"Passive-bending colonoscope" significantly improves cecal intubation in difficult cases

Takeshi Mizukami, Haruhiko Ogata, Toshihumi Hibi

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Colonoscopy sometimes causes pain during insertion, especially in difficult cases. Over-insufflation of air causes elongation or acute angulations of the colon, making passage of the scope difficult and causing pain. We previously reported a sedative-risk-free colonoscopy insertion technique, namely, "Water Navigation Colonoscopy". Complete air suction after water infusion not only improves the vision, but also makes water flow down to the descending colon, while the sigmoid colon collapses and shortens. While non-sedative colonoscopy can be carried out without pain in most cases, some patients do complain of pain. Most of these patients have abnormal colon morphology, and the pain is caused while negotiating the "hairpin" bends of the colon. The "hairpin" bends of the colon should be negotiated by gently pushing the full-angled colonoscope. The proximal 10-20 cm from the angulated part of the conventional colonoscope is stiff, with a wide turning radius, therefore, a conventional colonoscope cannot be negotiated through the "hairpin" bends of the colon without stretching them and causing pain. The "passive-bending colonoscope" has a flexible tip with a narrow turning radius, so that the scope can be negotiated through the "hairpin" bends of the colon with a minimum turning radius and minimal discomfort. Therefore, the intubation and pain-reducing performance of the "passive-bending colonoscope" was assessed in difficult cases.

Original languageEnglish
Pages (from-to)4454-4456
Number of pages3
JournalWorld Journal of Gastroenterology
Volume18
Issue number32
DOIs
Publication statusPublished - 2012

Fingerprint

Colonoscopes
Intubation
Colon
Pain
Colonoscopy
Water
Air
Descending Colon
Insufflation
Negotiating
Suction
Sigmoid Colon
Hypnotics and Sedatives

Keywords

  • Cecal intubation
  • Computed tomographic colonography
  • Passive-bending colonoscope
  • Water navigation colonoscopy

ASJC Scopus subject areas

  • Gastroenterology

Cite this

"Passive-bending colonoscope" significantly improves cecal intubation in difficult cases. / Mizukami, Takeshi; Ogata, Haruhiko; Hibi, Toshihumi.

In: World Journal of Gastroenterology, Vol. 18, No. 32, 2012, p. 4454-4456.

Research output: Contribution to journalArticle

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