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首页> 外文期刊>Antimicrobial Resistance and Infection Control >How long is enough? Identification of product dry-time as a primary driver of alcohol-based hand rub efficacy
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How long is enough? Identification of product dry-time as a primary driver of alcohol-based hand rub efficacy

机译:足够多长时间?确定产品干燥时间是酒精类搓手功效的主要驱动力

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The World Health Organization has called for the development of improved methodologies to evaluate alcohol-based handrub (ABHR) efficacy, including evaluation at “short application times and volumes that reflect actual use in healthcare facilities”. The objective of this study was to investigate variables influencing ABHR efficacy, under test conditions reflective of clinical use. The test product (60% V/V 2-propanol) was evaluated according to a modified EN 1500 methodology, where application volumes of 1?mL, 2?mL, and 3?mL were rubbed until dry. Statistical analyses were performed to investigate the relative influences of product volume, hand size, and product dry-time on efficacy, and hand size and hand contamination on product dry-time. Mean log10 reduction factors (SD) were 1.99 (0.66), 2.96 (0.84) and 3.28 (0.96); and mean dry-times (SD) were 24?s (7?s), 50?s (14?s), and 67?s (20?s) at application volumes of 1?mL, 2?mL, and 3?mL, respectively (p?≤?0.030). When data were examined at the individual volunteer level, there was a statistically significant correlation between dry-time and log reduction factor (p?
机译:世界卫生组织已呼吁开发改进的方法来评估酒精基手搓(ABHR)的功效,包括在“较短的施用时间和数量以反映在医疗设施中的实际使用情况”下进行评估。这项研究的目的是在反映临床用途的测试条件下研究影响ABHR疗效的变量。根据改进的EN 1500方法对测试产品(60%V / V 2-丙醇)进行评估,将1?mL,2?mL和3?mL的应用体积擦干。进行统计分析以调查产品体积,手的大小和产品干燥时间对功效的相对影响,以及手的大小和手污染对产品干燥时间的相对影响。平均log10降低因子(SD)为1.99(0.66),2.96(0.84)和3.28(0.96);在1?mL,2?mL和3的施药量下,平均干燥时间(SD)为24?s(7?s),50?s(14?s)和67?s(20?s)。分别为ΔmL(p≤≤0.030)。在志愿者个人水平上检查数据时,干燥时间与对数减少因子之间存在统计学上的显着相关性(p≤<0.0001),而与申请量无关。手的表面积和干燥时间之间也有统计学上的显着相关性(p≥0.047),而手的表面积与功效之间无相关性(p≥0.698)。当保持其他变量(例如酒精类型和浓度)恒定时,产品干燥时间似乎是ABHR功效的主要驱动因素,这表明应为每个人量身定制剂量,并着重于实现具有足够功效的产品干燥时间。

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