Does colonoscopy require fasting?

Colonoscopy usually requires fasting. colonoscopy

is to observe whether there are lesions in the colon through colonoscopy. If there are lesions, you should also check the specific location, size, shape, etc. of the lesion. If necessary, take a specimen for pathological examination. If there is no fasting before the examination, there will be a large amount of food residue in the colon, which will affect the examination effect of colonoscopy. At the same time, it will cause irritation to the colon during the examination, causing vomiting, diarrhea, abdominal pain and other discomfort symptoms. Therefore, you should keep fasting before colonoscopy.

Avoid eating coarse fiber food or rough and hard food three days before colonoscopy to prevent incomplete digestion and affect the colonoscopy effect.