Main Outcome Measurements: Residual gastric volume.
主要结果评价：残余胃容量。
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。
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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