The Effects of Prior Esophagogastroduodenoscopy on Cecal Insertion in Same-Visit Bidirectional Endoscopy: A Pilot Study

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  • 上下部消化管内視鏡検査における下部消化管内視鏡の挿入性の検討

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OBJECTIVES: Same-day bidirectional endoscopy (BDE) has become a commonly used. Several studies have identified that the optimal sequence of a same-day BDE was esophagogastroduodenoscopy (EGD) followed by colonoscopy (CS). However, in recent years there are no reports from Japanese facilities regarding the difficulty of colonoscopy insertion along with a same-day BDE. In this study, we sought to clarify CS difficulties if EGD was performed first followed by CS on the same-day. METHODS: This study was a single-center retrospective study, and included 61 patients who underwent EGD followed by CS (E-C group) and 120 patients who underwent CS only (CS only group). We defined a “difficult CS case” as one that required ≥650 s for colonoscope insertion. RESULTS: The numbers of difficult CS cases were not significantly different between the E-C and CS only groups (p = 0.131). Furthermore, no correlations existed between EGD examination times and colonoscope insertion times (Spearman = 0.096). In addition, for patients whose body mass index (BMI) was <18.5 and ≥25, the number of difficult CS cases was significantly lower in the E-C group than that in the CS only group (p = 0.038). CONCLUSIONS: No significant differences were seen between the number of difficult cases in the E-C and CS only groups. In patients with BMI of <18.5 or ≥25, fewer cases of CS difficutyl might be encountered if EGD is performed first.

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