A Randomized Controlled Trial of Comparison on Time and Rate of Cecal and Termianl Ileal Intubation according to Adult-Colonoscope Length: Intermediate versus Long

Abstract

For a complete colonoscopic examination, a high intubation rate and a short intubation time have been demanded to colonoscopists, if possible. The aim of the present study was to compare these examination parameters, intubation time and rate, according to the length of colonoscope. A total of 507 healthy Korean subjects were randomly assigned into two groups: intermediate length adult-colonoscope (n=254) and long length adult-colonoscope (n=253). There were significant differences in cecal intubation time and in terminal ileal intubation rate according to the length of the colonoscope. Time-to-cecal intubation was shorter for the intermediate-scope group than for the long-scope group (234.2 ± 115.0 sec vs 280.7 ± 135.0 sec, P < 0.001). However, the success rate of terminal ileal intubation was higher in the long-scope group than in the intermediate-scope group (95.3% vs 84.3%, P < 0.001). There were no significant differences in other colonoscopic parameters between the two groups. The intermediate length adult-colonoscope decreased the time to reach the cecum, whereas the long-scope showed a success rate of terminal ileal intubation. These findings suggest that it is reasonable to prepare and use these two types of colonoscope appropriate to the needs of the patient and examination, instead of employing only one type of colonoscope.

Prospective comparison of an adult, an intermediate pediatric and a long pediatric colonoscope in the training process of gastrointestinal fellows to achieve high-quality practice in colonoscopy

“…To begin with, the terminal ileum intubation rate was higher with the long endoscopes, whether the AC or the pediatric one, compared to the intermediate length (LPC vs. IPC P=0.018; and AC vs. IPC P=0.05). This observation agrees with the results of Kim et al [ 21 ], where the long colonoscope also appeared to offer a higher success rate for terminal ileal intubation. Even when expert endoscopists attempt to prevent colonic loops, it is extremely rare to have no loop formation.…”

Impact of bowel preparation on caecal intubation time during colonoscopy

“…It is affected by many factors including age, sex, increased or decreased body mass index, waist circumference, history of abdominal or pelvic surgery, experience of endoscopist, and the bowel preparation 1-3. It is also affected by length of colonoscope and advance features present in colonoscope such as variable stiffness 4. Although other factors are measurable and obtained from history, but bowel preparation is measured by different scales including American Society for Gastrointestinal Endoscopy (ASGE) and American Gastroenterological Association (AGA) Task Force who used the terms as “excellent, good, fair and poor”.…”

“…[1][2][3] It is also affected by length of colonoscope and advance features present in colonoscope such as variable stiffness. 4 Although other factors are measurable and obtained from history, but bowel preparation is measured by different scales including American Society for Gastrointestinal Endoscopy (ASGE) and American Gastroenterological Association (AGA) Task Force who used the terms as "excellent, good, fair and 1.…”

Association Between Exposure to Environmental Tobacco Smoke at the Workplace and Risk for Developing a Colorectal Adenoma: A Cross-Sectional Study

“…Colorectal neoplasms have become a worldwide concern [ 1 ]. Colorectal cancer (CRC) is one of the most common malignancies in the developed world, such as North America [ 2 ] and Europe [ 3 ], and the incidence of CRC appears to be increasing in East Asian countries, including Korea [ 4 5 ]. Colorectal polyps, especially the adenomatous type, are reputed to be precancerous lesions that might develop into CRC, i.e., an adenoma-carcinoma sequence [ 6 7 8 ].…”