在医院环境中高效消毒:一个易于操作,低成本的原型
Clarice de la Rocha1, Carolina da Silva Canielles Caprara1, Vanice Rodrigues Poester2
1Laboratório de Desenvolvimento de Novos Fármacos (LADEFA), Universidade Federal do Rio Grande-FURG, Rio Grande, Rio Grande do Sul, Brazil.
Photochemistry and photobiology
|April 4, 2024
概括
这项研究介绍了一种便携式紫外线C (UVC) 光器件,用于对抗医疗保健相关感染 (HAI). 紫外线设备有效地使细菌失活,并在医院环境中显著减少真菌生长.
科学领域:
- 微生物学 微生物学
- 传染性疾病 传染性疾病
- 生物医学工程 生物医学工程
背景情况:
- 医疗相关感染 (HAI) 是一个重要的患者安全问题.
- 目前的消毒方法可能有效性有限或有助于抗菌素耐药性.
- 在医疗保健环境中需要新的,安全和有效的净化策略.
研究的目的:
- 开发和评估一款便携式紫外线C (UVC) 光装置,用于医疗机构的消毒.
- 评估紫外线光对灭活常见的细菌和真菌病原体的有效性,这些病原体负责HAI.
- 为了确定最佳的紫外线剂量用于微生物无活化,而不会促进耐药性.
主要方法:
- 开发了一种便携式UVC (254nm) 设备.
- 设备的辐射率在3.5,5.0和60mJ/cm2的剂量下进行了测试.
- 暴露对抗了Acinetobacter baumannii,大肠杆菌, Pseudomonas aeruginosa,金黄色葡萄球菌,白菌,C. parapsilosis和阿斯伯吉洛斯部分Fumigati.
主要成果:
- 所有测试的细菌物种都被紫外线治疗无活化 (p < 0.05).
- 菌无活化在60mJ/cm2时最有效,减少了94%-100%的注射剂.
- 原型在48毫米的距离上,在160秒内达到有效的UVC剂量 (3.560mJ/cm2).
结论:
- 便携式UVC原型有效地使细菌失活,并减少真菌污染.
- 这项技术提供了一种安全有效的方法来减少医院中的微生物负载.
- 紫外线设备有可能显著降低与医疗保健相关的感染风险.
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