Conclusion: These data support the safety of split-dose bowel preparation for outpatients undergoing colonoscopy.

结论：这些数据支持分剂量肠道准备对于接受结肠镜检查的门诊病人是安全的。

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Within the split-dose preparation group, there was no association between the interval from last actual fluid ingestion and procedure start time and the residual gastric volume.

在分剂量肠道准备组，最后实际的液体摄入与操作起始时间和残余胃容量无关联。

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Patients: This study involved 712 patients, including 254 in the split-dose bowel preparation group, 411 in the EGD-only group, and 47 in the evening-before-procedure bowel preparation group.

病人：研究纳入了712例病人，包括254例分剂量肠道准备的病人，411例只进行EGD，47例进行了操作前整晚肠道准备组。

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