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KMID : 0914820160160030167
Journal of the Korean Gastric Cancer Association
2016 Volume.16 No. 3 p.167 ~ p.176
Effect of Previous Gastrectomy on the Performance of Postoperative Colonoscopy
Kim Sung-Hwan

Choi Jeong-Min
Kim Tae-Han
Kong Seong-Ho
Suh Yun-Suhk
Im Jong-Pil
Lee Hyuk-Joon
Kim Sang-Gyun
Jeong Seung-Yong
Kim Joo-Sung
Yang Han-Kwang
Abstract
Purpose: The purpose of this study was to determine the effect of a prior gastrectomy on the difficulty of subsequent colonoscopy, and to identify the surgical factors related to difficult colonoscopies.

Materials and Methods: Patients with a prior gastrectomy who had undergone a colonoscopy between 2011 and 2014 (n=482) were matched (1:6) to patients with no history of gastrectomy (n=2,892). Cecal insertion time, intubation failure, and bowel clearance score were compared between the gastrectomy and control groups, as was a newly generated comprehensive parameter for a difficult/incomplete colonoscopy (cecal intubation failure, cecal insertion time >12.9 minutes, or very poor bowel preparation scale). Surgical factors including surgical approach, extent of gastrectomy, extent of lymph node dissection, and reconstruction type, were analyzed to identify risk factors for colonoscopy performance.

Results: A history of gastrectomy was associated with prolonged cecal insertion time (8.7¡¾6.4 vs. 9.7¡¾6.5 minutes; P=0.002), an increased intubation failure rate (0.1% vs. 1.9%; P<0.001), and a poor bowel preparation rate (24.7 vs. 29.0; P=0.047). Age and total gastrectomy (vs. partial gastrectomy) were found to be independent risk factors for increased insertion time, which slowly increased throughout the postoperative duration (0.35 min/yr). Total gastrectomy was the only independent risk factor for the comprehensive parameter of difficult/incomplete colonoscopy.

Conclusions: History of gastrectomy is related to difficult/incomplete colonoscopy performance, especially in cases of total gastrectomy. In any case, it may be that a pre-operative colonoscopy is desirable in selected patients scheduled for gastrectomy; however, it should be performed by an expert endoscopist each time.
KEYWORD
Colonoscopy, Risk factors, Gastrectomy, Postoperative period, Time
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