• Dig Endosc · Jan 2015

    Randomized Controlled Trial

    Evaluation of discomfort during colonoscopy with conventional and ultrathin colonoscopes in ulcerative colitis patients.

    • Tomohiro Ogawa, Yoshio Ohda, Kazuko Nagase, Tomoaki Kono, Katsuyuki Tozawa, Toshihiko Tomita, Masaki Iimuro, Nobuyuki Hida, Tadayuki Oshima, Hirokazu Fukui, Kazutoshi Hori, Jiro Watari, Shiro Nakamura, and Hiroto Miwa.
    • Division of Gastroenterology, Department of Internal Medicine, Hyogo College of Medicine, Hyogo, Japan.
    • Dig Endosc. 2015 Jan 1; 27 (1): 99-105.

    Background And AimIn patients with ulcerative colitis (UC), colonoscopy is an essential procedure for evaluating mucosal damage, and treatment outcomes. A new flexible ultrathin colonoscope (PCF-PQ260) has been developed to readily pass through tortuous and narrow lesions of the colon and cause minimum patient discomfort. The objective of the present study was to evaluate the comfort and performance of this new type of scope in UC patients who underwent colonoscopy for estimation of mucosal inflammation, basically without sedation.MethodsIn a prospective, single-center setting, among 107 UC patients who were to undergo colonoscopy, 84 eligible cases were randomly assigned to the new ultrathin flexible colonoscope, PCF-PQ260 (n = 42) or to a conventional colonoscope, PCF-Q260A (n = 42). Main outcome measure was patient pain level determined by visual analogue scale (VAS) with 0 = none, and 100 = extremely painful. Other outcomes were cecal intubation time, rate of complete intubation (to reach the cecum) and rate of procedural complications.ResultsVAS score was significantly lower in the new-scope group as compared with the conventional-scope group: mean ± SD, median (range): 19.3 ± 16.9, 14 (0-62) vs 32.0 ± 21.6, 31.8 (0-100, P = 0.005). However, cecal intubation rate (97.6%) and time (4 min) were similar in the two groups. There was no procedure-related serious complication in either group.ConclusionThe findings indicated that the flexible ultrathin colonoscope PCF-PQ260 has significantly better tolerability in UC patients compared to a conventional colonoscope.© 2014 The Authors. Digestive Endoscopy © 2014 Japan Gastroenterological Endoscopy Society.

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