Bowel examination methods mainly include colonoscopy, small bowel examination and capsule endoscopy, etc. These bowel examination methods generally require fasting.
1. Colonoscopy: colonoscopy generally requires fasting time of 6 ~ 8 hours or more, the day before the examination, you need to follow the doctor’s instructions need to take oral laxatives for intestinal cleansing, excretion preparation.
2. Small bowel examination: because the small intestine is located in the middle of the digestive tract, it is the blind spot of gastroscopy and colonoscopy, therefore, if you consider the lesions in the small intestine, you need to carry out the examination of small bowel. Again, fasting and oral laxatives are required to prepare the bowel.
3. Capsule endoscopy: Capsule endoscopy is to make the endoscope into a capsule-like shape, let the examinee enter the digestive tract orally, and take pictures of the digestive tract several times for the doctor to observe and analyze. Fasting is required during the examination, but there is a certain leakage rate, which needs to be chosen according to the situation.
The patient should fast before the examination under the instruction of the doctor to avoid affecting the results of the examination.