Patrón menstrual y reserva ovárica en pacientes con salpingectomía y oclusión tubárica para esterilización definitiva / Menstrual pattern and ovarian reserve in patients undergoing to salpingectomy and tubal occlusion for definitive sterilization

Resumen Objetivo: Evaluar el patrón menstrual y la reserva ovárica mediante la determinación de FSH y conteo de folículos antrales en pacientes con salpingectomía y oclusión tubárica bilateral como métodos de esterilización definitiva. Material y métodos: Estudio prospectivo, longitudinal, comparativo, experimental, con asignación al azar, ciego simple, al que se incluyeron pacientes con deseos de esterilización definitiva como método anticonceptivo. Las pacientes se asignaron al azar a dos grupos, el primero con oclusión tubárica bilateral y el segundo con salpingectomía. A los seis meses posprocedimiento se evaluaron en forma ciega el patrón menstrual y la determinación sérica de hormona folículo estimulante (FSH) y el recuento de folículos antrales por ultrasonido transvaginal como marcadores de reserva ovárica. El análisis estadístico se llevó a cabo con t de Student para muestras independientes (comparación entre los grupos) y dependientes (comparación intragrupo) para comparación de medias y la prueba x2 para comparación de proporciones. Resultados: Se estudiaron 60 pacientes, 31 con oclusión tubárica bilateral y 29 con salpingectomía. Se registraron aumentos significativos en los días de sangrado menstrual con respecto a la basal después de la oclusión tubaria bilateral (p = .002) y salpingectomía (p = .008). No hubo diferencias entre oclusión tubárica bilateral y salpingectomía con respecto al tiempo quirúrgico para llevar a cabo la técnica de esterilización (p = .83), duración del ciclo menstrual (p = .35), duración de los días de sangrado menstrual (p = .40). Tampoco resultaron diferencias en las concentraciones séricas de FSH (p = 0.75) ni en el recuento de folículos antrales (p = .44) entre los grupos. Conclusiones: El patrón menstrual y la reserva ovárica son muy similares en pacientes con oclusión tubárica bilateral o salpingectomía. Ambas técnicas incrementan la duración del sangrado menstrual posterior al procedimiento. La salpingectomía implica un aumento ligero en el tiempo quirúrgico, sin diferencias en la frecuencia de complicaciones.

Abstract Objective: To evaluate the menstrual pattern and ovarian reserve in patients undergoing salpingectomy and bilateral tubal occlusion as definitive sterilization methods. Material and methods: A prospective, longitudinal, comparative, experimental, randomized, single blind study was carried out in patients with a desire for definitive sterilization as a contraceptive method. Patients were randomly assigned to perform bilateral tubal occlusion or salpingectomy. Six months after the procedure in each patient, the menstrual pattern and the serum determination of follicle stimulating hormone (FSH) and the antral follicle count were evaluated by transvaginal ultrasound as markers of ovarian reserve. The statistical analysis was carried out using the student's t-test for independent samples (comparison between groups) and dependent samples (intra-group comparison) for comparison of means and the x2 test for comparison of proportions. Results: Sixty patients were studied, 31 with bilateral tubal occlusion and 29 with salpingectomy. Significant increases were observed in the days of menstrual bleeding with respect to the baseline after bilateral tubal occlusion (p = .002) and salpingectomy (p = .008). No differences were observed between bilateral tubal occlusion and salpingectomy with respect to the surgical time to carry out the sterilization technique (p = .83), menstrual cycle duration (p = .35), duration of the days of menstrual bleeding (p = .40). No differences were observed in the serum levels of FSH (p = .75) nor in the antral follicle count (p = .44) between the groups. Conclusions: The menstrual pattern and the ovarian reserve are very similar in patients who undergo bilateral tubal occlusion and salpingectomy, although the two techniques increase the duration of menstrual bleeding after the procedure.

Critérios para avaliação de novas tecnologias para esterilização / Criteria for evaluation of new sterilization technologies / Criterios para evaluación de nuevas tecnologías para esterilización

Objetivo: Discorrer sobre critérios e métodos que devem nortear a avaliação de novas tecnologias para esterilização. Método: Estudo de revisão narrativa mediado pela busca e interpretação da legislação nacional relacionada aos processos de esterilização, normas técnicas e documentos que embasam os aspectos construtivos, funcionais e da segurança das tecnologias para esterilização. Resultados: Foram discutidos tópicos relevantes à segurança dos processos de esterilização, como a prova de esterilidade, simulação do ciclo nas piores condições de carga, compatibilidade com sistemas de barreira estéril, testes de biocompatibilidade, controle de processos e avaliação econômica. Conclusão: Os resultados beneficiarão diretamente três segmentos principais; os fabricantes, no desenvolvimento e na solicitação de registro de novas tecnologias para esterilização; a Agência Nacional de Vigilância Sanitária, na adoção oficial de uma lista de exigências junto ao fabricante no momento de petição de registro de novos equipamentos; e os serviços de saúde, no consumo de novas tecnologias para esterilização.

Objective: To discuss criteria and methods that should ideally guide the evaluation of new sterilizing technologies. Method: Narrative review by means of search and interpretation of national legislation related to sterilization processes, as well as technical standards and documents that support constructive, functional, and safety aspects of sterilization technologies. Results: Topics relevant to the safety of sterilization processes, such as sterility testing, simulation of cycle under the worst load conditions, compatibility with sterile barrier systems, biocompatibility tests, process control, and economic evaluation, were discussed. Conclusion: The results will directly benefit three major segments: manufacturers while developing and requesting registration of new technologies; The National Sanitary Surveillance Agency when officially adopting a list of requirements with the manufacturer at the time of new equipment registration request; And health services, which will consume these new sterilization technologies.

Objetivo: Discurrir sobre criterios y métodos que deben guiar la evaluación de nuevas tecnologías para esterilización. Método: Estudio de revisión narrativa mediado por la búsqueda e interpretación de la legislación nacional relacionada a los procesos de esterilización, normas técnicas y documentos que basan los aspectos constructivos, funcionales y de la seguridad de las tecnologías para esterilización. Resultados: Fueron discutidos tópicos relevantes a la seguridad de los procesos de esterilización, como la prueba de esterilidad, simulación del ciclo en las peores condiciones de carga, compatibilidad con sistemas de barrera estéril, pruebas de bio-compatibilidad, control de procesos y evaluación económica. Conclusión: Los resultados beneficiarán directamente tres segmentos principales; los fabricantes, en el desarrollo y en la solicitud de registro de nuevas tecnologías para esterilización; la Agencia Nacional de Vigilancia Sanitaria, en la adopción oficial de una lista de exigencias junto al fabricante al momento de petición de registro de nuevos equipos; y los servicios de salud, en el consumo de nuevas tecnologías para esterilización.

Process of instrument sterilization in shops with manicure and pedicure services / Processo de Esterilização de instrumentais em estabelecimentos comerciais com serviços de manicures e pedicuros

OBJECTIVE: Understanding the sterilization process of critical items used in commercial establishments that offer the services of manicures and pedicure to the public. METHODS: Cross-sectional study with 90 employees exercising the function of manicure and pedicure in commercial establishments. The research instrument was a questionnaire with open and closed questions about the knowledge and procedures related to disinfection and sterilization of instruments. RESULTS: The mean age was 33.8 years, 72 % had taken vocational courses and had professional experience of more than five years. The use of hot air oven was prevalent in 84.3 % of establishments and 65.7 % reported opening the oven during sterilization. The relation between the higher cost of the service and the use of autoclave was statistically significant (p < 0.001). CONCLUSION: The sterilization process of the instruments used in the studied commercial establishments that offer services of manicures and pedicure to the public have significant deficiencies related to cleaning and sterilization of instruments. .

OBJETIVO: Conhecer o processo de esterilização de artigos críticos utilizado em estabelecimentos comerciais que oferecem ao público os serviços de manicures e pedicuros. MÉTODOS: Estudo transversal que incluiu 90 funcionários de estabelecimentos comerciais que exerciam a função de manicure e pedicuro. O instrumento de pesquisa foi um questionário com perguntas abertas e fechadas sobre os conhecimento e procedimentos relacionados a desinfecção e esterilização dos instrumentais. RESULTADOS: A idade média foi de 33,8 anos, 72% havia realizado curso profissionalizante e tem experiência profissional há mais de cinco anos. O predomínio do uso de estufa ocorreu em 84,3% sendo que 65,7% referiram abrir a estufa durante a esterilização. A relação entre o custo maior do procedimento com uso de autoclave apresentou significância estatística (p<0,001). CONCLUSÃO: O processo de esterilização de instrumentais utilizados nos estabelecimentos comerciais que oferecem ao público os serviços de manicures e pedicuros estudados têm deficiências importantes relacionadas à limpeza e a esterilização dos instrumentais. .

Sterilization of single-use helical stone baskets: an experimental study / Esterilização de cestas helicoidais descartáveis extratoras de cálculo: um estudo experimental

Objectives: To experimentally evaluate the efficacy of a standard sterilization protocol employed during reuse of disposable helical stone baskets. Methods: Study performed on 20 helical stone baskets: 10 were used in the initial validation process, contaminated with Escherichia coli ATCC 25922 and imprinted on Müeller-Hinton media; 10 catheters were contaminated with Geobacillus stearothermophilus ATCC 7953, processed, inoculated in TSB and incubated in a water bath at a temperature of 55ºC. Bacterial growth was evaluated after 1, 3, 5 and 7 days. After sterilization, stone baskets were also opened and closed 40 times to check for functional problems. All plastic and basket parts were carefully checked for damages. Results: After the 72-hour incubation period, there was growth of E. coli ATCC 25922 in 100% of imprints. After the sterilization process and up to 7 days incubation period on a blood agar plate, there was no growth of G. stearothermophilus ATCC 7953 or any other bacteria. There were no functional problems or damage to baskets after the sterilization process. Conclusion: The ethylene oxide system is efficacious and safe for sterilization of disposable helical stone baskets. However, further clinical studies are required and should provide more safety information.

Objetivo: Avaliar experimentalmente a eficácia de um protocolo padrão de esterilização de cestas helicoidais descartáveis extratoras de cálculo. Métodos: Estudo realizado com 20 cestas helicoidais descartáveis extratoras de cálculo: 10 foram utilizadas no processo inicial de validação do método, contaminadas com Escherichia coli ATCC 25922 e semeadas em meio de Müeller-Hinton; 10 foram contaminadas com Geobacillus stearothermophilus ATCC 7953, processadas, inoculadas em TSB e incubadas em banho maria, a 55 ºC. O crescimento bacteriano foi avaliado depois de 1, 3, 5 e 7 dias. Após a esterilização, as cestas helicoidais descartáveis extratoras de cálculo foram abertas e fechadas 40 vezes para avaliar problemas funcionais. Todas as partes plásticas foram avaliadas quanto a danos. Resultados: Após as 72 horas de incubação, observou-se crescimento de E. coli ATCC 25922 em todos os meios. Após a esterilização e até 7 dias de incubação, não houve crescimento de G. stearothermophilus ATCC 7953 ou de qualquer outra bactéria. Não foram observados problemas funcionais ou danos nas cestas após a esterilização. Conclusão: O processo de esterilização com óxido de etileno é seguro e eficaz para re-esterilizar cestas helicoidais descartáveis extratoras de cálculo descartáveis. Contudo, são necessários mais estudos clínicos para fornecer mais informações sobre segurança.

Evaluation of the biocompatibility of acellular nerve scaffold via three sterilization methods / 实用口腔医学杂志

Objective: To observe the biocompatibility of acellular nerve scaffold (ANS) via three sterilization methods, to provide experimental data for tissue engineering industrialization. Methods: Pig sciatic nerves were cut and treated using the NaOH maceration method. ANSs were sterilized by ethylene oxide, ~(60)Co-irradiation and peracetic acid. Evaluated the biocompatibility by MTT, cellular compatibility test, collagenase susceptibility test in vitro and local implantation test. Results: ANS retained the integrity of structure and major components of the basement membrane. The result of MTT test showed that the ANSs via different sterilization methods had statistical differences. There were no overall significant differences in Collagenase susceptibility test. Scanning electron microscope results showed the skin fibroblasts could attach, proliferate and grow well on the surface and holes of ANS with sterilization of PAA and Co~(60),a small quantity of cells adhered on ANS with sterilization of ETO. Tests for local effects after implantation show that different sterilization methods don't effect the ability of ANS to resist the enzyme degradation. In ETO group, rats showed an acute inflammatory response followed by chronic inflammation. In PAA and ~(60)Co group rats showed an acute inflammatory response that diminished such that the graft ultimately became indistinguishable from native tissue, observations that were consistent with graft acceptance. Conclusion: Peracetic acid sterilization offers a convenient alternative protocol for ANS processing. ANS sterilized with PAA shows good compatibility and biologic safety. It is an ideal sterilization method for ANS.

Low Temperature Plasma Sterilizer for Ophthalmic Surgical Instruments Sterilization / 中华医院感染学杂志

OBJECTIVE According to the characteristics of ophthalmic surgical instruments,to select the best sterilization method in order to guide clinic.METHODS The different methods of disinfection and sterilization,surgical volume and postoperative infection of ophthalmic surgical instruments from 2005 to 2007 were reiewed and compared the current pros and cons of various sterilization methods.RESULTS The use of low-temperature sterilizer before(2005) the number of surgical cases of 2275 cases,the infection rate was 0.04%;the use of low temperature plasma sterilizer after the(2006) the number of surgical cases of 2752 cases,the infection rate was 0;the use of low-temperature plasma and low-temperature steam formaldehyde sterilization sterilization(2007) Example surgery for 2830 cases,the infection rate was 0.035 percent;low-temperature sterilization of surgical instruments can ensure sterilization,but also enhance the volume of surgery.CONCLUSIONS Hydrogen peroxide plasma sterilization technology with the use of low-temperature range,fast,convenient and reliable features,more suitable for ophthalmic surgical instruments after the section of the sterilizer.