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1.
J Hosp Infect ; 115: 32-43, 2021 Sep.
Article in English | MEDLINE | ID: mdl-34126104

ABSTRACT

BACKGROUND: The concern with environmental security to avoid contamination of individuals was intensified with the crisis established by SARS-CoV-2. The COVID-19 pandemic has shown the necessity to create systems and devices capable of clearing the air in an environment of micro-organisms more efficiently. The development of systems that allow the removal of micro-droplets mainly originating from breathing or talking from the air was the motivation of this study. AIM: This article describes a portable and easy-to-operate system that helps to eliminate the droplets or aerosols present in the environment by circulating air through an ultraviolet-C (UV-C) reactor. METHODS: An air circulation device was developed, and a proof-of-principle study was performed using the device against bacteria in simulated and natural environments. The microbiological analysis was carried out by the simple sedimentation technique. In order to compare the experimental results and the expected results for other micro-organisms, the reduction rate values for bacteria and viruses were calculated and compared with the experimental results based on technical parameters (clean air delivery rate (CADR) and air changes per hour (ACH)). FINDINGS: Results showed that the micro-organisms were eliminated with high efficiency by the air circulation decontamination device, with reductions of 99.9% in the proof-of-principle study, and 84-97% in the hospital environments study, contributing to reducing contamination of individuals in environments considered to present risk. CONCLUSION: This study resulted in a low-cost and relatively simple device, which was shown to be effective and safe, and could be replicated, especially in low-income countries, respecting the standards for air disinfection using UV-C technologies.


Subject(s)
COVID-19 , Ultraviolet Rays , Decontamination , Disinfection , Humans , Pandemics , SARS-CoV-2
2.
Rev. Hosp. Niños B.Aires ; 27(115): 124-9, ago. 1985. ilus
Article in Spanish | BINACIS | ID: bin-33193

ABSTRACT

Desde el año 1978 los autores asistido a 18 pacientes cuyas edades oscilaron entre 3 meses y 9 años, afectados de hernia del hiatus esofágico y/o reflujo gastroesofágico, con una técnica quirúrgica que es una modificación de la de Nissen (fundoplicatura circular) para adaptarla a las condiciones fisiológicas de la infancia, sin perder la eficacia de aquella, con buenos resultados en 17 casos. Once de los niños tienen un seguimiento entre 3 y 7 años con buena evolución. Estas técnicas quirúrgicas, como la que nos ocupa, están clasificadas entre las fundoplicaturas parciales (pues no son totalmente circulares), han sido utilizadas por varios autores, entre ellas, la descripta por Lind, quientes la realizaron exclusivamente en adultos. No hemos encontrado en la bibliografía nacional o extranjera a nuestro alcance, una aplicación a pacientes pediátricos de la técnica propuesta en este artículo (AU)


Subject(s)
Infant , Child, Preschool , Child , Humans , Hernia, Hiatal/surgery , Gastroesophageal Reflux/surgery
3.
Rev. Hosp. Niños B.Aires ; 27(114): 93-9, jun. 1985. ilus, Tab
Article in Spanish | BINACIS | ID: bin-32657

ABSTRACT

Se expone una variable epidemiológica de un grupo de pacientes traumatizados por accidentes ocasionados por los ascensores. La casuística está constituida por 159 niños excluídos 2 pacientes que habían sufrido lesiones de la pierna y otro que introdujo la mano a través de las rejas metálicas del ascensor. Contribuimos al conocimiento etiológico, patogénico y terapéutico de esta entidad, así como también exaltamos la imperiosa necesidad de adoptar las medidas preventivas que el problema exige (AU)


Subject(s)
Infant , Child, Preschool , Child , Humans , Male , Female , Accidents
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