cause of thrombocytopenia. This case demonstrates that medical devices could lead to adverse events. Thus, it is important for clinicians to implement medical device surveillance, mainly for high-risk medical devices.

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Introducción: Los fabricantes de los dispositivos médicos no siempre disponen de experiencia para realizar un proceso de gestión de riesgos que cumpla con la norma ISO 14971:2019 e incluya los requisitos metrológicos necesarios; por tanto, para un mejor uso de estos equipos, especialmente los de diagnóstico, se debe implementar y mantener un proceso de gestión de riesgos basado en las normativas establecidas. Objetivo: Proponer una guía para la gestión de los riesgos indirectos en pacientes con diagnósticos incorrectos o retrasados. Métodos: Se revisaron las normas internacionales aplicables y se analizaron expedientes de gestión del riesgo de dispositivos médicos, entre ellos reactivos para el diagnóstico in vitro. Resultados: La guía ofrece elementos orientadores para cada etapa del proceso de gestión de riesgos en los dispositivos médicos para el diagnóstico: plan de gestión del riesgo, análisis, valoración y control del riesgo, evaluación del riesgo residual global, revisión de la gestión de riesgo y retroalimentación a partir de la información de producción o posproducción. Conclusiones: Esta guía es una herramienta útil para diseñadores, fabricantes, evaluadores de dispositivos médicos para el diagnóstico, asesores en temas de gestión de riesgos y la calidad de los dispositivos y personal médico(AU)

Introduction: Manufacturers of medical devices do not always have the expertise to perform a risk management process that complies with ISO 14971:2019 and includes the necessary metrological requirements; therefore, for better use of these devices, especially diagnostic devices, a risk management process based on established regulations should be implemented and maintained. Objective: To provide guidance for the management of indirect risks in patients with incorrect or delayed diagnoses. Methods: Applicable international standards were reviewed and risk management dossiers for medical devices, including in-vitro diagnostic reagents, were analyzed. Results: The guidance provides guiding elements for each step of the risk management process for diagnostic medical devices: risk management plan, risk analysis, risk assessment, risk evaluation and control, overall residual risk assessment, risk management review, and feedback from production or post-production information. Conclusions: This guide is a useful tool for designers, manufacturers, evaluators of diagnostic medical devices, risk management and device quality assessors, and medical personnel(AU)

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Staphylococcus pseudintermedius is the primary cause of pyoderma and surgical site infection (SSI) in dogs, and biofilm formation is the main reason for persistent SSI. The presence of biofilm in medical devices can directly impact treatment. Methicillin-resistant S. pseudintermedius (MRSP) emerged rapidly in companion animals, limiting treatment options. MRSP is a public health problem since zoonotic transmission can occur. The study seeks to evaluate biofilm formation capacity via Staphylococcus pseudintermedius collected from dogs affected by topical infections, in suture materials commonly used in companion animal surgery. We tested segments of four types of sutures. Biofilm production was measured by staining with safranin and colorimetric absorbance measurement. We calculated colony-forming units (CFUs) for each type of sutures and visualized biofilm via Scanning Electron Microscopy (SEM) images. The genes associated with biofilm formation (icaA and icaD) were identified using PCR. The colorimetric tests showed that the biofilm is most abundantly formed on the cotton sutures and polyglactin 910. The ability to form biofilm on polypropylene and nylon sutures has also been demonstrated, although at varying intensities. PCR revealed the presence of the two genes (icaA and icaD) in all the isolates. We used a positive control using a reference strain and negative control without bacteria for comparisons. Suture material allowing biofilm formation makes it difficult to prevent and treat surgical site infections. Therefore, it is important to know which suture thread is more susceptible to biofilm formation by bacteria to prevent possible secondary infections at surgical sites.

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Objetivo: Pretendeu-se mapear os bancos de dados governamentais em dispositivos médicos, na perspectiva pública com o intuito de contribuir como fonte para gerar dados de mundo real (RWD) e potencial para subsidiar estudos de Avaliação de Tecnologias em Saúde (ATS). Métodos: Realizada revisão narrativa na base de dados do Embase. Os critérios para inclusão de elegibilidade foram: i) dimensão ampla de RDW nos processos de gestão de tecnologias; e ii) aplicação de RDW em processos regulatórios, cobertura e ATS. Também foram consultados os sistemas do Ministério da Saúde e da Anvisa. Resultados: A busca retornou 1.185 resultados; após leitura dos resumos, foram selecionados 29 artigos, sendo 5 incluídos. Na consulta ao catálogo do Datasus, foram localizados 262 sistemas informatizados; após análise da descrição sumária e principais objetivos, foram selecionados 12 sistemas que geram dados sobre dispositivos médicos. A falta de interoperabilidade dos sistemas é recorrente e a ausência de uma nomenclatura padronizada é um desafio a mais. Conclusão: Há crescente discussão do uso de RWD para subsidiar ATS em todo o ciclo de vida tecnológico, desde regulação até monitoramento do uso, como também para subsidiar análises de custo-efetividade e benefícios clínicos. Assim como nos demais países, o Brasil sistematizou inicialmente os dados administrativos para atender às demandas comerciais e financeiras. Os sistemas não geram dados dos resultados clínicos. São disponibilizados dados das tecnologias dispensadas e dos valores repassados e não são coletadas as informações dos benefícios do uso dessas tecnologias. Com a evolução dos métodos de ATS, a utilização de RWD tornou-se relevante.

Objective: It was intended to map government databases on medical devices, in the public perspective, in order to contribute as a source to generate real world data (RWD) and potential to subsidize Health Technology Assessment (HTA) studies. Methods: A narrative review was carried out in the Embase database. The criteria for inclusion of eligibility were: i) broad dimension of RDW in technology management processes; and ii) application of RDW in regulatory processes, coverage and HTA. The systems of the Ministry of Health and Anvisa were also consulted. Results: Results: The search returned 1,185 results, after reading the abstracts, 29 articles were selected, 5 of which were included. The catalog of Datasus database were consulted, 262 summaries with the description and the main objectives were analyzed, 12 systems were selected systems that generate medical devices. The lack of interoperability of systems is recurrent and the absence of a standardized nomenclature is an additional challenge. Conclusion: There is a growing discussion about the use of RWD to subsidize HTA throughout the technological life cycle, from regulation to monitoring of use, as well as to subsidize the examination of cost-effectiveness and clinical benefits. As in other countries, Brazil has systematized administrative data for commercial and financial data demands. The systems do not generate data on clinical outcomes. Data provided are on dispensed technologies, on transferred values and are not collected on the benefits of using these technologies. With the evolution of HTA methods, the use of RWD has become relevant.

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Nanosecond Pulsed Electric Field (nsPEF) is an electrostimulation technique first developed in 1995; nsPEF requires the delivery of a series of pulses of high electric fields in the order of nanoseconds into biological tissues or cells. They primary effects in cells is the formation of membrane nanopores and the activation of ionic channels, leading to an incremental increase in cytoplasmic Ca2+ concentration, which triggers a signaling cascade producing a variety of effects: from apoptosis up to cell differentiation and proliferation. Further, nsPEF may affect organelles, making nsPEF a unique tool to manipulate and study cells. This technique is exploited in a broad spectrum of applications, such as: sterilization in the food industry, seed germination, anti-parasitic effects, wound healing, increased immune response, activation of neurons and myocites, cell proliferation, cellular phenotype manipulation, modulation of gene expression, and as a novel cancer treatment. This review thoroughly explores both nsPEF's history and applications, with emphasis on the cellular effects from a biophysics perspective, highlighting the role of ionic channels as a mechanistic driver of the increase in cytoplasmic Ca2+ concentration.

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The efficacy of double manual cleaning (DMC) with enzymatic detergent followed by alkaline detergent on biofilm removal on hinged surgical instruments was compared to automated cleaning. Biofilm-covered haemostatic forceps were divided into four groups: positive control (soaked in sterile water); DMC; DMC plus extra brushing of the inner hinge; and automated cleaning. All DMC, DMC plus brushing the hinge, and automated cleaning significantly (P < 0.001) reduced 94.8%, 99.8%, and 100% viable bacteria and 82.3%, 93.8%, and 95.1% residual protein, respectively, compared to positive control. DMC instruments had significantly more viable bacteria (P < 0.05) and residual protein (P < 0.01) than those in instruments subjected to DMC with hinge brushing and automated cleaning. However, there was no significant difference in residual protein between DMC with hinge brushing and automated cleaning. In sterilizing service units with no access to automated cleaning equipment, it is important to brush the inner hinge during manual cleaning, and DMC plus brushing the inner hinge could be considered a viable alternative for cleaning hinged surgical instruments.

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RESUMEN En Cuba se fomenta el desarrollo de investigaciones en el campo de las ciencias médicas, con el fin de introducir sus resultados a favor del progreso económico y social. El objetivo de este trabajo fue reflexionar sobre el papel de la ciencia en la gestión de equipos médicos, su aplicación en los departamentos de electromedicina de las instituciones sanitarias, y su impacto social. Todo ello a partir de la presentación de los aspectos teóricos fundamentales de las relaciones entre ciencia, gestión de equipos médicos y función social de la electromedicina, a partir de su situación actual. La investigación científica en electromedicina, permitiría formular nuevas teorías o modificar las existentes e incrementar los conocimientos, lo que posibilitaría el enriquecimiento de las ciencias médicas. Resulta necesaria como proceso, a fin de obtener información relevante para la verificación, corrección y aplicación del conocimiento, en aras de solucionar los problemas de las tecnologías sanitarias y su impacto socioeconómico.

ABSTRACT In Cuba, the development of research in the field of the medical sciences is promoted in order to introduce its results to favor the social and economic progress. The aim of this work was to reflect on the role of science in the management of medical devices, its application in the electromedicine departments of health facilities, and its social impact, all this from the presentation of the main theoretical aspects of the relations between science, medical devices management and electromedicine social function in its current situation. Scientific research in electromedicine would allow to formulate new theories or to modify the existent ones and to increase knowledge, what would make possible the enrichment of the medical sciences. As a process, scientific research is necessary in order to obtain relevant information for the validation, correction and application of the knowledge, for the sake of solving the problems of health technologies and its socioeconomic impact.

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BACKGROUND: Mechanical ventilators are essential biomedical devices for the respiratory support of patients with SARS-CoV-2 infection. These devices can be transmitters of bacterial pathogens. Therefore, it is necessary to implement effective disinfection procedures. The aim of this work was to show the impact of the modification of a cleaning and disinfection method of mechanical ventilators of patients with SARS-CoV-2 and ventilator-associated pneumonia. METHODS: A total of 338 mechanical ventilators of patients infected with SARS-CoV-2 and ESKAPE bacteria were divided in two groups. Group A and B were subjected to cleaning and disinfection with superoxidation solution-Cl/enzymatic detergent and isopropyl alcohol, respectively. Both groups were cultured for the detection of ESKAPE bacteria. The isolates were subjected to tests for identification, resistance, adherence, and genomic typing. RESULTS: Contamination rates of 21.6% (n = 36) were identified in group A. The inspiratory limb was the circuit involved in most cases of postdisinfection contamination. Acinetobacter baumanni, Pseudomonas aeruginosa, and multi-resistant Klebsiella pneumoniae were the pathogens involved in the contamination cases. The pathogens were highly adherent and in the case of A. baumanni, clonal dispersion was detected in 14 ventilators. Disinfection with enzymatic detergents allows a 100% reduction in contamination rates. CONCLUSIONS: The implementation of cleaning and disinfection with enzymatic detergents/isopropyl alcohol of mechanical ventilators of patients with SARS-CoV-2 and ESKAPE bacteria had a positive impact on postdisinfection microbial contamination rates.

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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.

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New medical devices with anti-inflammatory properties are critical to prevent inflammatory processes and infections in medical/surgical procedures. In this work, we present a novel functionalization of silicone for medical use with a polymeric prodrug and a thermosensitive polymer, by graft polymerization (gamma rays), for the localized release of salicylic acid, an analgesic, and anti-inflammatory drug. Silicone rubber (SR) films were functionalized in two stages using graft polymerization from ionizing radiation (60Co). The first stage was grafting poly(N-vinylcaprolactam) (PNVCL), a thermo-sensitive polymer, onto SR to obtain SR-g-PNVCL. In the second stage, poly(2-methacryloyloxy-benzoic acid) (P2MBA), a polymeric prodrug, was grafted to obtain (SR-g-PNVCL)-g-P2MBA. The degree of functionalization depended on the concentrations of monomers and the irradiation dose. The films were characterized by attenuated total reflectance Fourier-transform infrared spectroscopy (ATR-FTIR), scanning electron microscopy/energy-dispersive X-ray spectrometry (SEM-EDX), thermogravimetric analysis (TGA), and contact angle. An upper critical solution temperature (UCST) of the films was demonstrated by the swelling degree as a temperature function. (SR-g-PNVCL)-g-P2MBA films demonstrated hydrolysis-mediated drug release from the polymeric prodrug, pH, and temperature sensitivity. GC-MS confirmed the presence of the drug (salicylic acid), after polymer hydrolysis. The concentration of the drug in the release media was quantified by HPLC. Cytocompatibility and thermo-/pH sensitivity of functionalized medical silicone were demonstrated in cancer and non-cancer cells.

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A IEC 62304 fornece requisitos para os fabricantes de sistemas de saúde demonstrarem sua capacidade de fornecer softwares desenvolvidos com processos, atividades e tarefas, associadas aos riscos de segurança, que devem ser demonstrados para atendimento de fins regulatórios em diversos países. Este trabalho apresenta um mapeamento sistemático da literatura envolvendo os trabalhos que reportam utilizações, vantagens e dificuldades no uso da IEC 62304 em seus quase 15 anos de existência.

IEC 62304 provides requirements for manufacturers of healthcare systems to demonstrate their ability to provide software developed with processes, activities, and tasks, associated with safety risks, which must be demonstrated to meet regulatory purposes in several countries. This work presents a systematic literature mapping involving works that report uses, advantages and difficulties in the use of IEC 62304 in its almost 15 years of existence.

IEC 62304 proporciona requisitos para que los fabricantes de sistemas de atención médica demuestren su capacidad para proporcionar software desarrollado con procesos, actividades y tareas, asociadas con riesgos de seguridad, que deben demostrarse para cumplir con los propósitos regulatorios en varios países. Este trabajo presenta un mapeo sistemático de literatura que involucran trabajos que reportan usos, ventajas y dificultades en el uso de IEC 62304 en sus casi 15 años de existencia.

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RESUMO

An important subgroup of children with special healthcare needs are children with medical complexities that require long-term intensive healthcare interventions and treatments. As medical technology continues to advance and children with complex medical needs survive the neonatal period and progress into school-age, it is essential for school nurses to be able to recognize and acutely manage complications and malfunctions of devices in children requiring assistance from medical devices. An example of a common medical device includes central venous access devices that allow for access to the bloodstream to obtain blood for laboratory testing or to infuse medications or nutrition. These devices put children at serious medical or surgical risk when they malfunction or become infected, so it is important for healthcare providers, especially school nurses who are the first responders in schools, to recognize malfunctions and initiate appropriate care management.

Assuntos