不同检测方法对软式内镜干燥效果评价的研究

Study on different test methods to evaluate the drying effect of flexible endoscope

摘要:

目的 比较氯化钴试纸与管腔检测仪在评估内镜干燥效果方面的效能，以期为临床选择合适的评估工具提供参考。方法 选取2023年11月－2024年3月该院胃镜和肠镜各10条循环实验，内镜再处理后，随机分为5个不同干燥时间组（30 s、3 min、6 min、9 min和12 min），共观察200个样本，使用氯化钴试纸和管腔检测仪评估干燥效果。结果 管腔检测仪检测胃肠镜干燥合格率高于氯化钴试纸，但氯化钴试纸在便捷性和成本效益方面明显优于管腔检测仪。管腔检测仪具有可视化功能，对残留液滴定量定位观察发现，胃肠镜干燥30 s后存在大量液滴残留，干燥3 min后液滴数量明显减少。其中，胃镜以轻度（1～5滴/条）和无（0滴/条）液滴残留为主，肠镜以中度（6～10滴/条）和轻度液滴残留为主。不同干燥时间内镜残留液滴数量比较，差异有统计学意义（P < 0.01），且定位液滴主要残留在管腔远端弯曲部和近端分叉部。结论 氯化钴试纸和管腔检测仪评价内镜干燥效果各有优势与不足，临床可结合两种方法全面评估内镜的整体干燥效果，以保障内镜再处理流程的安全性和有效性。

Abstract:

Objective To compare the effectiveness of cobalt chloride test papers and borescope in evaluating the drying of endoscopes, providing a reference for clinical selection of appropriate assessment tools.Methods 10 gastroscopes and 10 colonoscopes procedures were selected from November 2023 to March 2024 for circulation experiments. After endoscope reprocessing, they were randomly divided into five groups with different drying times (30 s, 3 min, 6 min, 9 min, and 12 min) with 200 samples. Cobalt chloride test paper and borescope were used to evaluate the drying effectiveness.Results The qualified rate of gastrointestinal endoscope by borescope was significantly higher than that by cobalt chloride test paper, but cobalt chloride test paper was obviously better than that by borescope in convenience and cost-effectiveness. The borescope had the function of visualization, and the quantitative positioning observation of residual droplets showed that there were a large number of droplets left after gastrointestinal endoscope drying for 30 s, and the number of droplets was obviously reduced after drying for 3 min. Among them, the gastroscope was mainly light (1 ~ 5 drops/strip) and none (0 drops/strip), and the colonoscope was mainly moderate (6 ~ 10 drops/strip) and light droplets. Compared with different drying times, there was a significant statistical difference in the number of residual droplets in the endoscope (P < 0.01), and the localized droplets mainly remained in the distal bending part and the proximal bifurcation part of the lumen.Conclusion Both cobalt chloride test papers and borescope are important methods for assessing endoscope drying efficacy, each with its own advantages and limitations. Clinicians can use both methods in combination to comprehensively evaluate the overall dryness of endoscopes, thereby ensuring the safety and effectiveness of the endoscope reprocessing process.