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标签上的抗菌疗效与手工混合的灌溶液对S. 黄金色的生物片

Robert Falconer^1,2, Tyler Smith¹, David Rothberg¹

¹Department of Orthopaedics, University of Utah, Salt Lake City, UT, 84108, USA.

|July 21, 2025

概括

在模拟的手术感染模型中,没有经过测试的灌液有效降低了细菌生物负担. 目前的伤口灌方法,无论是商业的还是手工混合的,都未能达到有效性基准,突出需要更好的评估模型.

科学领域:

整形外科整形外科整形外科
传染性疾病传染性疾病
生物材料是一种生物材料.

背景情况:

在DAIR程序和硬件感染中,伤口灌是标准的,但对细菌减少的最佳解决方案尚不清楚.
临床医生使用商业标签上的溶液或非标签手工混合的制剂,目前的疗效测试并不反映临床环境.
肌肉骨感染是一个重大挑战,增加医疗保健成本.

研究的目的:

评估标签上商业灌解决方案是否优于标签外手工混合的解决方案,以减少细菌生物膜负担.
提出一种概念验证的ex vivo模型,用于在临床上相关的场景中评估消毒效果.

主要方法:

黄金葡萄球菌生物膜是在固定在牛大腿骨上的板上生长的.
测试了14种灌溶液 (3种商用,11种手工混合) 和一个控制液.
使用10倍稀释序列量化细菌生物负担的减少,以确定log10的减少.

主要成果:

与未经处理的对照组相比,没有商业或手工混合的测试灌溶液显示出细菌生物负担在统计学上显著减少.
没有一种治疗方法达到FDA对抗菌活性减少4log10的基准.
一种非标签手工混合的0.472%素酸盐溶液实现了最大的减少 (1.43 ± 0.20 log10),但仍然低于疗效基准.

结论:

目前标签上的灌产品在减少细菌负担方面没有明显优于标签外手工混合的溶液.
该研究强调了当前灌解决方案和临床相关的肌肉骨感染的评估方法的不足.
灌产品的抗菌疗效需要使用临床相关模型进行评估,以应对手术部位感染的挑战.

关键词:

生物膜是一种生物膜.赫西丁 (Chlorhexidine) 是一种化学物质.感染感染感染波维-是一种黄金葡萄球菌黄金葡萄球菌创伤是一个创伤.

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