Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, China.
Hubei Provincial Clinical Research Center for Digestive Disease Minimally Invasive Incision, Renmin Hospital of Wuhan University, Wuhan, China.
Clin Transl Gastroenterol. 2023 Mar 1;14(3):e00566. doi: 10.14309/ctg.0000000000000566.
Constructing quality indicators that reflect the defect of colonoscopy operation for quality audit and feedback is very important. Previously, we have established a real-time withdrawal speed monitoring system to control withdrawal speed below the safe speed. We aimed to explore the relationship between the proportion of overspeed frames (POF) of withdrawal and the adenoma detection rate (ADR) and to conjointly analyze the influence of POF and withdrawal time on ADR to evaluate the feasibility of POF combined with withdrawal time as a quality control indicator.
The POF was defined as the proportion of frames with instantaneous speed ≥44 in the whole colonoscopy video. First, we developed a system for the POF of withdrawal based on a perceptual hashing algorithm. Next, we retrospectively collected 1,804 colonoscopy videos to explore the relationship between POF and ADR. According to withdrawal time and POF cutoff, we conducted a complementary analysis on the effects of POF and withdrawal time on ADR.
There was an inverse correlation between the POF and ADR (Pearson correlation coefficient -0.836). When withdrawal time was >6 minutes, the ADR of the POF ≤10% was significantly higher than that of POF >10% (25.30% vs 16.50%; odds ratio 0.463, 95% confidence interval 0.296-0.724, P < 0.01). When the POF was ≤10%, the ADR of withdrawal time >6 minutes was higher than that of withdrawal time ≤6 minutes (25.30% vs 21.14%; odds ratio 0.877, 95% confidence interval 0.667-1.153, P = 0.35).
The POF was strongly correlated with ADR. The combined assessment of the POF and withdrawal time has profound significance for colonoscopy quality control.
构建反映结肠镜操作缺陷的质量指标，用于质量审核和反馈非常重要。我们之前已经建立了实时退镜速度监测系统，以控制退镜速度低于安全速度。我们旨在探讨退镜过程中过速帧数（POF）比例与腺瘤检出率（ADR）之间的关系，并联合分析 POF 和退镜时间对 ADR 的影响，以评估 POF 结合退镜时间作为质量控制指标的可行性。
POF 定义为整个结肠镜视频中瞬时速度≥44 的帧数比例。首先，我们基于感知哈希算法开发了一个用于 POF 退镜的系统。然后，我们回顾性地收集了 1804 个结肠镜视频，以探讨 POF 与 ADR 之间的关系。根据退镜时间和 POF 截止值，我们对 POF 和退镜时间对 ADR 的影响进行了互补分析。
POF 与 ADR 呈负相关（Pearson 相关系数 -0.836）。当退镜时间>6 分钟时，POF≤10%的 ADR 明显高于 POF>10%（25.30%比 16.50%；比值比 0.463，95%置信区间 0.296-0.724，P<0.01）。当 POF≤10%时，退镜时间>6 分钟的 ADR 高于退镜时间≤6 分钟（25.30%比 21.14%；比值比 0.877，95%置信区间 0.667-1.153，P=0.35）。
POF 与 ADR 密切相关。POF 和退镜时间的联合评估对结肠镜质量控制具有重要意义。
