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Effects of the use of a wavy cap on the tip of the colonoscope on the training performance of novice endoscopists for colonoscopy

  • Authors:
    • Naoya Toyoshima
    • Shin-Ei Kudo
    • Yuichi Mori
    • Makoto Kutsukawa
    • Tatsuya Sakurai
    • Yuta Kouyama
    • Masashi Misawa
    • Toyoki Kudo
    • Takemasa Hayashi
    • Kunihiko Wakamura
    • Hideyuki Miyachi
    • Toshiyuki Baba
    • Fumio Ishida
  • View Affiliations / Copyright

    Affiliations: Digestive Disease Center, Showa University Northern Yokohama Hospital, Yokohama‑shi, Kanagawa 224‑8503, Japan
    Copyright: © Toyoshima et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Article Number: 8
    |
    Published online on: December 14, 2020
       https://doi.org/10.3892/wasj.2020.79
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Abstract

Trainee doctors have to perform numerous procedures to master the colonoscopy technique. The present study aimed to compare the efficacy of colonoscopy with and without the use of a wavy cap based on the total colonoscopy (TCS) rate and the insertion time achieved by the trainee. A 6‑month prospective study was conducted at Showa University Northern Yokohama Hospital between May and October, 2011. A total of 5 trainee doctors were randomly allocated to the cap group that performed colonoscopies using a wavy cap on the endoscope (n=2 trainees) or the non‑cap group that used no cap (n=3 trainees). All evaluated patients underwent initial TCS using a magnifying video colonoscope. The insertion time and TCS rate were recorded. The primary endpoint was the comparison of the caecum arrival rate between the cap and non‑cap groups following 6 months of training. In total, 276 colonoscopies using a cap and 387 colonoscopies without a cap were performed. The cecal intubation time of the cap group was significantly shorter than that of the non‑cap group (9.2 vs. 11.6 min, P<0.001). The TCS rate by the novice endoscopists in the cap group was significantly greater than that of the non‑cap group (41.7 vs. 33.8%, P=0.036). After 60 procedures, the learning curve of the cap group was significantly steeper than that of non‑cap group. On the whole, the findings of the present study suggest that the use of a wavy cap on the tip of the colonoscope is helpful for achieving a higher cecal intubation rate, a more rapid insertion time and a steep learning curve for novice endoscopists.
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Copy and paste a formatted citation
Spandidos Publications style
Toyoshima N, Kudo S, Mori Y, Kutsukawa M, Sakurai T, Kouyama Y, Misawa M, Kudo T, Hayashi T, Wakamura K, Wakamura K, et al: Effects of the use of a wavy cap on the tip of the colonoscope on the training performance of novice endoscopists for colonoscopy. World Acad Sci J 3: 8, 2021.
APA
Toyoshima, N., Kudo, S., Mori, Y., Kutsukawa, M., Sakurai, T., Kouyama, Y. ... Ishida, F. (2021). Effects of the use of a wavy cap on the tip of the colonoscope on the training performance of novice endoscopists for colonoscopy. World Academy of Sciences Journal, 3, 8. https://doi.org/10.3892/wasj.2020.79
MLA
Toyoshima, N., Kudo, S., Mori, Y., Kutsukawa, M., Sakurai, T., Kouyama, Y., Misawa, M., Kudo, T., Hayashi, T., Wakamura, K., Miyachi, H., Baba, T., Ishida, F."Effects of the use of a wavy cap on the tip of the colonoscope on the training performance of novice endoscopists for colonoscopy". World Academy of Sciences Journal 3.1 (2021): 8.
Chicago
Toyoshima, N., Kudo, S., Mori, Y., Kutsukawa, M., Sakurai, T., Kouyama, Y., Misawa, M., Kudo, T., Hayashi, T., Wakamura, K., Miyachi, H., Baba, T., Ishida, F."Effects of the use of a wavy cap on the tip of the colonoscope on the training performance of novice endoscopists for colonoscopy". World Academy of Sciences Journal 3, no. 1 (2021): 8. https://doi.org/10.3892/wasj.2020.79
Copy and paste a formatted citation
x
Spandidos Publications style
Toyoshima N, Kudo S, Mori Y, Kutsukawa M, Sakurai T, Kouyama Y, Misawa M, Kudo T, Hayashi T, Wakamura K, Wakamura K, et al: Effects of the use of a wavy cap on the tip of the colonoscope on the training performance of novice endoscopists for colonoscopy. World Acad Sci J 3: 8, 2021.
APA
Toyoshima, N., Kudo, S., Mori, Y., Kutsukawa, M., Sakurai, T., Kouyama, Y. ... Ishida, F. (2021). Effects of the use of a wavy cap on the tip of the colonoscope on the training performance of novice endoscopists for colonoscopy. World Academy of Sciences Journal, 3, 8. https://doi.org/10.3892/wasj.2020.79
MLA
Toyoshima, N., Kudo, S., Mori, Y., Kutsukawa, M., Sakurai, T., Kouyama, Y., Misawa, M., Kudo, T., Hayashi, T., Wakamura, K., Miyachi, H., Baba, T., Ishida, F."Effects of the use of a wavy cap on the tip of the colonoscope on the training performance of novice endoscopists for colonoscopy". World Academy of Sciences Journal 3.1 (2021): 8.
Chicago
Toyoshima, N., Kudo, S., Mori, Y., Kutsukawa, M., Sakurai, T., Kouyama, Y., Misawa, M., Kudo, T., Hayashi, T., Wakamura, K., Miyachi, H., Baba, T., Ishida, F."Effects of the use of a wavy cap on the tip of the colonoscope on the training performance of novice endoscopists for colonoscopy". World Academy of Sciences Journal 3, no. 1 (2021): 8. https://doi.org/10.3892/wasj.2020.79
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