摘要目的:探讨肠镜检查前以视频宣教方式指导藏族患者进行肠道准备对息肉检出率（polyp detection rate，PDR）的影响。方法:采用前瞻性单盲随机对照研究设计，连续纳入2024年3月1日至7月31日在青海省玉树藏族自治州人民医院接受结肠镜检查的受试者。采用随机数字表法将受试者分为视频组和文字组，纳入视频组的受试者通过观看藏语动画来获取肠道准备方法，纳入文字组的受试者通过阅读藏语告知书的方式获取肠道准备方法。比较两组的渥太华评分和PDR。采用单因素logistic回归分析研究宣教方式和息肉检出率的关系，并在logistic多因素回归分析中调整协变量建立3个模型，确定结果的稳定性。结果:共纳入149例受试者，其中视频组70例，文字组79例。视频组和文字组的渥太华评分差异无统计学意义［（5.5±0.9）分比（5.4±0.7）分， t=0.38， P=0.539］，视频组PDR高于文字组［14.3%（10/70）比1.3%（1/79）］，两组差异有统计学意义（ t=9.20， P=0.002）。logistic单因素分析提示使用视频宣教有助于发现结肠息肉（ OR=13.00，95% CI：1.62~104.37， P=0.016）。logistic多因素分析调整不同协变量后，3个模型的结果仍显示使用视频宣教有助于发现结肠息肉（ P<0.05）。 结论:在藏族患者中，使用视频宣教有助于发现结肠息肉。

abstractsObjective:To evaluate the effect of video instruction for bowel preparation before colonoscopy on the polyp detection rate (PDR) in the Tibetan patients.Methods:In this prospective, single-blind, randomized controlled trial, consecutive patients scheduled for colonoscopy in Yushu Tibetan Autonomous Prefecture People's Hospital, Qinghai Province (March 1 - July 31, 2024) were enrolled and randomly assigned to either the video group or the text group using a random number table. The video group received bowel preparation guidance via an animated video in the Tibetan language, while the text group received standard written instructions in the same language. The Ottawa bowel preparation scale (OBPS) scores and PDR were compared between the two groups. Univariate logistic regression analysis was performed to explore the relationship between the instructional method and PDR. The stability of the results was assessed in 3 models adjusting covariates in multivariate logistic regression.Results:Among 149 participants (video group: n=70; text group: n=79), there was no significant difference in OBPS scores between the groups (5.5±0.9 scores VS 5.4±0.7 scores, t=0.38, P=0.539). PDR was significantly higher in the video group [14.3% (10/70)] compared with the text group [1.3% (1/79)], with significant difference ( t=9.20, P=0.002). Univariate logistic regression analysis revealed that video instruction was associated with a significantly increased likelihood of detecting colonic polyps ( OR=13.00, 95% CI:1.62-104.37, P=0.016). After adjusting for different covariates in the logistic multivariate analysis, the results of the 3 models indicated that video instruction still contributed to the detection of colon polyps ( P<0.05). Conclusion:In the Tibetan patients, video instruction for bowel preparation is associated with a higher PDR before colonoscopy.