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• W2023341448 abstract "A magnetic imaging system of colonoscope (Unit of Position Detection: UPD, Olympus Optical Co., Ltd.) provides a new facility for viewing of the position of the colonoscope during examination, without exposing patients or medical staff to radiation. The aim of this prospective study was to compare UPD system with routine colonoscopy. This study examines whether UPD system improves insertion time to the cecum and patient discomfort. Methods: From Jan. 2004 to Nov. 2004, consecutive 2021 patients undergoing colonoscopy were randomly assigned to receive colonoscopy with either UPD colonoscope or ordinary colonoscope. Patients with colon stenosis or bleeding were excluded from the study. Patients who received sedation were also excluded. Three experienced endoscopists (experienced more than 1000 colonoscopies), and two less experienced endoscopists (experienced 200-1000) performed colonopy in this study. Parameters used in this study were the insertion time to the cecum, visual analog scale of patients discomfort (the patients marked on the linear scale grading the discomfort experienced during colonoscopy (0 cm, no pain; 10 cm, worst pain of life), using rate of abdominal counter pressure by medical staffs. Results: 1. A total of 1897 patients were enrolled in the study. 1587 patients were assigned to be in the UPD group and 310 in the ordinary colonoscope group. 2. There was a trend toward shorter insertion time in UPD group than that in ordinary colonoscopy group (mean ± SD: 512 ± 332 sec. vs. 633 ± 452 sec.), which is not statistically significant. In the cases of insertion time of less than 15 minutes, there was no difference in insertion time(360 ± 188 vs. 348 ± 158), while there was a greater trend toward shorter insertion time in UPD group (1218 ± 688 vs. 1689 ± 899). 3. There was a trend toward less pain in UPD group than ordinary colonoscope group 2.24 ± 1.12 vs. 2.58 ± 1.51). This trend is greater when the subject is limited to the cases of insertion time of longer than 15 minutes (3.55 ± 1.33 vs. 4.22 ± 2.11). 3. Using rate of abdominal counter pressure was 12.5% in UPD group and 8.4% in ordinary colonoscope group. Conclusion: These results indicated that UPD system is more useful in comparatively difficult cases. It seems easier for the medical staffs to perform abdominal counter pressure in UPD group." @default.
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• W2023341448 date "2005-04-01" @default.
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• W2023341448 title "Colonoscope Position Detecting System's Impact on Patient-Based Comfort and Efficiency of Colonoscopy" @default.
• W2023341448 doi "https://doi.org/10.1016/s0016-5107(05)01388-x" @default.
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