结肠镜检查是否成功取决于肠管准备是否充分。以往通过进低纤维饮食、服泻药及灌肠作肠管准备。尽管95％病人可达到要求,但准备时间需要48小时,而且大多数受检者为门诊病人,必须给予认真合作。由于限制饮食和腹泻的痛苦,病人常不愿接受检查。自从开展全肠灌洗以后,事先不必限食,在检查前4～6小时开始准备即可,因此是一种很有吸引力的方法。最常用的灌洗液为0.9％盐水。此种液体苦成难饮,又可引起水、盐贮留。近来亦较多采用5～10％不易吸收的单糖甘露醇。不过,据本组随意观察,此法有丢失体液的副作用。本组今将此两种液体在全肠 The success of colonoscopy depends on whether bowel preparation is adequate. In the past through into the low-fiber diet, serving laxatives and enemas for intestinal preparation. Although 95% of patients can meet the requirements, it takes 48 hours to prepare and most of the subjects are outpatients, and serious cooperation must be given. Patients are often reluctant to undergo screening because of the pain of diet and diarrhea. Since the implementation of total bowel irrigation, there is no need to limit the food in advance, 4 to 6 hours before the test can be started, so it is an attractive method. The most common lavage solution is 0.9% saline. Bitter into such a hard drink, but also cause water, salt storage. More recently, 5 ~ 10% is not easy to absorb monosaccharide mannitol. However, this group is free to observe that this method has the potential to lose body fluids. This group will now these two liquids in the whole intestine