An endoscopic training model to improve accuracy of colonic polyp size measurement

Chang, Chi‐Yang; Chiu, Han–Mo; Wang, Hsiu-Po; Lee, Ching‐Tai; Tai, John Jen; Tu, Chia‐Hung; Tai, Chi‐Ming; Chiang, Tung‐Liang; Huang, Jason Kunming; Chang, Daw-Yuan; Lin, Jaw–Town

doi:10.1007/s00384-010-0878-9

Cited by 15 publications

(10 citation statements)

References 37 publications

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“…A previous study at a single center also verified the usefulness of an educational module with video clips of polyp size estimations with and without a flexible measuring probe 12. However, interest in polyp size estimation, which may influence the motivation of the participants to learn, may already be higher in that institution owing to the presence of specialists who may have emphasized on the need for accurate polyp size estimation.…”

Section: Discussionmentioning

confidence: 86%

“…It has been shown that beginner endoscopists are less accurate in the visual estimation of polyp size than expert endoscopists 12,13. As even the size estimation by experts who educate beginners is inaccurate,4,5,6,14 an educational tool that allows accurate visual estimation of polyp size without relying on endoscopic equipment is required.…”

Section: Introductionmentioning

confidence: 99%

“…As even the size estimation by experts who educate beginners is inaccurate,4,5,6,14 an educational tool that allows accurate visual estimation of polyp size without relying on endoscopic equipment is required. A prospective study showed that a lecture involving videos was a useful strategy in improving the accuracy of size estimation without using tools 12. However, this study was performed at a single center with few participants.…”

Section: Introductionmentioning

confidence: 99%

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Short educational video to improve the accuracy of colorectal polyp size estimation: Multicenter prospective study

Utsumi¹,

Horimatsu

Nishikawa

et al. 2020

Digestive Endoscopy

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Background and Aim Accurate polyp size estimation is necessary for appropriate management of colorectal polyps. Polyp size is often determined by subjective visual estimation in clinical situations; however, it is inaccurate, especially for beginner endoscopists. We aimed to clarify the usefulness of our short training video, available on the Internet, for accurate polyp size estimation. Methods We conducted a multicenter prospective controlled study in Japan. After completing a pretest composed of near and far images of 30 polyps, participants received the educational video lecture (<10 min long). The educational content included the knowledge of strategies based on polyp size and criteria for size estimation including the endoscopic equipment size and videos of polyps in vivo. After one month, the participants undertook a posttest. The primary outcome was a change in the accuracy of polyp size visual estimation between the pretest and posttest in beginners. Results Participants including 111 beginners, 52 intermediates, and 97 experts from 51 institutions completed both tests. Accuracy of polyp size estimation in the beginners showed a significant increase after the video lecture [54.1% (51.3–57.0%) to 59.0% (56.5–61.5%), P = 0.003]. Multivariable logistic regression analysis showed that the category of beginners and a low score on pretest (P = 0.020 and <0.001, respectively) were the factors that contributed to an increase of ≥10% in the accuracy. Conclusion Our educational video led to an improvement in polyp size estimation in beginners. Furthermore, this video may be useful for non‐beginners with insufficient polyp size estimation accuracy.

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Section: Discussionmentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Short educational video to improve the accuracy of colorectal polyp size estimation: Multicenter prospective study

Utsumi¹,

Horimatsu

Nishikawa

et al. 2020

Digestive Endoscopy

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“…Some studies have demonstrated that repeated polyp size measurement using tools is helpful in training for accurate visual measurements [ 24 , 25 ]. Therefore, we believe that the gCAP method may be useful in the training of beginner endoscopists for improved VE ability.…”

Section: Discussionmentioning

confidence: 99%

Usefulness of a Colonoscopy Cap with an External Grid for the Measurement of Small-Sized Colorectal Polyps: A Prospective Randomized Trial

Han

Kim

et al. 2021

JCM

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Accurate measurement of polyp size during colonoscopy is crucial. The usefulness of cap-assisted colonoscopy and external grid application on monitor (gCAP) was evaluated for polyp size measurement in this 3-year, single-center, single-blind, randomized trial. Using the endoscopic forceps width as reference, the discrepancy percent (DP), error rate (ER), and measurement time were compared between gCAP and visual estimation (VE) after randomization. ER was calculated within a 20% and 33% limit. From the 111 patients, 280 polyps were measured. The mean polyp sizes were 4.0 ± 1.7 mm and 4.2 ± 1.8 mm with gCAP and VE, respectively (p = 0.368). Compared with that by the forceps method, DP was significantly lower in the gCAP group than in the VE group. Moreover, ER was significantly lower in the gCAP group within its preset limit. The measurement time was 4 s longer in the gCAP group than in the VE group (8.2 ± 4.8 s vs. 4.2 ± 1.5 s; p < 0.001). However, the forceps method lasted 28 s longer than the others. On subgroup analysis by size, gCAP was more accurate for polyp size ≥5 mm. The gCAP method was more accurate for polyp size measurement than VE, especially for polyps ≥5 mm, and was more convenient than the forceps method.

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“…In this context, Chi Yang et al. [28] also found that the interobserver inconsistency in polyp size measurements and the difference in diagnostic classification by pathologists led to spurious differences in estimates of the prevalence of advanced adenomas.…”

Section: Discussionmentioning

confidence: 99%

The frequency of advanced adenoma in consulting patients: a nationwide survey in Iceland (2003–2006)

Rubio

Kristjansdottir²,

Thodleifsson

et al. 2012

Colorectal Disease

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An endoscopic training model to improve accuracy of colonic polyp size measurement

Abstract: This training model could help endoscopists improve the accuracy of measurement of polyps on colonoscopy in a short period. The durability of learning effect needs further investigation.

Cited by 15 publications

References 37 publications

Short educational video to improve the accuracy of colorectal polyp size estimation: Multicenter prospective study

Short educational video to improve the accuracy of colorectal polyp size estimation: Multicenter prospective study

Usefulness of a Colonoscopy Cap with an External Grid for the Measurement of Small-Sized Colorectal Polyps: A Prospective Randomized Trial

The frequency of advanced adenoma in consulting patients: a nationwide survey in Iceland (2003–2006)

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