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Usefulness of oblique transparent cylinders in facilitating colonoscopy
Author(s) -
TSUMURA TAKEHIKO,
TORII AYAO,
FUJITA SHINYA,
TAKEDA JUN,
HIKITA HIROSHI,
NISHIKAWA HARUHIRO,
OCHI JIRO,
MIURA KENSUKE
Publication year - 2003
Publication title -
digestive endoscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.5
H-Index - 56
eISSN - 1443-1661
pISSN - 0915-5635
DOI - 10.1046/j.1443-1661.2003.00229.x
Subject(s) - medicine , colonoscopy , cylinder , cecum , endoscope , oblique case , surgery , colorectal cancer , mathematics , geometry , linguistics , philosophy , cancer
Recently, the usefulness of the oblique transparent cylinder (OTC) in colonoscopy has been reported. In this study, the efficacy of two newly designed OTCs was evaluated. Colonoscopy performed by six experienced endoscopists in 1005 cases and by one inexperienced endoscopist in 177 cases was analyzed. Short (S) and ultra short (US) cylinders, shorter in length than a conventional long (L) cylinder, were used. The use of OTCs in colonoscopy contributed to a significantly faster insertion into the cecum. The average time to reach the cecum for experienced endoscopists were 12.4 ± 0.3 min without a cylinder, 9.0 ± 0.3 min with a US cylinder, 8.5 ± 0.4 min with an S cylinder and 6.9 ± 0.8 min with an L cylinder, respectively. The visual field and handling of the endoscope were more improved with the S cylinder than the conventional L cylinder. On the other hand, with the L cylinder, the success rate of one inexperienced endoscopist for total colonoscopy reached more than 90% and mean insertion time to reach the cecum was 16.4 ± 1.8 min 7‐months later. Both the success rate and average insertion time for the inexperienced endoscopist were satisfactory considering the rather short learning period. The OTCs were effective in reducing the insertion time. The use of the S cylinder overcame some of the disadvantages of the L cylinder; however, the L cylinder was helpful in improving the technique of an inexperienced endoscopist.