Ofstead Cori L, Hopkins Krystina M, Quick Mariah R, Brooks Karen B, Eiland John E, Wetzler Harry P
AORN J. 2019 Jun;109(6):757-771. doi: 10.1002/aorn.12699.
Flexible endoscopes are exposed to blood, mucus, and other secretions during procedures. Single-use sheaths are designed to prevent contact between contaminants and reusable endoscope components. This systematic review examined findings from 22 studies that assessed endoscopic sheath use during urologic, gastrointestinal, or respiratory procedures. The evidence showed that sheaths were durable and yielded faster endoscope turnover times because their reusable components did not require high-level disinfection or sterilization. After a brief learning period, health care providers successfully assembled and maneuvered sheathed endoscopes. Patients generally did not experience greater discomfort during procedures in which sheaths were used. Microbial cultures of sheathed endoscopes were negative or similar to unsheathed endoscopes. More research is needed to evaluate the potential effect of disposable sheaths on infection risks. The evidence suggests that sheaths are a viable option for reliably providing a barrier between endoscopes and patients without affecting the quality of endoscopic procedures.
在操作过程中，软性内窥镜会接触到血液、黏液和其他分泌物。一次性护套旨在防止污染物与可重复使用的内窥镜部件接触。本系统评价审查了22项研究的结果，这些研究评估了泌尿科、胃肠道或呼吸道手术中内窥镜护套的使用情况。证据表明，护套耐用，且能使内窥镜周转时间更快，因为其可重复使用部件无需进行高水平消毒或灭菌。经过短暂的学习期后，医护人员成功组装并操作了带护套的内窥镜。在使用护套的手术过程中，患者通常不会感到更大的不适。带护套内窥镜的微生物培养结果为阴性或与无护套内窥镜相似。需要更多研究来评估一次性护套对感染风险的潜在影响。证据表明，护套是在内窥镜与患者之间可靠提供屏障且不影响内窥镜检查质量的可行选择。
