Comparative effectiveness research of different testing methods in functional quality inspection of precision surgical instruments / 中国医学装备

Objective:To compare the testing effects of different testing methods in the functional inspection of precision surgical scissors and needle holders.Methods:By consulting relevant literature and professional books,three testing methods and materials for precision surgical scissors and needle holders were selected.The cutting performance of the precision surgical scissors were tested by gauze cloth,cotton wool,and silicone film method in the Interlock surgical instrument testing set.The clamping performance of precision needle holder was tested by using light,needle clips,and thread clamping method in the Interlock surgical instrument testing set.100 pieces of precision surgical scissors and needle holders which were qualified for cleaning and disinfection in the hospital were selected for effectiveness testing,and a self-made satisfaction questionnaire to investigate the satisfaction of surgeons with the use of instruments.Results:After 100 precision surgical scissors tested using three methods of gauze,cotton wool,and silicone film,the qualified number of cutting performance was 94,76,and 58,respectively,the difference was statistically significant(x2=36.526,P<0.05).The satisfaction rate of surgeons with the use of precision surgical scissors passed the silicone film test was the highest at 100%,followed by cotton wool cloth at 82.0%,and the gauze method at the worst at 67.0%,the difference was statistically significant(x2=48.439,P<0.05).After 100 precision needle holders were tested by using three methods of light irradiation,needle clamping,and wire clamping,the qualified number of clamping performance was 96,78,and 62,respectively,the difference was statistically significant(x2=38.160,P<0.05).The satisfaction rate of surgeons with the precision needle holders passed the clamp line test was the highest at 100.0%,followed by the clamp needle at 79.0%,and the worst under light at 62.0%,the difference was statistically significant(x2=57.705,P<0.05).Conclusion:The function and quality of precision surgical scissors and needle holders tested by the test objects in Interlock Surgical Instrument Test Suite can objectively and accurately reflect the functional status of surgical scissors and needle holders,provide reference for regular maintenance and upkeep of instruments,and ensure safe use of instruments.

YOLOX target detection model for automatically identifying endovascular interventional instruments on images of digital subtract angiography / 中国介入影像与治疗学

Objective To observe the value of a YOLOX target detection model for automatically identifying endovascular interventional instruments on images of digital subtract angiography(DSA).Methods DSA data of 37 patients who underwent abdominal endovascular interventional therapy were retrospectively analyzed.Totally 4 435 DSA images were captured and taken as data set,which were divided into training set(n=3 991)and verification set(n=444)at the ratio of 9∶1.Six kinds of endovascular interventional instruments were labeled.YOLOX algorithm was applied for deep learning of data in training set in order to build a target detection model,and the efficacy of the model for automatically identifying endovascular interventional instruments on DSA images was evaluated based on varification set.Results A total of 6 668 labels were put on 4 435 DSA images,aimed on Terumo 0.035in loach guide wire(n=587),Cook Lunderquist super hard guide wire(n=990),Optimed 5F with graduated pig tail catheter(n=1 680),Cordis MPA multi-functional catheter(n=667),Boston Scientific V-18 controllable guide wire(n=1 330)and Terumo 6F long sheath(n= 1 414),respectively.The training set contained 527,875,1 466,598,1 185 and 1 282,while the verification set contained 60,115,214,69,145 and 132 the above labels,respectively.The pixel accuracy of YOLOX target detection model for automatically identifying the above instruments in the verification set was 95.23%,97.32%,99.18%,98.97%,97.60%and 98.19%,respectively,with a mean pixel accuracy of 97.75%.Conclusion YOLOX target detection model could automatically identify endovascular interventional instruments on images of DSA.

Application of 3D printing technology in the precise functional reconstruction of jaws / 口腔疾病防治

@#With the development of computer-aided surgery and rapid prototyping via 3D printing technology, digital surgery has rapidly advanced in clinical practice, especially in the field of oral and maxillofacial surgery. 3D printing technology has been applied to the functional restoration and reconstruction of the jawbone. Before surgery, a 3D digital model is constructed through software to plan the scope of the osteotomy, shape the bone graft and plan the placement of the implant. Additionally, 3D models of personalized surgical instrument guides are printed prior to surgery. With these 3D-printed models and guides, accurate excision of the jaw tumor, accurate placement of the grafted bone and precise placement of implants can be achieved during surgery. Postoperative evaluation of accuracy and function shows that 3D printing technology can aid in achieving the biomechanical goals of simultaneous implant placement in jaw reconstruction, and in combination with dental implant restoration, the technology can improve patients' postoperative occlusal and masticatory functions. Nevertheless, 3D printing technology still has limitations, such as time-consuming preparation before surgery. In the future, further development of 3D printing technology, optimization of surgical plans, and alternative biological materials are needed. Based on domestic and foreign literature and our research results, we have reviewed the process and clinical application prospects of jaw reconstruction via 3D printing technology to provide a reference for oral and maxillofacial surgeons.

Evaluation of Muscle Fatigue in Spinal Surgery Instruments Based on sEMG-JASA / 中国医疗器械杂志

Based on the joint analysis of EMG spectrum and amplitude method (JASA), a study on muscle fatigue assessment of spinal surgical instruments based on surface EMG signals was carried out, and a comparative evaluation of the operating comfort before and after the optimization of spinal surgical instruments was completed. A total of 17 subjects were recruited to collect the surface EMG signals of their brachioradialis and biceps. Five surgical instruments before and after optimization were selected for data comparison, and the operating fatigue time proportion of each group of instruments under the same task was calculated based on the RMS and MF eigenvalues. The results showed that when completing the same operation task, the operation fatigue time of the surgical instruments before optimization was significantly higher than that after optimization (P<0.05); there was no significant difference in the fatigue status of brachioradialis and biceps when operating the same instrument (P>0.05). These results provide objective data and reference for the ergonomic design of surgical instruments and fatigue damage protection.

Application of self-developed rapid tracheotomy apparatus for acute tracheotomy / 中国基层医药

Objective:To investigate the application effects of self-developed rapid tracheotomy apparatus for acute tracheotomy.Methods:A total of 120 patients who underwent an acute tracheotomy in the Weihai Branch of The 970 Hospital of PLA Joint Logistics Support Force from January 2019 to December 2020 were included in this study. These patients were randomly divided into a rapid group and a conventional group, with 60 patients in each group. Patients in the rapid group underwent tracheotomy with a self-developed rapid tracheotomy apparatus. Patients in the conventional group underwent the standard steps of traditional tracheostomy. The operation time, incision length, amount of bleeding, and incidence of postoperative complications were compared between the two groups.Results:The operation time in the rapid group was significantly shorter than that in the conventional group [(4.5 ± 0.9) minutes vs. (19.3 ± 4.7) minutes, t = 23.86, P < 0.001]. The length of incision in the rapid group was significantly shorter than that in the conventional group [(2.8 ± 0.3) cm vs. (4.2 ± 1.3) cm, t = 8.68, P < 0.001]. The amount of bleeding during the surgery in the rapid group was significantly less than that in the conventional group [(4.4 ± 1.6) mL vs. (11.8 ± 4.1) mL, t = 12.99, P < 0.001]. The incidence of postoperative complications in the rapid group was significantly lower than that in the conventional group ( χ2 = 4.66, P = 0.031). Conclusion:The self-developed rapid tracheotomy apparatus for acute tracheotomy can be used to establish an artificial airway quickly and minimally invasively by simplifying the operational steps. It is remarkably innovative to increase safety with open-view operations and decrease the incidence of complications. It can be repeatedly sterilized and reused, which is worthy of clinical application and popularization.

Significance of target volume delineation of tumor bed according to metal clips or seroma in determing tumor bed position during radiotherapy after breast-conserving surgery for breast cancer / 肿瘤研究与临床

Objective:To investigate the differences between the mental clips placed intraoperatively and the tumor bed's target volume delineation of seroma based on CT scanning during radiotherapy for breast cancer patients who received breast-conserving surgery in the persuit of a better solution to determine the tumor bed position.Methods:The clinical data of 13 patients with early breast cancer who received postoperative radiotherapy after breast-conserving surgery at Beijing Shijingshan Hospital and Beijing Shijitan Hospital of Capital Medical University from December 2020 to January 2022 were retrospectively analyzed. They all had surgical clips implanted during the surgery. The following methods were used to delineate the target volume of tumor bed, including gross target volume delineation of tumor bed based on the mental clips (GTVtb-Clip), the tumor bed's gross target volume delineation of seroma based on CT scanning (GTVtb-Seroma), and the combination of both (GTVtb-C+S). The volume, diameter on three coordinate axis, neutral point displacement and conformability of these delineation methods were compared.Results:The volume of GTVtb-Clip, GTVtb-Seroma and GTVtb-C+S was (25±10) cm 3, (38±17) cm 3, (49±20) cm 3, and the differences were statistically significant (all P<0.05). The diameter on X axis was (4.7±1.2) cm, (5.3±1.4) cm, (5.7±1.6) cm, respectively in GTVtb-Clip, GTVtb-Seroma and GTVtb-C+S; the diameter on Y axis was (4.6±1.7) cm, (5.0±1.6) cm, (5.7±1.7) cm, respectively in GTVtb-Clip, GTVtb-Seroma and GTVtb-C+S; the diameter on Z axis was (4.4±1.5) cm, (5.2±1.4) cm, (5.6±1.4) cm in GTVtb-Clip, GTVtb-Seroma and GTVtb-C+S. The differences in the diameter of GTVtb-Clip and GTVtb-C+S on X,Y, Z axis were statistically significant (all P<0.05); the differences in the diameter of GTVtb-Seroma and GTVtb-C+S on X, Z axis were statistically significant (all P<0.05); the difference in the diameter of GTVtb-Clip and GTVtb-Seroma on X axis was statistically significant ( P<0.05) .Neutral point displacement was (5.8±1.6) cm, (5.5±1.9) cm, (6.0±1.7) cm, respectively of GTVtb-Clip, GTVtb-Seroma, GTVtb-C+S, and the difference was not statistically significant ( P>0.05). Conformability of GTVtb-Clip and GTVtb-Seroma, GTVtb-Clip and GTVtb-C+S, GTVtb-Seroma and GTVtb-C+S was 0.412±0.112, 0.525±0.095, 0.774±0.112,respectively, and the differences were statistically significant (all P<0.05). Conclusions:During radiotherapy after breast-conserving surgery for breast cancer, compared with the single method, the combination of GTVtb-Clip and GTVtb-Seroma can better cover the real tumor bed, thus reducing the omission of tumor bed and recurrence rate. CT position should better take place at 4 to 8 weeks for patients receiving radiotherapy after breast-conserving surgery, and target volume of tumor bed will be delineated based on the postoperative changes of both mental clips and seroma.

Research on the management effect of information nurse in sterilization supply center in new surgical instruments / 中国实用护理杂志

Objective:To explore the management effect of information nurses in the reception of new surgical instruments and to provide a reference for improving the quality of instrument management in central sterile supply department.Methods:This was a quasi-experimental study. A total of 45 packages of 227 pieces received from January to July 2021 in central sterile supply department of the First Affiliated Hospital of Zhengzhou University were selected as the control group by convenience sampling method, and the conventional mode was used to receive new surgical instruments. Another 51 packages of 259 pieces received from November 2021 to June 2022 were selected as the observation group, and the information nurse management system was set up to receive new surgical instruments. The observation and comparison of the time to complete the receipt of new surgical instruments in central sterile supply department, the incidence of adverse events in the operation process and the satisfaction of medical and nursing staff with the management of new surgical instruments were conducted.Results:The receiving time for newly added surgical instruments of the observation group was 6.00(5.00, 8.00) hours and that of the control group was 28.00(20.00, 42.50) hours, with a statistically significant difference between the two groups ( Z = - 8.26, P<0.01). The incidence of adverse events of new surgical instruments was 0.4%(1/259) in the observation group and 6.2%(14/227) in the control group, there was significant difference between the two groups ( χ2 = 13.52, P<0.01). The satisfaction degree of medical staff in the observation group was 100% (50/50), higher than 72% (36/50) in the control group, and the difference between the two groups was statistically significant ( χ2 = 16.28, P<0.01). Conclusions:The implementation of the post of information nurse in the special post responsibility system in the management of new surgical instruments can effectively manage the specifications of surgical instruments, reduce the receiving time and the occurrence of adverse events, improve the satisfaction of medical staff.

Scientific and technological innovation drives the development of minimally invasive surgery / 中华消化外科杂志

Scientific and technological innovation is the most important role in driving the development of minimally invasive surgery. After more than 30 years of development, modern mini-mally invasive surgery represented by laparoscopic surgery has gradually matured. Various types of minimally invasive surgeries have been popularized, and the difficulty of surgery has changed from extreme to limit. Surgical equipments and instruments can meet the needs of most clinical operations. The future of minimally invasive surgery has reached a crossroad, and only scientific and technological innovation can promote the development of minimally invasive surgery change lanes and overtake, ushering in new development, new methods, and a new world. For innovation, the most important thing is not knowledge, but vision and ideas. A new technological revolution will inevitably bring about changes in the industry. What changes will be ushered in the operation and treatment of diseases in the future? What will be the breakthrough of minimally invasive surgery? It is worth to wait and see. The authors discuss the development direction of minimally invasive surgery based on the recent application of hot technologies in laparoscopic surgery.

Percentual de utilização de instrumentais em procedimentos cirúrgicos / Percentage of use of instruments in surgical procedures / Porcentaje de uso de instrumentos en procedimientos quirúrgicos

Objetivo: analisar o percentual de instrumentais cirúrgicos que compõem a caixa de laparotomia exploradora e não são utilizados durante as cirurgias. Método: estudo descritivo, transversal com abordagem quantitativa, que contabilizou instrumentais constituintes da caixa de laparotomia exploradora utilizados e não utilizados durante 13 cirurgias realizadas em um período de 17 dias, em um hospital do interior paulista. Resultados: nas 13 cirurgias analisadas, obteve-se um total de 1300 (100%) pinças presentes nas caixas, onde 832 (64%) não foram utilizadas e 468 (36%) foram utilizadas. Nos tempos cirúrgicos, o maior número de uso foi de 166 (35,5%) artigos, para preensão e afastadores. Conclusão: houve 64% de instrumentais não utilizados nas cirurgias analisadas. Há necessidade de implementar estratégias gerenciais que reduzam os números encontrados e, consequentemente, reduzam gastos, para gerar menor desperdício e reduzir falhas no gerenciamento de recursos materiais.

Objective: to analyze the percentage of surgical instruments that make up the operating laparotomy box and are not used during surgeries. Method: descriptive, cross-sectional study with quantitative approach, which counted instrumental constituents of the exploratory laparotomy box used and not used during 13 surgeries performed in a period of 17 days, in a hospital in the interior of São Paulo. Results: in the 13 surgeries analyzed, a total of 1300 (100%) tweezers were obtained in the boxes, where 832 (64%) were not used and 468 (36%) were used. In surgical times, the highest number of use was 166 (35.5%) articles, for seizures and reparators. Conclusion: there were 64% of instruments not used in the analyzed surgeries. There is a need to implement management strategies that reduce the numbers found and, consequently, reduce expenses, to generate less waste and reduce failures in the management of material resources.

Objetivo: analizar el porcentaje de instrumentos quirúrgicos que componen la caja de laparotomía quirúrgica y no se utilizan durante las cirugías. Método: estudio descriptivo, transversal con enfoque cuantitativo, que contó constituyentes instrumentales de la caja de laparotomía exploratoria utilizada y no utilizada durante 13 cirugías realizadas en un período de 17 días, en un hospital del interior de São Paulo. Resultados: en las 13 cirugías analizadas, se obtuvieron un total de 1300 (100%) pinzas en las cajas, donde no se utilizaron 832 (64%) y 468 (36%). En tiempos quirúrgicos, el mayor número de uso fue de 166 (35,5%) artículos, para convulsiones y reparadores. Conclusión: hubieran 64% de instrumentos no utilizados en las quirurgias analizadas. Es necesario implementar estrategias de gestión que reduzcan los números encontrados y, en consecuencia, reduzcan los gastos, para generar menos residuos y reducir las fallas en la gestión de los recursos materiales.

Controle de materiais e instrumental cirúrgico no intraoperatório: percepção e estratégias utilizadas por instrumentadores / Control of materials and surgical instruments in the intraoperative period: perception and strategies used by surgical technologists

Objetivo: Conhecer as estratégias utilizadas por instrumentadores para o controle de materiais e instrumental cirúrgico no intraope-ratório. Método: Estudo descritivo e qualitativo, realizado em hospital privado. Participaram 13 instrumentadores cirúrgicos. Os dados foram coletados entre agosto e setembro de 2022 por meio de entrevistas gravadas em áudio. Como instrumento para coleta dos dados, utilizou-se um roteiro estruturado, contendo sete perguntas, e questões referentes ao perfil da amostra. Foram incluídos técnicos de enfermagem forma-dos, atuantes como instrumentadores cirúrgicos. Foram excluídos instrumentadores ausentes no período da coleta de dados. Os dados foram analisados por meio da análise de conteúdo. Resultados: Com base na análise dos dados, emergiram quatro categorias: protocolo de cirurgia segura; controle de materiais e instrumentais; desafios no seguimento do protocolo de cirurgia segura; facilitadores do seguimento do proto-colo de cirurgia segura. Conclusão: Pôde-se conhecer as estratégias utilizadas por instrumentadores cirúrgicos para o controle dos materiais dispostos na mesa de instrumentação durante o intraoperatório. Pressa de profissionais, falta de adesão e o não seguimento de rotinas insti-tucionais caracterizam-se como desafios para o seguimento das etapas do protocolo de cirurgia segura

Objective: To know the strategies used by surgical technologists to control materials and surgical instruments in the intraopera-tive period. Method: This qualitative descriptive study was carried out in a private hospital. A total of 13 surgical technologists participated in the research. Data were collected during audio-recorded interviews between August and September 2022. The data collection instrument was a structured questionnaire consisting of seven questions, as well as items related to the sample profile. We included trained nursing technicians, working as surgical technologists. Those who were absent during data collection were excluded. Data were analyzed by con-tent analysis. Results: The data analysis produced four categories: surgical safety checklist; control of materials and instruments; challenges in following the surgical safety checklist; facilitators to following the surgical safety checklist. Conclusions: The study allowed us to know the strategies used by surgical technologists to control the materials arranged on the instrument table during the intraoperative period. The haste of professionals, lack of adherence, and non-compliance with institutional routines are regarded as challenges in following the steps of the surgical safety checklis

Objetivo: Conocer las estrategias utilizadas por instrumentistas para el control de materiales e instrumental quirúrgico en el intraope-ratorio. Método: Estudio descriptivo y cualitativo, realizado en hospital privado. Participaron 13 instrumentistas quirúrgicos. Los datos fueron colectados entre agosto y septiembre de 2022 por medio de entrevistas grabadas en audio. Como instrumento para colecta de los datos, se utilizó um guion estructurado, conteniendo siete preguntas, y cuestiones referentes al perfil de la muestra. Fueon incluidos técnicos de enfermería egre-sados, actuantes como instrumentistas quirúrgicos. Fueron excluidos instrumentistas ausentes en el período de la colecta de datos. Los datos fue-ron analizados por medio del análisis de contenido. Resultados: Con base en el análisis de los datos, emergieron cuatro categorías: protocolo de cirugía segura; control de materiales e instrumentales; desafíos en el seguimiento del protocolo de cirugía segura; facilitadores del seguimiento del protocolo de cirugía segura. Conclusión: Se pueden conocer las estrategias utilizadas por instrumentistas quirúrgicos para el control de los materiales dispuestos en la mesa de instrumentación durante el intraoperatorio. Prisa de profesionales, falta de adhesión y el no seguimiento de rutinas institucionales se caracterizan como desafíos para el seguimiento de las etapas del protocolo de cirugía segura

Avaliação do desempenho de detergentes para limpeza: validação de uma proposta / Evaluación del rendimiento de detergentes para limpieza: validación de una propuesta / Performance evaluation of cleaning detergents: a proposal validation

Resumo Objetivo Elaborar e validar uma proposta para avaliação do desempenho de detergentes na limpeza de produtos para saúde. Métodos Foi desenvolvida proposta para avaliar o desempenho de detergentes rotineiramente utilizados em Centros de Material e Esterilização por meio de um estudo experimental utilizando monitores de limpeza e lavadora ultrassônica. Monitores de limpeza foram dispostos na cuba de uma lavadora ultrassônica. O parâmetro adotado para avaliação do desempenho dos detergentes foi a remoção completa da sujidade dos monitores. Foram avaliados resíduos de proteínas de amostras tubulares de aço inoxidável e de policloreto de polivinila, após contato com carga orgânica desafio e limpeza em lavadora ultrassônica. Foram considerados reprovados os testes que apresentavam gradação da coloração azul e aprovados os testes que permaneciam com a coloração marrom, como indicado nas instruções de uso. Todos os testes foram realizados em triplicata ou quintuplicada. Adicionalmente, foram realizados controles positivos. Resultados O uso do teste com tiras de papel alumínio, foil test, mostrou-se de fácil aplicação e capaz de diferenciar a cavitação em diferentes pontos da cuba da lavadora ultrassônica. Os indicadores de limpeza impregnados com resíduos orgânicos e os monitores de proteína utilizados na proposta apresentaram resultados variados, possibilitando diferenciar a eficácia da limpeza para cada detergente utilizado. Portanto, além de disponíveis no mercado, são ferramentas simples que possibilitaram a avaliação dos detergentes. Conclusão A proposta desenvolvida mostrou-se factível e simples e considerou produtos e equipamentos rotineiramente encontrados em Centros de Material e Esterilização.

Resumen Objetivo Elaborar y validar una propuesta para evaluación del rendimiento de detergentes en la limpieza de productos de salud. Métodos Mediante un estudio experimental con el uso de monitores de limpieza y lavadora ultrasónica, se elaboró una propuesta para evaluar el rendimiento de detergentes utilizados habitualmente en centros de material y esterilización. Se colocaron monitores de limpieza en el tanque de una lavadora ultrasónica. El parámetro adoptado para evaluar el rendimiento de los detergentes fue la eliminación completa de la suciedad de los monitores. Se evaluaron residuos de proteínas de muestras tubulares de acero inoxidable y de cloruro de polivinilo, después del contacto con carga orgánica desafío y limpieza en lavadora ultrasónica. Las pruebas que presentaron una gama de coloración azul fueron reprobadas, y las que permanecían con coloración marrón fueron aprobadas, como indicado en las instrucciones de uso. Todas las pruebas fueron realizadas en triplicado o quintuplicado. Adicionalmente se realizaron controles positivos. Resultados El uso de las pruebas con tiras de papel de aluminio, foil test, demostró ser de fácil aplicación y con capacidad para diferenciar la cavitación en diferentes puntos del tanque de la lavadora ultrasónica. Los indicadores de limpieza impregnados de residuos orgánicos y los monitores de proteína utilizados en la propuesta presentaron resultados variados, lo que permitió diferenciar la eficacia de la limpieza en cada detergente usado. Por lo tanto, además de estar disponibles en el mercado, son herramientas simples que permiten la evaluación de los detergentes. Conclusión La propuesta desarrollada demostró ser factible y simple, e incluyó productos y equipos encontrados habitualmente en centros de material y esterilización.

Abstract Objective To develop and validate a proposal to evaluate the performance of cleaning detergents for health products. Methods A proposal was developed to evaluate the performance of detergents routinely used in Materials and Sterilization Center through an experimental study using cleaning monitors and an ultrasonic washer. Cleaning monitors were placed in the ultrasonic washer tub. The parameter adopted to evaluate the performance of detergents was the complete removal of stain from the monitors. Protein residues from tubular stainless steel and polyvinyl chloride samples were evaluated after contact with challenge organic matter and cleaning in an ultrasonic washer. Tests that showed a gradation of blue color were considered to have failed and tests that remained with a brown color were approved, as indicated in instructions for use. All tests were performed in triplicate or quintuplicate. Additionally, positive controls were performed. Results The use of the foil test with strips proved to be easy to apply and capable of differentiating cavitation at different points in the ultrasonic washer tub. The cleaning indicators impregnated with organic residues and the protein monitors used in the proposal presented varied results, making it possible to differentiate the cleaning effectiveness for each detergent used. In addition to their availability on the market, these simple tools made it possible to evaluate the detergents. Conclusion The proposal developed proved to be feasible and simple and considered products and equipment routinely found in Materials and Sterilization Centers.

Validación de un instrumento para evaluar el nivel de conocimiento en la aplicación de fórceps obstétrico / Validation of an instrument to assess the level of knowledge about the application of obstetric forceps

Resumen OBJETIVO: Diseñar y validar un instrumento para evaluar el nivel de conocimiento en la aplicación del fórceps Salinas en médicos residentes de Ginecología y Obstetricia. MATERIALES Y MÉTODOS: Estudio descriptivo, transversal, tipo validación de un instrumento. El primer constructo se desarrolló con base en el marco teórico; el cuestionario fue objeto de análisis por parte de un grupo de expertos que se basaron en la metodología Delphi. Se obtuvo un constructo de 20 preguntas y se emprendió un estudio para evaluar la pertinencia del instrumento. La confiabilidad se evaluó con el coeficiente de Kuder-Richardson, prueba Kaiser-Meyer-Olkin y de esfericidad de Bartlett. Los datos se procesaron en el programa SPSS versión 21. RESULTADOS: El instrumento se aplicó a 66 médicos residentes con media de edad de 28.5 ± 0.7 años. El coeficiente de Kuder-Richardson fue 0.608. Las pruebas de Kaiser-Meyer-Olkin y Bartlett mostraron que se trató de un instrumento multidimensional. CONCLUSIONES: Se obtuvo un instrumento válido, confiable y multidimensional para determinar el nivel de conocimientos en relación con la aplicación del fórceps Salinas en médicos residentes de Ginecología y Obstetricia.

Abstract OBJECTIVE: To design and validate an instrument to assess the level of knowledge of Salinas forceps application in Gynecology and Obstetrics residents. MATERIALS AND METHODS: Descriptive, cross-sectional, validation-type study of an instrument. The first construct was developed based on the theoretical framework; the questionnaire was analyzed by a group of experts based on the Delphi methodology. A construct of 20 questions was obtained and a study was undertaken to assess the relevance of the instrument. Reliability was evaluated with the Kuder-Richardson coefficient, Kaiser-Meyer-Olkin test and Bartlett's sphericity test. The data were processed in SPSS version 21. RESULTS: The instrument was applied to 66 resident physicians with a mean age of 28.5 ± 0.7 years. The Kuder-Richardson coefficient was 0.608. The Kaiser-Meyer-Olkin and Bartlett tests showed that it was a multidimensional instrument. CONCLUSIONS: A valid, reliable and multidimensional instrument was obtained to determine the level of knowledge in relation to the application of Salinas forceps in Gynecology and Obstetrics residents.

Características clínicas y resultados quirúrgicos de pacientes pediátricos intervenidos por cirugía robótica / Clinical characteristics and surgical outcomes of pediatric patients who underwent robotic surgery

INTRODUCCIÓN. La cirugía robótica se realiza gracias al sistema telemanipulado, alcanzando tareas repetitivas, precisas y mínimamente invasivas. En Ecuador inició en el año 2016, incluyendo este procedimiento a pediatría en el 2021. OBJETIVO. Describir las características clínicas y resultados quirúrgicos de pacientes pediátricos intervenidos por cirugía robótica. MATERIALES Y MÉTODOS. Estudio transversal analítico. Población de 278 y muestra de 40 datos de historias clínicas electrónicas de pacientes pediátricos intervenidos por cirugía robótica de agosto del 2021 a marzo del 2022 en el Hospital Carlos Andrade Marín. Criterios de inclusión: pacientes pediátricos intervenidos por cirugía robótica en el Hospital de Especialidades Carlos Andrade Marín. Criterios de exclusión: pacientes adultos, haber sido intervenidos quirúrgicamente por técnicas abiertas o laparoscópica. La información se obtuvo del sistema AS400; se creó una base de datos anonimizando a los pacientes. Se aplicó un análisis univariado y para determinar significancia estadística se utilizó la prueba de Chi-2. La información recolectada fue analizada en el programa estadístico International Business Machines Statistical Package for the Social Sciences. RESULTADOS: De los pacientes del estudio: 45,00% (18; 40) era adolescente. El 52,50% (21; 40) no presentó comorbilidades. 50,00% (20; 40) de las intervenciones fueron colecistectomía. 55% (22; 40) fué por diagnóstico prequirúrgico y posquirúrgico gastrointestinal y hepático. El 95,00% (38; 40) no presentó complicaciones. El 100% (40; 40) presentó sangrado G1. El 97,50% (39; 40) no presentó eventos, y el 72,5% (29; 40) no presentó dolor. El promedio de peso de los pacientes fue 41 kilogramos, con una media de 3 días de estancia hospitalaria, un promedio de 65 minutos de cirugía total y 15 minutos de docking, los cuales son estadísticamente significativos con una p= 0,001. CONCLUSIONES. Se registró las características clínicas y resultados quirúrgicos de pacientes pediátricos intervenidos por cirugía robótica. La cirugía robótica se aplicó con seguridad en pacientes pediátricos del Hospital Carlos Andrade Marín.

INTRODUCTION. Robotic surgery is performed thanks to the telemanipulated system, achieving repetitive, precise and minimally invasive tasks. In Ecuador it started in the Hospital de Especialidades Carlos Andrade Marín in 2016, including this procedure to pediatrics in 2021. OBJECTIVE. To describe the clinical characteristics and surgical outcomes of pediatric patients operated by robotic surgery. MATERIALS and METHODS. Analytical cross-sectional study. Population of 278 and sample of 40 data from electronic medical records of pediatric patients operated by robotic surgery from August 2021 to March 2022 at the Carlos Andrade Marin Hospital. Inclusion criteria: pediatric patients who underwent robotic surgery at the Hospital de Especialidades Carlos Andrade Marín. Exclusion criteria: adult patients, having undergone open or laparoscopic surgery. The information was obtained from the AS400 system; a database was created by anonymizing the patients. Univariate analysis was applied and the Chi-2 test was used to determine statistical significance. The information collected was analyzed in the statistical program International Business Machines Statistical Package for the Social Sciences. RESULTS: Of the patients in the study: 45,00% (18; 40) were adolescents. 52,50% (21; 40) had no comorbidities. 50,00% (20; 40) of the interventions were cholecystectomy. 55% (22; 40) were for preoperative and postoperative gastrointestinal and hepatic diagnosis. 95,00% (38; 40) had no complications. 100% (40; 40) presented G1 bleeding. 97.50% (39; 40) did not present events, and 72,5% (29; 40) did not present pain. The average weight of the patients was 41 kilograms, with a mean hospital stay of 3 days, an average of 65 minutes of total surgery and 15 minutes of docking, which are statistically significant with a p= 0,001. CONCLUSIONS. The clinical characteristics and surgical results of pediatric patients who underwent robotic surgery were recorded. Robotic surgery was safely applied in pediatric patients at the Carlos Andrade Marin Hospital.

Evaluation of Ventricular Remodeling and Prognosis in Patients with Aortic Stenosis Who Underwent Surgical or Percutaneous Transcatheter Aortic Valve Replacement

ABSTRACT Introduction: Aortic stenosis is the most common heart valve disease in the world, and patients that present with symptoms have a high mortality rate. Aortic valve replacement has the objective of promote left ventricular remodeling, reduce symptoms, and increase overall survival. The objective of this study is to evaluate reverse remodeling of the left ventricle in patients with severe and symptomatic aortic stenosis who underwent surgical or percutaneous transcatheter aortic valve replacement. Methods: This is a longitudinal, prospective, non-concurrent, non-randomized unicentric study with patients who underwent aortic valve replacement. Echocardiogram was performed before and after replacement procedure to evaluate several remodeling indexes. Results: Of 91 patients, 77 (84.6%) underwent surgical aortic valve replacement, and 14 (15.4%) underwent percutaneous transcatheter aortic valve replacement. Mean age was 68,96±11,98 years, and most patients were male. Remodeling evaluation revealed that patients who decreased left ventricular index mass (53% vs. 38.9%; P=0,019) and those who reduced the mass/volume ratio (30.4% vs. 68.9%; P<0,001) presented with positive left ventricular remodeling. No endpoint difference was found in those with positive remodeling. Conclusion: Regarding the left ventricular remodeling in patients with severe and symptomatic aortic valve stenosis who underwent percutaneous transcatheter or surgical valve replacement, there is a positive increment in remodeling, however it remains in concentric hypertrophic shape. Implication of these findings remains uncertain and to be studied in large dedicated trials with clinical endpoints.

Study on the feasibility and safety of a novel single-port robotic surgical system in zero ischemic partial nephrectomy / 中华泌尿外科杂志

Objective:To investigate the feasibility and safety of a novel single-port robotic surgical system with flexible 3D endoscope and deformable surgical instruments in zero ischemic partial nephrectomy.Methods:From May 2021 to October 2021, a prospective study on patients with renal tumor who plan to receive zero ischemic partial nephrectomy was conducted. Inclusion criteria included over 18 years old, body index between 18.5 to 30.0 kg/m2, American Society of Anesthesiologists Score ranged from 1 to 3 points, cooperation with the follow-up and related examinations, voluntary in participating the clinical trial and signing the informed consent. Exclusion criteria included patients with other co-existed malignant tumors or a medical history of other malignant tumors, the patients who have received the same urological surgery in the past, the patients who underwent or plan to undergo other major operations 3 months before or after the surgery, the patients with active pulmonary tuberculosis or severe systemic diseases, the patients to be considered not suitable to enroll in by the researchers. A novel single-port robotic surgical system was used to perform the surgery. The system consiststed of a remote control console, a surgical equipment cart, a four-arm operation cart and deformable robotic instruments which were reusable. The two-section deformable robotic instruments were able to bend in four directions and carried different surgical instruments such as unipolar scissors, bipolar grasping forceps and needle holders. The deformable robotic instruments entered the body through a special trocar with single hole and multi-channel, and then unfolded in a triangle. By bending instruments, surgeons could perform single-port robotic surgery without the trouble of "chopstick effect" or "reverse direction" . Four cases of single-port partial nephrectomy were carried out. Under general anesthesia, the patients were taken the lateral recumbent position, with elevated waist and lowered head and feet. A 3-4 cm incision was taken layer by layer along the lateral edge of the rectus abdominis at the umbilicus level. A special 2.5 cm robotic trocar was set into the cavity, and a high-definition 3D laparoscopic lens and a snake shaped mechanical arm were then put into the abdominal cavity through the trocar. All operations were performed by transperitoneal approach with an auxiliary port through the same or a different skin incision if necessary. Tumor resection and renal reconstruction were performed by the way of zero ischemia. The perioperative parameters such as tumor size, operation time, intraoperative bleeding and postoperative complications were analyzed.Results:Four patients were involved, including 2 males and 2 females, with 2 of them having a history of hypertension. The ECOG scores were all 0, and KPS score was 100 in 3 cases and 90 in 1 case. Preoperative mean serum creatinine was (76.8±18.8)μmol/L (range 70-104 μmol/L). The tumors were located on the left in 3 cases and on the right in 1 case. The diameter of the tumor ranged from 1.1 to 2.8 cm, with the TNM classification of T 1a. The R. E.N.A.L. scores were 4a, 7p, 6p and 4P respectively. The first operation was performed by pure single-port surgery, and the other 3 cases were performed with the help of an auxiliary port to ensure the safety .The operation time ranged from 155 min to 210 min, and the intraoperative bleeding ranged from 20 ml to 170 ml. Postoperative pathology showed 2 cases of renal clear cell carcinoma with negative margin and 2 cases of angiomyolipoma. No severe complications, such as bleeding or urinary leakage, were observed during the perioperative period, and the change of serum creatinine was insignificant before discharge and before operation( P=0.24). Conclusions:A robotic single-port partial nephrectomy can be successfully carried out by using this novel single-port robotic surgical system with flexible 3D endoscope and deformable surgical instruments.

Role of a continuously developed information traceability system in the management of foreign medical instrument packages / 中国基层医药

Objective:To investigate the role of a continuously developed information traceability system in the management of foreign medical instrument packages in central sterile supply department (CSSD).Methods:A total of 350 foreign medical instrument packages processed by CSSD during May to June 2021 in Shenzhen Hospital, University of Chinese Academy of Sciences were included in the control group. These packages were managed with the original information traceability system. A total of 375 foreign medical instrument packages processed by CSSD during July to August 2021 in Shenzhen Hospital, University of Chinese Academy of Sciences were included in the observation group. These packages were managed with a continuously developed information traceability system. Step-by-step reminding and early warning control were performed according to the problems encountered in actual operation. Quality management indexes of foreign medical instrument packages and the incidence of adverse events were compared between the two groups.Results:The percentages of good cleaning and functional integrity of the foreign medical instrument packages, functional integrity of sterile barrier after sterilization, timely monitoring of biological culture results, standardized handover, postoperative cleaning and detoxification in the observation group were 96.0% (360/375), 98.7% (370/375), 99.5% (373/375), 98.9% (371/375), and 99.7% (374/375), which were significantly higher than those in the control group [84.2% (295/350), 92.6% (325/350), 91.4% (320/350), 89.1% (312/350), 84.9% (297/350), χ2 = 28.48, 15.40, 27.72, 31.80, 58.12, all P < 0.05]. The percentages of instrument breaking, instrument mixed or damaged, wet packages, information label error, oversized and overweighed packages in the observation group were 0.8% (3/375), 0.3% (1/375), 0.8% (3/375), 0.3% (1/375), and 0.5% (2/375), respectively, which were significantly lower than those in the control group [4.3% (15/350), 4.6% (16/350), 3.4% (12/350), 10.0% (35/350), 7.7% (27/350), χ2 = 9.08, 14.65, 6.17, 36.34, 24.31, all P < 0.05]. Conclusion:A continuously developed information traceability system is very important for management of medical instrument processed in CSSD. A developmental traceability system not only continuously improves quality control of foreign medical instrument and decreases the incidence of adverse events, but also increases the responsibility and enthusiasm of staff, thereby ensuring the safety for patients.

Não conformidades em produtos para saúde: fatores que comprometem a segurança do paciente / Nonconformities in health products: factors that compromise patient safety

Objetivo: Identificar as causas de não conformidades em Produtos para Saúde distribuídos por um centro de esterilização localizado na região metropolitana de Belo Horizonte, MG, Brasil. Métodos: Estudo descritivo, de natureza quantitativa que foi realizado entre janeiro e dezembro de 2019. Os dados foram coletados através de um instrumento estruturado para avaliação sistemática dos itens e analisados estatisticamente de forma descritiva. Resultados: Foram avaliados 2.944 produtos para saúde, que variou de 66 a 284/mês, com média de 245 (±56). Foram identificados 24 itens inadequados o que gerou uma taxa de não conformidade de 0,96%. As principais causas foram atribuídas à embalagem manchada (20,8%), aos produtos para saúde sem identificação (20,8%), problemas na selagem (16,6%) e embalagem violada (12,5%). Conclusão: As principais causas de não conformidades encontradas sugerem a realização de um controle criterioso de qualidade em cada etapa do reprocessamento de materiais para não comprometer a segurança do paciente.

Objective: To identify the causes of non-conformities in Health Products distributed by a sterilization center located in the metropolitan region of Belo Horizonte, MG, Brazil. Methods: This was a study described, of a quantitative nature that was carried out between January and December 2019. The data were collected through a structured instrument for systematic evaluation of the items and analyzed using the technique of descriptive statistics. Results: A total of 2,944 health products were evaluated during the study period, which ranged from 66 to 284/month, with an average of 245 (± 56). There were 24 inappropriate items that generated a noncompliance rate of 0.96%. The main causes were attributed to stained packaging (20.8%), health products without identification (20.8%), sealing problems (16.6%) and violated packaging (12.5%). Conclusion: The main causes of nonconformities found in this study suggest the performance of a careful quality control at each stage of the reprocessing cycle so as not to compromise patient safety.

Central sterile services department: screening of automated cleaning in liposuction cannulae / Central de material y esterilización: seguimento de limpeza automatizado en las cánulas de liposucción / Centro de materiais e esterilização: rastreamento da limpeza automatizada nas cânulas de lipoaspiração

ABSTRACT Objective: To evaluate the effectiveness of automated cleaning of 4 mm liposuction cannulas using ultrasonic washer machine, screening for dirt using a cannulate microscope device and the screening of viable strains of Staphylococcus aureus, with microbiological analysis. Method: Experimental study with 14 units of 4 mm liposuction cannulas performed at the Central Sterile Services Department and at the Microbiology Laboratory of a Hospital Complex, located in Porto Alegre, RS, Brazil, from October 2018 to April 2019. Results: Of the 14 liposuction cannulas that constituted the sample, 42.9% remained dirty despite automated cleaning, and all of them showed recovery of viable microrganisms in the microbiological laboratory. Conclusion: The study showed that it is not possible to ensure the cleaning efficacy of automated cleaning of 4 mm liposuction cannulas, especially due to the conformation of the material with internal spaces with accumulation of dirt.

RESUMEN Objetivo: Evaluar la efectividad de la limpieza automatizada mediante la lavadora ultrasónica de las cánulas de liposucción de 4 mm, mediante el rastreo de la suciedad interna, utilizando el dispositivo de microscopía para canulados y el cribado de cepas viables de Stphylococcus aureus, mediante análisis microbiológico. Método: Estudio experimental realizado con 14 cánulas de liposucción de 4 mm en un Centro de Material y Esterilización y en el laboratorio de microbiología de un hospital de Porto Alegre, Brasil, de octubre de 2018 a abril de 2019. Resultados: De 14 cánulas de liposucción que constituyeron la muestra, el 42,9% permaneció sucio, incluso después de la limpieza automática y todos mostraron recuperación de micoorganismos viables en el laboratorio de mocrobiogía . Conclusión: El estudio mostró que no es posible garantizar la efectividad de la limpieza automática en las cánulas de liposucción de 4 mm, especialmente por la conformación del material con lugares donde se acumula suciedad.

RESUMO Objetivo: Avaliar a eficácia da limpeza automatizada realizada com lavadora ultrassônica de cânulas de aspiração de 4 mm, por meio do rastreamento de sujidade interna feito com aparelho de microscopia para canulados e o rastreamento de cepas viáveis de Staphylococcus aureus, por análise microbiológica. Métodos: Estudo experimental realizado com 14 cânulas de lipoaspiração de 4 mm em um Centro de Material e Esterilização e no laboratório de microbiologia de um hospital de Porto Alegre, Brasil, no período de outubro de 2018 a abril de 2019. Resultados: Das 14 cânulas de lipoaspiração que constituíram a amostra, 42,9% permaneceram com sujidade mesmo após a limpeza automatizada e todas apresentaram recuperação de microrganismos viáveis nos testes do laboratório de microbiologia. Conclusão: O estudo mostrou não ser possível garantir a eficácia da limpeza automatizada nas cânulas de lipoaspiração de 4 mm, em especial devido à conformação do material com locais onde acumula sujidade.

No-Touch Saphenous Vein - Vascular Damage and the London Connection

ABSTRACT In this review, I summarise the circumstances leading to the collaboration between London and Örebro on the basic research performed to study potential mechanisms underlying the improved patency of saphenous veins harvested by the no-touch technique. Histological studies reveal various forms of vascular damage to saphenous vein grafts harvested in conventional coronary artery bypass grafting (CABG) whereas no-touch grafts retain a normal architecture. The perivascular fat that remains intact on no-touch saphenous vein grafts seems to play a particularly important role as the "protector" of all layers of the graft. In addition, the perivascular fat is a source of adipose cell-derived factors that may contribute to the success of the no-touch technique. While a number of trials have compared no-touch with conventional grafts following CABG, these have generally been limited to short follow-up periods, low patient numbers, and inadequate histological data. When handling no-touch saphenous vein at harvesting, there is no direct contact of the vein by surgical instruments, spasm does not occur, and high-pressure intraluminal distension is not required. While damage to both endothelial and vascular smooth muscle cells are evident at the microscopic and ultrastructural level in conventional saphenous vein grafts, their structure in no-touch grafts is preserved. Also, in no-touch veins, the vasa vasorum remains intact and transmural blood supply is maintained. This microvascular network is disrupted during conventional harvesting, a situation likely to stimulate processes involved in graft occlusion. The use of excess graft material for histology is to be encouraged for the assessment of vascular damage and even surgeon competence. If you don't look, you don't find.