Leonas K K, Jinkins R S
University of Georgia, Athens.
Am J Infect Control. 1997 Feb;25(1):16-23. doi: 10.1016/s0196-6553(97)90048-1.
Relationships between selected fabric characteristics and the barrier effectiveness of surgical gown fabrics to liquid strike-through and bacterial transmission were examined.
Eight commercially available surgical gowns were evaluated in this study. Five of the gowns were disposable and were produced from nonwoven fabrics. Three of the gowns were reusable and were produced from woven fabrics. Standard test methods were used to evaluate the fabrics. Fabric characteristics evaluated included thickness, weight, pore size, and oil and water repellency. Yarn count was determined for the woven fabrics to establish the number of yarns per inch in both the warp (lengthwise) and fill (crosswise) fabric direction. Resistance of the fabrics to the penetration of microorganism suspensions under a hydrostatic pressure was determined. Microorganisms used in this study were ESCHERICHIA COLI AND STAPHYLOCOCCUS AUREUS: Scanning electron micrographs are presented to illustrate differences among fabrics.
Results of this study showed that fabric characteristics of construction, repellency, and pore size contributed to gown performance. Liquid strike-through was not always accompanied by bacterial transmission.
Higher fabric repellency ratings and smaller pore size generally corresponded with higher barrier properties.
研究了选定的织物特性与手术衣织物对液体渗透和细菌传播的阻隔效果之间的关系。
本研究评估了八种市售手术衣。其中五件为一次性手术衣，由无纺布制成。三件为可重复使用的手术衣，由机织织物制成。采用标准测试方法对织物进行评估。评估的织物特性包括厚度、重量、孔径以及拒油拒水性。测定了机织织物的纱线支数，以确定织物在经向（纵向）和纬向（横向）每英寸的纱线数量。测定了织物在静水压力下对微生物悬浮液渗透的抗性。本研究中使用的微生物为大肠杆菌和金黄色葡萄球菌：提供扫描电子显微镜照片以说明织物之间的差异。
本研究结果表明，织物的结构、拒水性和孔径特性有助于手术衣的性能。液体渗透并不总是伴随着细菌传播。
较高的织物拒水等级和较小的孔径通常对应较高的阻隔性能。
