Examinando por Materia "Dilution"

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Acceso abierto
Corrosion of surgical instruments due to the use of common water vs distilled water
(Universidad Privada Norbert Wiener, 1905-07-09) Castillo Sánchez, Rosa María; Gómez Gonzales, Walter Edgar
Objective: Determine if the corrosion of surgical instruments is produced by the use of common water vs. distilled water. Materials and Methods: Systematic Reviews are an observational and retrospective research design, which synthesizes the results of multiple primary investigations. They are an essential part of evidence-based nursing due to their rigorous methodology, identifying relevant studies to answer specific questions of clinical practice. Results: In the final selection, 13 articles were chosen, we found that 31% (4) correspond to Spain, 14% (2) correspond to Colombia and Chile, with 7% (1) Cuba, Mexico, Peru were found. , Venezuela and Brazil respectively. 69% were experimental studies from the countries of Spain, Peru, Mexico, Colombia, Venezuela and Chile. With 31% we have cross-sectional studies belonging to Brazil, Chile, Spain, and Cuba. Of the total number of articles analyzed, 80% concluded that plain water causes corrosion in surgical instruments. It was evident in the reviewed research that stainless steel instruments should not be subjected to cleaning, disinfection and sterilization processes, whose dilution component is common water, nor should they be immersed in a physiological salt solution. Prolonged contact and immersion in the solution causes corrosion pitting and forms stress corrosion cracking. Conclusion: It is recommended to use distilled water to avoid corrosion of surgical instruments, especially for final rinsing, after cleaning and disinfection.
Acceso abierto
Enzymatic effect of detergents diluted with tap water vs soft water in cleaning instruments
(Universidad Privada Norbert Wiener, 1905-07-09) Reisman Remuzgo, Delicia Mercedes; Gómez Gonzales, Walter Edgar
Objective: Establish the enzymatic effect of detergent dilutions: Soft water vs tap water in cleaning hospital instruments. Material and methods: Observational and retrospective systematic review, the search has been restricted to full-text articles, the selected articles were subjected to a critical reading, using Jover's evaluation to identify their degree of evidence. Results: In the final selection, 08 articles were chosen, we found that 60% correspond to Brazil, with 20% we find Cuba, and finally with 10% Mexico and Venezuela respectively. The investigations were experimental and a corresponding systematic review. 62.5% of scientific production comes from Brazil, while Mexico, Cuba and Venezuela constitute 12.5% each. Of the total number of articles analyzed, 30% affirm that the conditions and quality of water are important for adequate cleaning processes and other procedures related to health, 30% are related to the properties, characteristics and conditions in which enzymes exert adequate performance. Finally, 40% were related to the processes and interventions that revolve around the use of enzymatic detergents. Conclusions: The use of soft water in the dilution of the enzymatic detergent maintains the properties and chemical activity of the enzymes efficiently, allowing their action against organic matter.
Acceso abierto
Validación del ensayo microbiológico de una solución de Amonio Cuaternario al 0,25% para limpieza de superficies, basado en la Farmacopea Americana vigente. Lima 2023
(Universidad Privada Norbert Wiener, 2024-07-09) Reyes Villalobos, Daniel Rafael; Collanque Pinto, Jesús Daniel
La presente investigación tuvo como Objetivo: Validar la Técnica analítica de Recuento Microbiano, mediante la dilución - neutralización del Amonio Cuaternario al 0,25 %, utilizando como Método de vertido en placa para la recuperación de microorganismos de prueba, para el desarrollo de los parámetros estadísticos se utilizó los Softwares SPSS y Minitab. Los Resultados obtuvieron recuentos menores a 100 UFC para las Cepas Pseudomonas aeruginosa ATCC 9027 Staphylococcus aureus ATCC 6538, Bacillus Subtilis ATCC 6633, Candida albicans ATCC 10231 y Aspergillus brasiliensis ATCC 16404, la prueba de Aptitud recuperó todos los microorganismos de prueba en la dilución 10-2 y presentó crecimiento e identificación de microorganismos específicos. La Validación del método de neutralización evidenció eficacia adecuada del neutralizante en la dilución 10-2 y a su vez se demuestra la ausencia de toxicidad del neutralizante. La Exactitud de los porcentajes de recuperación se encuentran dentro del intervalo de confianza del 90%, la Precisión del ensayo se encuentra < 15 % del coeficiente de variación, a su vez se demuestra que los neutralizantes utilizados son específicos para inhibir las propiedades antimicrobianas del Amonio Cuaternario. El Límite de detección recuperó Pseudomonas aeruginosa > 11 UFC y Staphylococcus aureus > 17 UFC la robustez demuestra que no existe variabilidad significativa en los recuentos, en distintos tiempos de incubación Concluyendo que el método de dilución – Neutralización con Lecitina de soya 0,5% y Polisorbato 80 4%, permitió la recuperación de los microorganismos de prueba en la dilución 10-2.