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Chinese Journal of Gastrointestinal Endoscopy(Electronic Edition) ›› 2022, Vol. 09 ›› Issue (01): 30-35. doi: 10.3877/cma.j.issn.2095-7157.2022.01.018

• Original Article • Previous Articles     Next Articles

Study on the related factors of insertion difficulty during colonoscopy

Dong Yang1, Ke Tao1, Meng Li2, Yan Xia1, Tingting Cao1, Ruihong Zhao1, Jianguang Zhang1, Hong Xu1,()   

  1. 1. Department of Gastroenterology
    2. Department of Gastrointestinal and Anal Surgery, The First Hospital of Jilin University, Changchun 130021, China
  • Received:2021-11-22 Online:2022-02-15 Published:2022-04-02
  • Contact: Hong Xu

Abstract:

Objective

To guide the pre evaluation of the difficulty and preparation before the examination of colonoscopy by analyzing the large number of cases.

Methods

A total of 586 cases of unsedated colonoscopy in the endoscopy center of the First Hospital of Jilin University from April 2019 to April 2020 were retrospectively analyzed. According to the evaluation results of the difficulty of colonoscopic insertion, They were divided into easy group (group E) and difficult group (group D). The nomogram model for difficulty of colonoscopic insertion was constructed.

Results

Compared with the group D, the group E had shorter insertion time (10 vs 15 min, P< 0.001), the proportion of cases requiring additional water to lubricate the lumen was lower (27.7% vs 92.7%, P< 0.001), and the proportion of cecal intubation was higher (100 % vs 96.3%, P<0.001). The VAS score of group E was lower than that of group D (4 vs 5, P< 0.001). The independent risk factors were constipation, low BMI, the use of oral sodium phosphate solution, and history of abdominal surgery (P< 0.05). The nomogram model was constructed to predict the difficulty of colonoscopy, based on these independent risk factors.

Conclusion

The score for difficulty of colonoscopic insertion can be estimated by scoring all independent risk factors, so as to guide preparations for the examination of colonoscopy.

Key words: Colonoscopy, Insertion difficulty, Risk factors, Prediction model

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