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Impact of instrument channel diameter on therapeutic endoscopic retrograde cholangiography using balloon‐assisted enteroscopy
Author(s) -
Kawashima Hiroki,
Nakamura Masanao,
Ohno Eizaburo,
Goto Hidemi,
Hirooka Yoshiki
Publication year - 2014
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 - 10.1111/den.12262
Subject(s) - medicine , balloon , ureteroscope , enteroscopy , nuclear medicine , port (circuit theory) , double balloon enteroscopy , radiology , endoscopy , surgery , electrical engineering , engineering
Background and Aim In therapeutic endoscopic retrograde cholangiography ( ERC ) using a balloon‐assisted enteroscope, each instrument insertion requires a long time, which prolongs the duration of the procedure. We conducted a retrospective single‐center study to compare instrument insertability of a double‐balloon enteroscope ( DBE ) with a 2.8‐mm instrument channel diameter and a prototype short single‐balloon enteroscope ( SBE ) with a 3.2‐mm instrument channel diameter. Methods We used a stop‐watch to measure instrument insertion time from the instrument channel port to the tip of the enteroscope when balloon‐assisted ERC was done. The instruments were divided into two groups (outer diameter larger or smaller than 2 mm). Lengths from the instrument channel port to the tip of the DBE ( EI ‐530 B ; FUJIFILM , T okyo, J apan) and the prototype SBE ( SIF ‐ Y 0004‐ V 01; O lympus M edical S ystems, T okyo, J apan) were identical (1680 mm). ERC using DBE was carried out in four cases, as was ERC using SBE . Results There was a significant time difference ( P = 0.001) when using instruments whose outer diameters were >2 mm (53.5 ± 19.0 s in DBE vs 28.4 ± 8.4 s in SBE ). Conclusion The prototype SBE with a 3.2‐mm channel demonstrated not only that many types of instrument can be used, but also that the time required to insert instruments may be shorter than that with DBE with a 2.8‐mm channel.