...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Environmental Research and Public Health >Impact of a Risk Management Plan on Legionella Contamination of Dental Unit Water
【24h】

Impact of a Risk Management Plan on Legionella Contamination of Dental Unit Water

机译：风险管理计划对牙科单位水军团菌污染的影响

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The study aimed to assess the prevalence of Legionella spp. in dental unit waterlines of a dental clinic and to verify whether the microbiological parameters used as indicators of water quality were correlated with Legionella contamination. A risk management plan was subsequently implemented in the dental health care setting, in order to verify whether the adopted disinfection protocols were effective in preventing Legionella colonization. The water delivered from syringes and turbines of 63 dental units operating in a dental clinic, was monitored for counts of the heterotrophic bacteria P. aeruginosa and Legionella spp. (22 °C and 37 °C). At baseline, output water from dental units continuously treated with disinfection products was more compliant with the recommended standards than untreated and periodically treated water. However, continuous disinfection was still not able to prevent contamination by Legionella and P. aeruginosa. Legionella was isolated from 36.4%, 24.3% and 53.3% of samples from untreated, periodically and continuously treated waterlines, respectively. The standard microbiological parameters used as indicators of water quality proved to be unreliable as predictors of the presence of Legionella, whose source was identified as the tap water used to supply the dental units. The adoption of control measures, including the use of deionized water in supplying the dental unit waterlines and the application of a combined protocol of continuous and periodic disinfection, with different active products for the different devices, resulted in good control of Legionella contamination. The efficacy of the measures adopted was mainly linked to the strict adherence to the planned protocols, which placed particular stress on staff training and ongoing environmental monitoring.
机译：该研究旨在评估军团菌的患病率。并检查牙科诊所的牙科单位水线，并验证用作水质指标的微生物参数是否与军团菌污染相关。随后在牙科保健机构中实施了一项风险管理计划，以验证所采用的消毒规程是否有效地预防了军团菌定植。监测在牙科诊所工作的63个牙科诊所的注射器和涡轮提供的水中异养细菌铜绿假单胞菌和军团菌的数量。 （22°C和37°C）。在基线时，与未经处理和定期处理的水相比，连续用消毒产品处理过的牙科设备的出水更符合建议的标准。但是，连续消毒仍不能防止军团菌和铜绿假单胞菌污染。军团菌分别从未经处理，定期和连续处理的水线中分离出的36.4％，24.3％和53.3％的样品中分离出来。事实证明，用作水质指标的标准微生物学参数不能可靠地预测军团菌的存在，军团菌的来源被确定为用于提供牙科设备的自来水。采取控制措施，包括在为牙科设备供水线使用去离子水以及对不同器械使用不同活性产品的连续和定期消毒相结合的方案的应用，可以很好地控制军团菌污染。所采取措施的效力主要与严格遵守计划中的规程有关，这特别强调了人员培训和持续的环境监测。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号