If the laxatives are finished before the colonoscopy and there is still residue in the stool, laxatives such as polyethylene glycol or enemas can be used as remedies, and the specifics of the case should be consulted and carried out under the guidance of a doctor.
If there is still residue in the stool after taking laxatives for colonoscopy, it may be due to the fact that the day before the colonoscopy, the patient has eaten fiber-rich or indigestible food, resulting in improper diet and unclean bowel movement, and it may also be due to the fact that the laxatives are not taken in a standardized manner or the patient vomits, which results in the failure of laxatives to work completely.
Therefore, in these cases, the patient can promote defecation by walking back and forth, gently tenderizing the abdomen and continuing to take laxatives such as polyethylene glycol, so that the intestines can be completely emptied. If laxatives are ineffective, complete evacuation of the bowel may be carried out by means of enemas. Medications should be used under medical supervision.