研究医疗保健相关病原体的表面积和恢复效率,以优化复合环境采样
Monica Y Chan-Riley1,2, Jonathan R Edwards2, Judith Noble-Wang2
1Department of Energy, Oak Ridge institute for Science and Education (ORISE), Oakridge, Tennessee, United States of America.
PloS one
|November 8, 2024
概括
使用复合纤维素海绵方法优化针对抗微生物耐药生物体 (ARO) 的医院表面采样,提高了病原体检测. 保守的复合策略可以提高各种ARO的康复率,有助于感染控制.
科学领域:
- 环境微生物学和医院感染控制.
- 抗微生物耐药性监测和检测方法.
背景情况:
- 医院表面是医疗保健相关的抗微生物病原体的储存库.
- 寻找抗微生物耐药生物体 (ARO) 的传统环境采样是劳动密集且昂贵的.
- 复合采样方法有可能减少时间和费用.
研究的目的:
- 用纤维素海绵调查采样ARO的最佳表面积.
- 为了比较理论复合 (TC) 采样与疾病控制和预防中心 (CDC) 标准全工具 (WT) 方法的有效性.
- 为未知的目标生物体制定保守的复合采样策略.
主要方法:
- 评估了五种ARO:KPC+ Klebsiella pneumoniae (KPC),Acinetobacter baumannii (AB),耐甲基金色葡萄球菌 (MRSA),耐万科胺菌的菌 (Enterococcus faecalis) 和Clostridioides difficile子 (CD).
- 不同表面积 (3232,258厘米) 的无钢券,经过干燥,并使用纤维素海绵取样.
- 创建基于最佳面积的理论复合 (TC) 并将回收率与标准WT方法进行比较.
主要成果:
- 最佳的复合面积因生物体而异,范围从1,290平方厘米 (MRSA,VRE) 到3,870平方厘米 (KPC).
- 与多个WT采样相比,复合采样为MRSA,VRE和AB产生了较大或可比的殖民地形成单位 (CFU).
- 一个保守的复合策略 (共1290平方米) 改善了KPC的恢复,并保持了其他ARO的高恢复.
结论:
- 复合采样策略可以针对特定的ARO进行优化,以提高回收率.
- 保守的复合采样方法提供了一种可行,高效的方法,用于检测医院表面上广泛的ARO.
- 这种方法有可能通过更有效地识别AROs的环境储库来改善感染控制.
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